2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2995
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2158
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Showing posts with label Circuit/System Testing. Show all posts
Showing posts with label Circuit/System Testing. Show all posts
Monday, December 21, 2020
Saturday, December 19, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2938
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2938
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2130
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2130
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Thursday, December 3, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2563
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2563
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness electrical connector, and the Q8 control solenoid valve assembly
electrical connector.
5. Ignition ON, verify with a scan tool the following test status parameters display OK:
* Pressure Control Solenoid Valve 4 Performance Test Status
* Pressure Control Solenoid Valve 4 Control Circuit High Voltage Test Status
* Pressure Control Solenoid Valve 4 Control Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Replace the control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and
Relearning) for replacement, setup, and programming.
P2723
DTC P2723 or P2724
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2723
- Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724
- Clutch Pressure Control (PC) Solenoid 5 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 5
regulates transmission fluid pressure to the 1-2-3-4 clutch regulator valve which controls pressure to the 1-2-3-4 clutch. The TCM calculates gear
ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected
transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2723
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input shaft speed is greater than 60 RPM.
* 1-2-3-4 clutch is commanded ON.
P2724
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input speed is equal to or greater than 200 RPM.
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness electrical connector, and the Q8 control solenoid valve assembly
electrical connector.
5. Ignition ON, verify with a scan tool the following test status parameters display OK:
* Pressure Control Solenoid Valve 4 Performance Test Status
* Pressure Control Solenoid Valve 4 Control Circuit High Voltage Test Status
* Pressure Control Solenoid Valve 4 Control Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Replace the control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and
Relearning) for replacement, setup, and programming.
P2723
DTC P2723 or P2724
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2723
- Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724
- Clutch Pressure Control (PC) Solenoid 5 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 5
regulates transmission fluid pressure to the 1-2-3-4 clutch regulator valve which controls pressure to the 1-2-3-4 clutch. The TCM calculates gear
ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected
transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2723
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input shaft speed is greater than 60 RPM.
* 1-2-3-4 clutch is commanded ON.
P2724
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input speed is equal to or greater than 200 RPM.
Thursday, November 26, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2385
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2385
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness electrical connector, and the Q8 control solenoid valve assembly
electrical connector.
5. Ignition ON, verify with a scan tool the following test status parameters display OK:
* Pressure Control Solenoid Valve 3 Performance Test Status
* Pressure Control Solenoid Valve 3 Control Circuit High Voltage Test Status
* Pressure Control Solenoid Valve 3 Control Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Replace the Q8, K71 control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and
Relearning) for replacement, setup, and programming.
6L50/6L80/6L90 - Automatic Transmission
DTC P0969-P0971
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0969
- Clutch Pressure Control (PC) Solenoid 3 System Performance
DTC P0970
- Clutch Pressure Control (PC) Solenoid 3 Control Circuit Low Voltage
DTC P0971
- Clutch Pressure Control (PC) Solenoid 3 Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness electrical connector, and the Q8 control solenoid valve assembly
electrical connector.
5. Ignition ON, verify with a scan tool the following test status parameters display OK:
* Pressure Control Solenoid Valve 3 Performance Test Status
* Pressure Control Solenoid Valve 3 Control Circuit High Voltage Test Status
* Pressure Control Solenoid Valve 3 Control Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Replace the Q8, K71 control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and
Relearning) for replacement, setup, and programming.
6L50/6L80/6L90 - Automatic Transmission
DTC P0969-P0971
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0969
- Clutch Pressure Control (PC) Solenoid 3 System Performance
DTC P0970
- Clutch Pressure Control (PC) Solenoid 3 Control Circuit Low Voltage
DTC P0971
- Clutch Pressure Control (PC) Solenoid 3 Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Saturday, November 21, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2266
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2266
Circuit/System Testing
1. Ignition ON, test for 8.3-9.3 V between the automatic transmission output shaft speed sensor ignition circuit terminal A and ground.
瀚慖f less than the specified range, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the control solenoid valve assembly.
瀚慖f greater than the specified range, test the ignition circuit for a short to voltage. If the circuit tests normal, replace the control solenoid
valve assembly.
2. Ignition Off, connect the red lead of J 38522 to the signal circuit terminal B and the black lead to the ignition circuit terminal A.
3. Adjust the J 38522 to 8 V, the Frequency to 120 Hz and the Percent Duty Cycle to 50 percent.
4. Ignition ON, verify the scan tool Transmission OSS parameter is between 100-400 RPM.
瀚慖f not within the specified range, test the signal circuit for a short to voltage short to ground open/high resistance. If the circuit tests
normal, replace the control solenoid valve assembly.
5. If all circuits test normal, test or replace the B14A Automatic Transmission Output Shaft Speed Sensor.
Component Testing
Perform the Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test (See: Transmission and
Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/2ML70 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test).
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Output Speed Sensor Replacement (See: Powertrain Management/Transmission Control Systems/Sensors and Switches - Transmission and
Drivetrain/Sensors and Switches - A/T/Transmission Speed Sensor/Service and Repair/2ML70 - Automatic Transmission) for B14A
Automatic Transmission Output Shaft Speed Sensor replacement
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Q8 control solenoid valve assembly
replacement, setup, and programming
6L50/6L80/6L90 - Automatic Transmission
DTC P0722 or P0723
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0722
- Output Speed Sensor (OSS) Circuit Low Voltage
DTC P0723
- Output Speed Sensor (OSS) Intermittent
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Testing
1. Ignition ON, test for 8.3-9.3 V between the automatic transmission output shaft speed sensor ignition circuit terminal A and ground.
