2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2871
* 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 U1862 00
- Battery Energy Control Module Lost Communication with Serial Data Gateway Module
Diagnostic Fault Information
Circuit/System Description
Modules connected to the high and low speed GMLAN 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, for each virtual network. The messages are supervised and 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 enable signal circuit is energized by the body control module (BCM) to activate multiple modules when the BCM determines that
communication is required. Some modules may still become active due to their own ignition voltage source if the enable circuit is not functional.
The serial data gateway (SDG) module translates serial data messages between the high speed GMLAN serial data bus, the low speed GMLAN
serial data bus, and the high speed hybrid GMLAN serial data bus. Messages between the drive motor generator battery control module and the
other hybrid system control modules must pass thru the SDG module. DTC U1862 is set by the drive motor generator battery control module, but is
stored in and reported by the hybrid powertrain control module (HPCM).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur from the drive motor generator battery control module via the
SDG module.
Conditions for Setting the DTC
A supervised periodic message that includes the SDG module availability has not been received by the drive motor generator battery control
module.
Action Taken When the DTC Sets
* The charging system will not operate properly and the vehicle battery will discharge as the vehicle is driven.
* The driver information center (DIC) displays the message Service Hybrid System.
* Multiple DTCs may set depending on the fault location and when the fault occurred.
Conditions for Clearing the DTC
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Wednesday, December 16, 2020
Sunday, November 1, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1782
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1782
* 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
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The engine coolant temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. The engine control module
(ECM) supplies 5 V to the ECT sensor signal circuit and supplies a ground to the low reference circuit.
The purpose of this diagnostic is to analyze the performance of the thermostat by using the ECT sensor to determine if the engine coolant will
increase at the correct rate, and also to meet the calibrated target temperatures under various operating conditions.
The ECM uses the start-up ECT and the start-up intake air temperature (IAT) to begin the diagnostic calculation. The air flow into the engine is
accumulated, and vehicle speed, distance, and engine run time are also factored in to determine if the ECT does increase normally and reach the
calibrated target temperatures.
Conditions for Running the DTC
* DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0171, P0172, P0174, P0175, P0502, P0503 are
not set.
* The start-up IAT is warmer than -7掳C (+19掳F).
* The start-up ECT is colder than 70掳C (158掳F), when the IAT is above 10掳C (50掳F).
OR
* The start-up ECT is colder than 50掳C (122掳F), when the IAT is below 10掳C (50掳F).
* The engine run time is between 90 s and 22 min.
* The vehicle has traveled greater than 2.4 kilometers (1.5 miles) at greater than 8 km/h (5 mph).
* The accumulated airflow is between 20-75 g/s, with the minimum average airflow greater than 10 g/s.
* The fuel ethanol percentage is less than 85 %.
* This DTC runs once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the minimum ECT of 75掳C (167掳F) has not been met, when the IAT is greater than 10掳C (50掳F).
OR
The ECM detects that the minimum ECT of 55掳C (131掳F) has not been met, when the IAT is less than 10掳C (50掳F).
Action Taken When the DTC Sets
DTC P0128 is a Type B DTC.
Conditions for Clearing the MIL/DTC
DTC P0128 is a Type B DTC.
* 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
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The engine coolant temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. The engine control module
(ECM) supplies 5 V to the ECT sensor signal circuit and supplies a ground to the low reference circuit.
The purpose of this diagnostic is to analyze the performance of the thermostat by using the ECT sensor to determine if the engine coolant will
increase at the correct rate, and also to meet the calibrated target temperatures under various operating conditions.
The ECM uses the start-up ECT and the start-up intake air temperature (IAT) to begin the diagnostic calculation. The air flow into the engine is
accumulated, and vehicle speed, distance, and engine run time are also factored in to determine if the ECT does increase normally and reach the
calibrated target temperatures.
Conditions for Running the DTC
* DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0171, P0172, P0174, P0175, P0502, P0503 are
not set.
* The start-up IAT is warmer than -7掳C (+19掳F).
* The start-up ECT is colder than 70掳C (158掳F), when the IAT is above 10掳C (50掳F).
OR
* The start-up ECT is colder than 50掳C (122掳F), when the IAT is below 10掳C (50掳F).
* The engine run time is between 90 s and 22 min.
* The vehicle has traveled greater than 2.4 kilometers (1.5 miles) at greater than 8 km/h (5 mph).
* The accumulated airflow is between 20-75 g/s, with the minimum average airflow greater than 10 g/s.
* The fuel ethanol percentage is less than 85 %.
* This DTC runs once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the minimum ECT of 75掳C (167掳F) has not been met, when the IAT is greater than 10掳C (50掳F).
OR
The ECM detects that the minimum ECT of 55掳C (131掳F) has not been met, when the IAT is less than 10掳C (50掳F).
Action Taken When the DTC Sets
DTC P0128 is a Type B DTC.
Conditions for Clearing the MIL/DTC
DTC P0128 is a Type B DTC.
Tuesday, October 27, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1658
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1658
* 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 P0016
- Crankshaft Position (CKP) Camshaft Position (CMP) Correlation
Circuit/System Description
The engine control module (ECM) uses the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor pulses to monitor the
correlation between the crankshaft and the camshaft position. The crankshaft reluctor wheel consists of a 60-tooth pattern with 2 teeth missing for
the reference gap. Each tooth is evenly spaced 6 degrees apart, except for the reference gap. The camshaft reluctor wheel has 4 teeth, 2 narrow, and
2 wide. The 4 trailing edges of each tooth are evenly spaced at 90 degrees apart around the circumference of the camshaft sprocket. With the engine
running, and the CMP actuator in the parked position, the ECM expects the camshaft signal pulses to occur 36 crankshaft degrees before top dead
center (BTDC) for cylinder number 1, and every 90 degrees thereafter.
Conditions for Running the DTC
* DTC P0335, P0336, P0340, P0341, P0641, or P0651 is not set.
* The engine is running.
* The engine speed is less than 2,000 RPM.
* DTC P0016 runs continuously when the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the CMP sensor pulses occur more than 11 crank degrees before, or 11 crank degrees after, nominal position for 24 out of 30
engine cycles.
Action Taken When the DTC Sets
DTC P0016 is a Type B DTC.
Conditions for Clearing the DTC
DTC P0016 is a Type B DTC.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic
Ignition System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information
Circuit/System Verification
* 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 P0016
- Crankshaft Position (CKP) Camshaft Position (CMP) Correlation
Circuit/System Description
The engine control module (ECM) uses the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor pulses to monitor the
correlation between the crankshaft and the camshaft position. The crankshaft reluctor wheel consists of a 60-tooth pattern with 2 teeth missing for
the reference gap. Each tooth is evenly spaced 6 degrees apart, except for the reference gap. The camshaft reluctor wheel has 4 teeth, 2 narrow, and
2 wide. The 4 trailing edges of each tooth are evenly spaced at 90 degrees apart around the circumference of the camshaft sprocket. With the engine
running, and the CMP actuator in the parked position, the ECM expects the camshaft signal pulses to occur 36 crankshaft degrees before top dead
center (BTDC) for cylinder number 1, and every 90 degrees thereafter.
Conditions for Running the DTC
* DTC P0335, P0336, P0340, P0341, P0641, or P0651 is not set.
* The engine is running.
* The engine speed is