瀚慖f less than the specified range, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the control solenoid valve assembly.
瀚慖f greater than the specified range, test the ignition circuit for a short to voltage. If the circuit tests normal, replace the control solenoid
valve assembly.
2. Ignition Off, connect the red lead of J 38522 to the signal circuit terminal B and the black lead to the ignition circuit terminal A.
3. Adjust the J 38522 to 8 V, the Frequency to 120 Hz and the Percent Duty Cycle to 50 percent.
4. Ignition ON, verify the scan tool Transmission OSS parameter is between 100-400 RPM.
瀚慖f not within the specified range, test the signal circuit for a short to voltage short to ground open/high resistance. If the circuit tests
normal, replace the control solenoid valve assembly.
5. If all circuits test normal, test or replace the B14A Automatic Transmission Output Shaft Speed Sensor.
Component Testing
Perform the Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test (See: Transmission and
Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/2ML70 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test).
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Output Speed Sensor Replacement (See: Powertrain Management/Transmission Control Systems/Sensors and Switches - Transmission and
Drivetrain/Sensors and Switches - A/T/Transmission Speed Sensor/Service and Repair/2ML70 - Automatic Transmission) for B14A
Automatic Transmission Output Shaft Speed Sensor replacement
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Q8 control solenoid valve assembly
replacement, setup, and programming
6L50/6L80/6L90 - Automatic Transmission
DTC P0722 or P0723
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0722
- Output Speed Sensor (OSS) Circuit Low Voltage
DTC P0723
- Output Speed Sensor (OSS) Intermittent
Diagnostic Fault Information
Typical Scan Tool Data
Monday, November 16, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2144
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2144
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
2. Ignition ON, test for B+ between the B+ circuit terminal B and ground.
瀚慖f less than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the BPP Circuit Signal data parameter displays released.
瀚慖f not the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
4. Connect a 3A fused jumper between the B+ circuit terminal B and the signal circuit terminal A. Verify the BPP Circuit Signal data parameter
displays applied.
瀚慖f not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
ECM.
5. If all circuits test normal, test or replace the stop lamp switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
2. With the brake pedal released, test for infinite resistance between terminal A and terminal B at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
3. With the brake pedal released, test for less than 1.0 ohm between terminal C and terminal D at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
4. With the brake pedal applied, test for less than 1.0 ohm between terminal A and terminal B at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
5. With the brake pedal applied, test for infinite resistance between terminal C and terminal D at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Stop Lamp Switch Replacement (With Adjustable Pedals) (See: Lighting and Horns/Brake Light Switch/Service and Repair/Stop Lamp
Switch Replacement (With Adjustable Pedals))Stop Lamp Switch Replacement (Without Adjustable Pedals) (See: Lighting and
Horns/Brake Light Switch/Service and Repair/Stop Lamp Switch Replacement (Without Adjustable Pedals))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P0575
DTC P0575
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0575
- Cruise Control Switch Signal Circuit
Circuit/System Description
When a cruise control function switch is activated, the body control module (BCM) detects a predetermined voltage signal. The BCM sends a serial
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
2. Ignition ON, test for B+ between the B+ circuit terminal B and ground.
瀚慖f less than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the BPP Circuit Signal data parameter displays released.
瀚慖f not the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
4. Connect a 3A fused jumper between the B+ circuit terminal B and the signal circuit terminal A. Verify the BPP Circuit Signal data parameter
displays applied.
瀚慖f not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
ECM.
5. If all circuits test normal, test or replace the stop lamp switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
2. With the brake pedal released, test for infinite resistance between terminal A and terminal B at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
3. With the brake pedal released, test for less than 1.0 ohm between terminal C and terminal D at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
4. With the brake pedal applied, test for less than 1.0 ohm between terminal A and terminal B at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
5. With the brake pedal applied, test for infinite resistance between terminal C and terminal D at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Stop Lamp Switch Replacement (With Adjustable Pedals) (See: Lighting and Horns/Brake Light Switch/Service and Repair/Stop Lamp
Switch Replacement (With Adjustable Pedals))Stop Lamp Switch Replacement (Without Adjustable Pedals) (See: Lighting and
Horns/Brake Light Switch/Service and Repair/Stop Lamp Switch Replacement (Without Adjustable Pedals))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P0575
DTC P0575
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0575
- Cruise Control Switch Signal Circuit
Circuit/System Description
When a cruise control function switch is activated, the body control module (BCM) detects a predetermined voltage signal. The BCM sends a serial
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2107
Circuit/System Testing
Verify none of the following conditions exist:
P0506
* Excess deposits in the Q38 throttle body. Refer to Throttle Body Cleaning (See: Powertrain Management/Fuel Delivery and Air
Induction/Throttle Body/Service and Repair/Procedures)
* Restricted exhaust
* Mechanical conditions that limits engine speed
* Parasitic load on the engine-For example, a transmission condition, a belt driven accessory condition.
瀚慖f a condition is found, repair as necessary.
P0507
* Vacuum leaks
* A throttle valve that does not close correctly
* Verify the correct operation of the crankcase ventilation system. Inspect for the following conditions:
- The routing of the positive crankcase ventilation (PCV) system
- Vacuum leaks in the PCV system-Refer to Crankcase Ventilation System Inspection/Diagnosis (See: Powertrain Management/Emission
Control Systems/Positive Crankcase Ventilation/Testing and Inspection)
瀚慖f a condition is found, repair as necessary.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
P0513
DTC P0513
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0513
- Theft Deterrent Key Incorrect
Circuit/System Description
The theft deterrent module (TDM) sends the prerelease password to the engine control module (ECM) via the serial data circuit. The ECM then
sends a challenge to the TDM. Both the ECM and TDM perform a calculation on this challenge. If the calculated response from the TDM equals
the calculation performed by the ECM, the ECM will allow vehicle starting.
Conditions for Running the DTC
Ignition is in the ACCESSORY or RUN position.
Conditions for Setting the DTC
The calculated response from the TDM does not equal the calculation performed by the ECM.
Action Taken When the DTC Sets
* The security indicator will illuminate.
* Vehicle starting will be disabled.
Conditions for Clearing the DTC
* A current DTC P0513 will be cleared when a valid calculation is received.
Circuit/System Testing
Verify none of the following conditions exist:
P0506
* Excess deposits in the Q38 throttle body. Refer to Throttle Body Cleaning (See: Powertrain Management/Fuel Delivery and Air
Induction/Throttle Body/Service and Repair/Procedures)
* Restricted exhaust
* Mechanical conditions that limits engine speed
* Parasitic load on the engine-For example, a transmission condition, a belt driven accessory condition.
瀚慖f a condition is found, repair as necessary.
P0507
* Vacuum leaks
* A throttle valve that does not close correctly
* Verify the correct operation of the crankcase ventilation system. Inspect for the following conditions:
- The routing of the positive crankcase ventilation (PCV) system
- Vacuum leaks in the PCV system-Refer to Crankcase Ventilation System Inspection/Diagnosis (See: Powertrain Management/Emission
Control Systems/Positive Crankcase Ventilation/Testing and Inspection)
瀚慖f a condition is found, repair as necessary.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
P0513
DTC P0513
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0513
- Theft Deterrent Key Incorrect
Circuit/System Description
The theft deterrent module (TDM) sends the prerelease password to the engine control module (ECM) via the serial data circuit. The ECM then
sends a challenge to the TDM. Both the ECM and TDM perform a calculation on this challenge. If the calculated response from the TDM equals
the calculation performed by the ECM, the ECM will allow vehicle starting.
Conditions for Running the DTC
Ignition is in the ACCESSORY or RUN position.
Conditions for Setting the DTC
The calculated response from the TDM does not equal the calculation performed by the ECM.
Action Taken When the DTC Sets
* The security indicator will illuminate.
* Vehicle starting will be disabled.
Conditions for Clearing the DTC
* A current DTC P0513 will be cleared when a valid calculation is received.
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2103
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2103
Circuit/System Testing
1. Ignition ON, engine OFF.
2. Seal the EVAP system using the Purge/Seal function with a scan tool.
3. Start the engine.
4. Observe the FTP sensor with a scan tool. The Fuel Tank Pressure Sensor parameter should be less than 1.7 volts after 90 seconds.
瀚慖f the Fuel Tank Pressure Sensor parameter is greater than the specified range, replace the EVAP canister purge solenoid valve.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Evaporative Emission Canister Purge Solenoid Valve Replacement (See: Powertrain Management/Emission Control Systems/Evaporative
Emissions System/Canister Purge Solenoid/Service and Repair)
P0506
DTC P0506 or P0507
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC P0506
- Idle Speed Low
DTC P0507
- Idle Speed High
Circuit/System Description
The throttle actuator control (TAC) motor is controlled by the engine control module (ECM). The DC motor located in the throttle body drives the
throttle blade. In order to decrease idle speed, along with spark and fuel delivery changes the ECM commands the throttle closed reducing air flow
into the engine and the idle speed decreases. In order to increase idle speed, the ECM commands the throttle plate open allowing more air to pass
the throttle plate.
Conditions for Running the DTC
* DTCs P0068, P0101, P0102, P0103, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0171, P0172, P0174,
P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0221, P0222, P0223, P0300-P0308, P0351-P0358, P0461-
P0463, P0496, P0502, P0503, P0606, P0722, P0723, P0806-P0808, P1516, P2066-P2068, P2101, P2135, P2227-P2230 are not set.
* The engine is operating for at least 60 s.
* The engine is idling for greater than 10 s.
* The barometric pressure (BARO) is greater than 70 kPa (11 psi).
* The engine coolant temperature (ECT) is greater than 60掳C (140掳F).
* The intake air temperature (IAT) is warmer than -20掳C (-4掳F).
* The vehicle speed is less than 3 km/h (2 mph).
* The commanded engine speed is steady within 25 RPM.
* The transmission is not changing gears.
* The torque converter clutch (TCC) is not changing states.
* The manual transmission clutch pedal position is between 20-88 percent - If equipped.
* The manual transmission clutch is not depressed - If equipped.
* The power take-off (PTO) is not active - If equipped.
* The transfer case is not in 4WD Low - If equipped.
* A scan tool output control is not active.
* The system voltage is between11-18 V.
* DTC P0506 and P0507 run continuously when the above conditions are met for greater than 10 s.
Conditions for Setting the DTC
Circuit/System Testing
1. Ignition ON, engine OFF.
2. Seal the EVAP system using the Purge/Seal function with a scan tool.
3. Start the engine.
4. Observe the FTP sensor with a scan tool. The Fuel Tank Pressure Sensor parameter should be less than 1.7 volts after 90 seconds.
瀚慖f the Fuel Tank Pressure Sensor parameter is greater than the specified range, replace the EVAP canister purge solenoid valve.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Evaporative Emission Canister Purge Solenoid Valve Replacement (See: Powertrain Management/Emission Control Systems/Evaporative
Emissions System/Canister Purge Solenoid/Service and Repair)
P0506
DTC P0506 or P0507
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC P0506
- Idle Speed Low
DTC P0507
- Idle Speed High
Circuit/System Description
The throttle actuator control (TAC) motor is controlled by the engine control module (ECM). The DC motor located in the throttle body drives the
throttle blade. In order to decrease idle speed, along with spark and fuel delivery changes the ECM commands the throttle closed reducing air flow
into the engine and the idle speed decreases. In order to increase idle speed, the ECM commands the throttle plate open allowing more air to pass
the throttle plate.
Conditions for Running the DTC
* DTCs P0068, P0101, P0102, P0103, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0171, P0172, P0174,
P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0221, P0222, P0223, P0300-P0308, P0351-P0358, P0461-
P0463, P0496, P0502, P0503, P0606, P0722, P0723, P0806-P0808, P1516, P2066-P2068, P2101, P2135, P2227-P2230 are not set.
* The engine is operating for at least 60 s.
* The engine is idling for greater than 10 s.
* The barometric pressure (BARO) is greater than 70 kPa (11 psi).
* The engine coolant temperature (ECT) is greater than 60掳C (140掳F).
* The intake air temperature (IAT) is warmer than -20掳C (-4掳F).
* The vehicle speed is less than 3 km/h (2 mph).
* The commanded engine speed is steady within 25 RPM.
* The transmission is not changing gears.
* The torque converter clutch (TCC) is not changing states.
* The manual transmission clutch pedal position is between 20-88 percent - If equipped.
* The manual transmission clutch is not depressed - If equipped.
* The power take-off (PTO) is not active - If equipped.
* The transfer case is not in 4WD Low - If equipped.
* A scan tool output control is not active.
* The system voltage is between11-18 V.
* DTC P0506 and P0507 run continuously when the above conditions are met for greater than 10 s.
Conditions for Setting the DTC
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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1949
Circuit/System Testing
1. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component
Tests and General Diagnostics/6T70/6T75 - Automatic Transmission/Line Pressure Check). Verify the transmission line pressures are within
the ranges specified in the Line PC Solenoid Valve Pressure table. Refer to Solenoid Valve Pressure (See: Specifications/Mechanical
Specifications/Automatic Transmission/Transaxle/System Specifications/6T70/6T75 - Automatic Transmission/Solenoid Valve Pressure).
瀚慖f not within the specified ranges, refer to Fluid Pressure High or Low (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Symptom Related Diagnostic Procedures/6T70/6T75 - Automatic Transmission/Fluid
Pressure High or Low).
2. Ignition OFF, remove the control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (See: Transmission and
Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6T70/6T75 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test). A pressure change should
occur for each solenoid valve.
瀚慖f the control solenoid valve assembly does not pass the performance test, replace the control solenoid valve assembly.
4. Listed in the table below, are conditions for each component that could set DTC P2714 or P2715. Carefully inspect each component for that
condition. Repair or replace as necessary.
Repair Instructions
Important:
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See:
Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General
Diagnostics/6T70/6T75 - Automatic Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Control Valve Lower Body and Upper Body Replacement (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve
Body/Service and Repair/6T70/6T75 - Automatic Transmission/Control Valve Lower Body and Upper Body Replacement)
* Low and Reverse Clutch and 1-2-3-4 Clutch Plate Removal (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Service
and Repair/Overhaul/8. Low and Reverse Clutch and 1-2-3-4 Clutch Plate Removal)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement,
setup, and programming
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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1943
Circuit/System Testing
1. Verify that DTCs P018C, P018D, P0231, P0232, or P023F are not set.
瀚慖f the DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle).
2. Ignition OFF, disconnect the harness connector at the G12 fuel pump.
3. Ignition ON, test for less than 5.0 ohm between the G12 fuel pump low reference circuit terminal B and ground.
瀚慖f greater than the specified range, test the G12 fuel pump low reference circuit for a high resistance. If the circuit tests normal, replace
the K27 fuel pump control module.
4. Ignition OFF, install a test lamp between the control circuit terminal A and the low reference circuit terminal B.
5. Ignition ON, command the Fuel Pump Relay ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between
the commanded states.
瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel pump control
module.
瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K27 fuel pump control module.
6. Perform the Fuel System Diagnosis (LF1 China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and
Inspection/Fuel System Diagnosis (China))Fuel System Diagnosis (LF1 Except China) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China))Fuel System Diagnosis (LAU China) (See: Powertrain
Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (China))Fuel System Diagnosis
(LAU Except China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System
Diagnosis (Except China)) to verify proper fuel pressure.
瀚慖f the fuel pressure is not normal, replace the G12 fuel pump
7. If all circuits test normal, replace the K27 fuel pump control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Fuel Pump Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Service and Repair/Fuel Pump
Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning)for fuel pump control module replacement, setup,
and programming
P2714
DTC P2714 or P2715
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2714
- Clutch Pressure Control (PC) Solenoid 4 - Stuck Off
DTC P2715
- Clutch Pressure Control (PC) Solenoid 4 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 4 is part of the control solenoid valve assembly, which has no serviceable components. The PC solenoid
4 regulates transmission fluid pressure to the 2-6 clutch regulator valve which controls pressure to the 2-6 clutch. The transmission control module
(TCM) calculates gear ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares
the expected transmission gear ratio to the calculated gear ratio for each commanded gear.
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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1475
Circuit/System Testing
1. Ignition OFF, disconnect the KR27 starter relay.
2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 10 Ohms between the relay
ground circuit terminal 85 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 30 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
瀚慖f the circuit tests normal and the B+ circuit fuse is open, test the control circuit terminal 87 for a short to ground.
4. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 87 and ground.
瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.
5. Parking brake applied and the transmission is in NEUTRAL or PARK. Momentarily install a 30 A fused jumper wire between the B+ circuit
terminal 30 and the control circuit terminal 87. Verify the starter is activated.
瀚慖f the starter does not activate, test the control circuit for an open/high resistance. If the circuit tests normal, test or replace the starter.
6. Ignition OFF, connect a test lamp between the control circuit terminal 86 and the ground circuit terminal 85.
7. Transmission in park or neutral, cycle the ignition between the OFF and CRANK position. The test lamp should turn ON and OFF when
changing between the selected states.
瀚慖f the test lamp is always ON, test the control circuit for short to voltage. If the circuit tests normal, replace the K20 ECM.
瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K20 ECM.
8. If all circuits tests normal, replace the KR27 starter relay.
Component Testing
Relay Test
1. Ignition OFF, disconnect the starter relay.
2. Test for 60-180 Ohms between terminals 85 and 86.
瀚慖f not within the specified range, replace the relay.
3. Test for infinite resistance between the following terminals:
* 30 and 86
* 30 and 87
* 30 and 85
* 85 and 87
瀚慖f not the specified value, replace the relay.
4. Install a 20 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for
less than 2 Ohms between terminals 30 and 87.
瀚慖f greater than specified range, replace the relay.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay
Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power
Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P0617
DTC P0615, P0616, or P0617
Diagnostic Instructions
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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1692
Circuit/System Testing
Command the Line Pressure Control Solenoid Valve with a scan tool. The value should change from 0.0-1.1 A.
If the value does not change, turn ignition OFF, remove the K71 Transmission Control Module. Connect a test lamp between the low reference
circuit terminal 1 X2 at the K71 Transmission Control Module and the voltage supply component circuit terminal 3 X2 at the K71 Transmission
Control Module. Command the Line Pressure Control Solenoid Valve with a scan tool. The test lamp has to illuminate brighter with increasing
current.
If the test lamp always illuminate or always does not illuminate, replace the K71 Transmission Control Module.
Component Testing
Static Test
1. Ignition OFF, remove the K71 Transmission Control Module.
2. Test for 5-5.6 ohm at 20掳C (68掳F) between the low reference circuit terminal 1 X2 and the voltage supply circuit terminal 3 X2.
瀚慖f less than the specified range, test the wiring harness for internal short. If the circuit test normal, replace the Q23 Line Pressure Control
Solenoid Valve.
3. Test for infinite resistance between each terminal and the low reference circuit terminal 1 X2 and also to the voltage supply circuit terminal 3
X2.
瀚慖f less than the specified range, replace the wiring harness.
4. If all circuit test normal, perform the Control Solenoid Valve Inspection (M36 and MXE) (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/AF40-6 - Automatic Transmission).
瀚慖f the inspection test normal, replace the valve body assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Control valve body replacement-Refer to Control Valve Body Replacement (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Valve Body/Service and Repair/AF40-6 - Automatic Transmission/Control Valve Body Replacement) for
replacement, setup and programming.
* TCM-Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for replacement, setup and
programming.
* Perform the Transmission Adaptive Functions (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/AF40-6 - Automatic Transmission/Transmission Adaptive Functions).
* Wiring harness-Refer to Automatic Transmission Wiring Harness Replacement (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Wiring Harness/Service and Repair) for replacement.
6T70/6T75 - Automatic Transmission
DTC P0961-P0963
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0961
- Line Pressure Control (PC) Solenoid System Performance
DTC P0962
- Line Pressure Control (PC) Solenoid Control Circuit Low Voltage
DTC P0963
- Line Pressure Control (PC) Solenoid Control Circuit High Voltage
Diagnostic Fault Information
Thursday, March 5, 2020
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1079
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1079
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at Q38 throttle body.
2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm
between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests
normal, replace the K20 engine control module.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal E and ground.
瀚慖f less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20
engine control module.
瀚慖f greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the K20 engine control module.
4. Ignition ON, verify that the scan tool Throttle Position Sensor 1 Voltage parameter is less than 0.3 V.
瀚慖f greater than the specified value, test the signal circuit terminal D for a short to voltage. If the circuit tests normal, replace the K20
engine control module.
5. Connect a 3 A fused jumper wire between the 5 V reference circuit terminal E and the throttle position sensor 1 signal circuit terminal D.
Verify the scan tool Throttle Position Sensor 1 Voltage parameter is greater than 4.89 V.
瀚慖f less than the specified value, test the signal circuit for an open/high resistance or for a short to ground. If the circuit tests normal,
replace the K20 engine control module.
6. Verify the scan tool Throttle Position Sensor 2 Voltage parameter is greater than 4.97 V.
瀚慖f less than the specified value, test the signal circuit terminal F for a short to ground. If the circuit tests normal, replace the K20 engine
control module.
Note: If the fuse in the jumper wire opens, the signal circuit is shorted to a voltage.
7. Connect a 3 A fused jumper wire between the throttle position sensor 2 signal circuit terminal F and the low reference circuit terminal C.
Verify the scan tool Throttle Position Sensor 2 Voltage parameter is less than 0.10 V.
瀚慖f greater than the specified value, test the signal circuit for an open/high resistance or for a short to voltage. If the circuit tests normal,
replace the K20 engine control module.
8. If all circuits test normal, replace the Q38 throttle body assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and
Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air
Induction/Throttle Body/Service and Repair/Removal and Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement,
programming, and setup
P0122
DTC P0121-P0123 or P0221-P0223 (Without LF1, LFW)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0121
- Throttle Position Sensor 1 Performance
Monday, February 3, 2020
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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1113
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the B52 HO2S 2.
2. Ignition ON, verify that the scan tool HO2S 2 voltage parameter is between 350-500 mV.
瀚慖f less than the specified range, test the signal circuit terminal 4 for a short to ground. If the circuit/connections test normal, replace the
K20 ECM.
瀚慖f greater than the specified range, test the signal circuit terminal 4 for a short to voltage. If the circuit/connections test normal, replace the
K20 ECM.
3. Connect a 3 A fused jumper wire between the signal circuit terminal 4 and ground. Verify the scan tool HO2S voltage parameter is less than
60 mV.
瀚慖f greater than the specified range, test the signal circuit for an open/high resistance. If the circuit/connections test normal, replace the
K20 ECM.
4. Connect a 3 A fused jumper wire between the signal circuit terminal 4 and the low reference circuit terminal 3. Verify the scan tool HO2S 2
voltage parameter is less than 60 mV.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance or for a short to voltage. If the
circuit/connections test normal, replace the K20 ECM.
5. Verify that the following conditions do not exist:
* Lean, rich, or leaking fuel injectors-Refer to Fuel Injector Solenoid Coil Test (LAU) (See: Powertrain Management/Fuel Delivery and
Air Induction/Fuel Injector/Testing and Inspection/Fuel Injector Solenoid Coil Test)Fuel Injector Solenoid Coil Test (LF1, LFW) (See:
Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection/Fuel Injector Solenoid Coil Test).
* A fuel pressure that is too low or too high-Refer to Fuel System Diagnosis (LF1 China) (See: Powertrain Management/Fuel Delivery
and Air Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (China))Fuel System Diagnosis (LF1 Except China) (See:
Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China))Fuel
System Diagnosis (LAU China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel
System Diagnosis (China))Fuel System Diagnosis (LAU Except China) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China)).
* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (See: Powertrain Management/Fuel Delivery
and Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool))Alcohol/Contaminants-in-Fuel
Diagnosis (Without Special Tool) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component
Tests and General Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool)).
* Evidence of water intrusion into the electrical connector of the HO2S
* The HO2S is loose
* Exhaust leaks near the HO2S
* Engine vacuum leaks
瀚慖f you find any of the above conditions, repair as necessary.
6. If all circuits/connections test normal, replace the B52 HO2S 2 sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Heated Oxygen Sensor Replacement - Sensor 2 (LAU) (See: Powertrain Management/Computers and Control Systems/Oxygen
Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Sensor 2)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and
programming
P0141
DTC P0135 or P0141 (Without LF1)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1779
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1779
Circuit/System Testing
Command the Clutch Pressure Control Solenoid Valve 1 with a scan tool. The value should change from 0.0-1.0 A.
If the value does not change, turn ignition OFF, remove the K71 Transmission Control Module. Connect a test lamp between the low reference
circuit terminal 10 X2 at the K71 Transmission Control Module and the voltage supply component circuit terminal 11 X2 at the K71 Transmission
Control Module. Command the Clutch Pressure Control Solenoid Valve 1 with a scan tool. The test lamp has to illuminate brighter with increasing
current.
If the test lamp always illuminate or always does not illuminate, replace the K71 Transmission Control Module.
Component Testing
Dynamic Test
1. Perform the line pressure check. Refer to Line Pressure Check (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Symptom Related Diagnostic Procedures/AF40-6 - Automatic Transmission/Line Pressure
Check).
瀚慖f the line pressure check fails, replace the control valve body.
2. Verify the line pressure check does not fail.
瀚慖f the line pressure check fails, replace the replace the K71 Transmission Control Module.
3. Perform the Control Solenoid Valve Inspection (M36 and MXE) (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/AF40-6 - Automatic Transmission).
瀚慖f the inspection fails, replace the control valve body.
4. If all circuit test normal, replace the K71 Transmission Control Module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Control valve body replacement-Refer to Control Valve Body Replacement (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Valve Body/Service and Repair/AF40-6 - Automatic Transmission/Control Valve Body Replacement).
* TCM-Refer to Control Module References (See: Testing and Inspection/Programming and Relearning).
* Perform the Transmission Adaptive Functions (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/AF40-6 - Automatic Transmission/Transmission Adaptive Functions).
P1704
DTC P1702-P1704
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P1702
- Transmission Clutch 1 Stuck On
DTC P1703
- Transmission Clutch 1 Performance
DTC P1704
- Transmission Clutch 1 Slip Detected
Diagnostic Fault Information
Monday, December 16, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 93
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 93
Circuit/System Testing
Important: When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion to the following requires
repair or replacement of the affected component/connector:
* Driver steering wheel air bag
* SDM module
* Driver steering wheel air bag wiring harness connector
* SDM wiring harness connector
The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with
an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate
properly.
1. Verify that the driver steering wheel air bag connector and CPA are engaged.
瀚慖f the above condition is not found, make the appropriate repair.
2. Ignition OFF, disconnect the harness connector at the driver steering wheel air bag.
3. With the appropriate load tool adaptor, connect J 38715-A in place of the driver steering wheel air bag.
4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
瀚慖f the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A, reconnect the harness connector at the
driver steering wheel air bag, and cycle the ignition ON. If the DTC resets after reconnecting the air bag, then replace the driver steering
wheel air bag.
5. Ignition OFF, disconnect J 38715-A and the adaptor.
6. Disconnect the driver steering wheel air bag coil in-line connector.
7. With the appropriate load tool adaptor, connect special tool J 38715-A.
8. Ignition ON, with a scan tool, verify DTC is set as current.
瀚慖f DTC is not set or is set as history, replace the driver steering wheel air bag coil.
9. Ignition OFF, disconnect special tool J 38715-A and the adaptor.
10. Disconnect the harness connector at the SDM.
11. Ignition ON, test for less than 1 volt between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
12. Test for less than 1 volt between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
13. Ignition OFF, test for infinite resistance between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f less than the specified value, test the circuit for a short to ground.
14. Test for infinite resistance between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f less than the specified value, test the circuit for a short to ground.
15. Test for less then 1 ohm between the SDM connector and the air bag connector high circuit terminals listed below.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1 and SDM terminal 4 X1.
Circuit/System Testing
Important: When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion to the following requires
repair or replacement of the affected component/connector:
* Driver steering wheel air bag
* SDM module
* Driver steering wheel air bag wiring harness connector
* SDM wiring harness connector
The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with
an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate
properly.
1. Verify that the driver steering wheel air bag connector and CPA are engaged.
瀚慖f the above condition is not found, make the appropriate repair.
2. Ignition OFF, disconnect the harness connector at the driver steering wheel air bag.
3. With the appropriate load tool adaptor, connect J 38715-A in place of the driver steering wheel air bag.
4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
瀚慖f the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A, reconnect the harness connector at the
driver steering wheel air bag, and cycle the ignition ON. If the DTC resets after reconnecting the air bag, then replace the driver steering
wheel air bag.
5. Ignition OFF, disconnect J 38715-A and the adaptor.
6. Disconnect the driver steering wheel air bag coil in-line connector.
7. With the appropriate load tool adaptor, connect special tool J 38715-A.
8. Ignition ON, with a scan tool, verify DTC is set as current.
瀚慖f DTC is not set or is set as history, replace the driver steering wheel air bag coil.
9. Ignition OFF, disconnect special tool J 38715-A and the adaptor.
10. Disconnect the harness connector at the SDM.
11. Ignition ON, test for less than 1 volt between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
12. Test for less than 1 volt between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
13. Ignition OFF, test for infinite resistance between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f less than the specified value, test the circuit for a short to ground.
14. Test for infinite resistance between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f less than the specified value, test the circuit for a short to ground.
15. Test for less then 1 ohm between the SDM connector and the air bag connector high circuit terminals listed below.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1 and SDM terminal 4 X1.
Tuesday, December 10, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 782
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 782
Circuit/System Testing
1. Verify that no other DTCs are set.
瀚慖f DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble
Code (DTC) List - Vehicle).
2. Using a scan tool, perform the EBCM, module setup, and EBCM Relearn.
3. Verify that DTC C012D, C120A, C128A, C128D, C12BC, C12BD, or C12BE is not set.
瀚慖f DTC is set replace brake pressure modulator valve (BPMV) assembly. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C12B1
DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or C12F8
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0277 03
- BMC Primary Piston Position Sensor A and B Circuit Performance Voltage Below Threshold
DTC C129A
- Brake Pedal Position Sensor 3 Circuit Low
DTC C129D
- Brake Pedal Position Sensor 4 Circuit Low
DTC C0277 07
- BMC Primary Piston Position Sensor A and B Circuit Voltage Above Threshold
DTC C129B
- Brake Pedal Position Sensor 3 Circuit High
DTC C129E
- Brake Pedal Position Sensor 4 Circuit High
DTC C0277 5A
- BMC Primary Piston Position Sensor A and B Circuit Plausibility Failure
DTC C12B1
- ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor Not Plausible
DTC C12F8
- Brake Pedal Position Sensor 3 Not Plausible
DTC C120C
- Brake Pedal Position Sensor 4 Not Plausible
Diagnostic Fault Information
Circuit/System Testing
1. Verify that no other DTCs are set.
瀚慖f DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble
Code (DTC) List - Vehicle).
2. Using a scan tool, perform the EBCM, module setup, and EBCM Relearn.
3. Verify that DTC C012D, C120A, C128A, C128D, C12BC, C12BD, or C12BE is not set.
瀚慖f DTC is set replace brake pressure modulator valve (BPMV) assembly. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C12B1
DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or C12F8
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0277 03
- BMC Primary Piston Position Sensor A and B Circuit Performance Voltage Below Threshold
DTC C129A
- Brake Pedal Position Sensor 3 Circuit Low
DTC C129D
- Brake Pedal Position Sensor 4 Circuit Low
DTC C0277 07
- BMC Primary Piston Position Sensor A and B Circuit Voltage Above Threshold
DTC C129B
- Brake Pedal Position Sensor 3 Circuit High
DTC C129E
- Brake Pedal Position Sensor 4 Circuit High
DTC C0277 5A
- BMC Primary Piston Position Sensor A and B Circuit Plausibility Failure
DTC C12B1
- ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor Not Plausible
DTC C12F8
- Brake Pedal Position Sensor 3 Not Plausible
DTC C120C
- Brake Pedal Position Sensor 4 Not Plausible
Diagnostic Fault Information
Friday, December 6, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 713
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 713
Circuit/System Testing
1. Ignition OFF, disconnect the X2 harness connector at the left IP junction block.
2. Ignition ON, transmission in reverse, verify that a test lamp illuminates between the control circuit terminal E3 and ground.
瀚慖f the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the BCM.
3. If all circuits test normal, test or replace the left IP junction block.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Instrument Panel Electrical Center or Junction Block Replacement - Left Side (See: Maintenance/Fuses and Circuit Breakers/Fuse
Block/Service and Repair/Removal and Replacement/Instrument Panel Electrical Center or Junction Block Replacement - Left Side)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
B3715
DTC B3715
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC B3715 02
- Front Wiper Relay Drive Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) monitors the control circuit of the wiper relay. The voltage level should be low while the wiper relay is
de-energized and near system voltage when the relay is energized. After the BCM receives a low, intermittent, or mist signal from the wiper/washer
switch, it responds by applying battery voltage through the wiper relay control circuit to the coil side of the relay, energizing the WIPER Relay.
Ground is supplied at all times to the coil side of the WIPER relay.
Conditions for Running the DTC
Circuit/System Testing
1. Ignition OFF, disconnect the X2 harness connector at the left IP junction block.
2. Ignition ON, transmission in reverse, verify that a test lamp illuminates between the control circuit terminal E3 and ground.
瀚慖f the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the BCM.
3. If all circuits test normal, test or replace the left IP junction block.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Instrument Panel Electrical Center or Junction Block Replacement - Left Side (See: Maintenance/Fuses and Circuit Breakers/Fuse
Block/Service and Repair/Removal and Replacement/Instrument Panel Electrical Center or Junction Block Replacement - Left Side)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
B3715
DTC B3715
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC B3715 02
- Front Wiper Relay Drive Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) monitors the control circuit of the wiper relay. The voltage level should be low while the wiper relay is
de-energized and near system voltage when the relay is energized. After the BCM receives a low, intermittent, or mist signal from the wiper/washer
switch, it responds by applying battery voltage through the wiper relay control circuit to the coil side of the relay, energizing the WIPER Relay.
Ground is supplied at all times to the coil side of the WIPER relay.
Conditions for Running the DTC
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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1086
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1086
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at Q38 throttle body.
2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm
between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests
normal, replace the K20 engine control module.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal E and ground.
瀚慖f less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20
engine control module.
瀚慖f greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the K20 engine control module.
4. Ignition ON, verify that the scan tool Throttle Position Sensor 1 Voltage parameter is less than 0.3 V.
瀚慖f greater than the specified value, test the signal circuit terminal D for a short to voltage. If the circuit tests normal, replace the K20
engine control module.
5. Connect a 3 A fused jumper wire between the 5 V reference circuit terminal E and the throttle position sensor 1 signal circuit terminal D.
Verify the scan tool Throttle Position Sensor 1 Voltage parameter is greater than 4.89 V.
瀚慖f less than the specified value, test the signal circuit for an open/high resistance or for a short to ground. If the circuit tests normal,
replace the K20 engine control module.
6. Verify the scan tool Throttle Position Sensor 2 Voltage parameter is greater than 4.97 V.
瀚慖f less than the specified value, test the signal circuit terminal F for a short to ground. If the circuit tests normal, replace the K20 engine
control module.
Note: If the fuse in the jumper wire opens, the signal circuit is shorted to a voltage.
7. Connect a 3 A fused jumper wire between the throttle position sensor 2 signal circuit terminal F and the low reference circuit terminal C.
Verify the scan tool Throttle Position Sensor 2 Voltage parameter is less than 0.10 V.
瀚慖f greater than the specified value, test the signal circuit for an open/high resistance or for a short to voltage. If the circuit tests normal,
replace the K20 engine control module.
8. If all circuits test normal, replace the Q38 throttle body assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and
Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air
Induction/Throttle Body/Service and Repair/Removal and Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement,
programming, and setup
P0128
DTC P0128 (LAU)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0128
- Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature
Thursday, November 28, 2019
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1888
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1888
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.
2. Ignition OFF, all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down, test for less than 5 ohm between the
ground circuit terminal A and ground.
瀚慖f greater than the specified range, repair the ground circuit for an open/high resistance.
3. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal B and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
4. Ignition ON, verify that a test lamp illuminates between ignition voltage circuit terminal D and ground.
瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests
normal and the ignition voltage circuit fuse is open, test all the components connected to the ignition voltage circuit and replace as
necessary.
5. Engine running, observe the Ignition Coil 1-6 Control Circuit Low Voltage Test Status on the scan tool. Test Status should be Ok or Not
Run.
瀚慖f test status is Malfunction test for open or short to ground.
6. Engine running, observe the Ignition Coil 1-6 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.
瀚慖f test status is Malfunction test for open circuit.
7. Engine running, observe the Ignition Coil 1-6 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not
Run.
瀚慖f test status is Malfunction test for short to voltage.
8. If all circuits test normal, test or replace the appropriate T8 ignition coil.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Ignition Coil Replacement - Bank 1 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil
Replacement - Bank 1)
* Ignition Coil Replacement - Bank 2 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil
Replacement - Bank 2)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and
programming
P2307
DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 (LAU)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0351
- Ignition Coil 1 Control Circuit
DTC P0352
- Ignition Coil 2 Control Circuit
DTC P0353
- Ignition Coil 3 Control Circuit
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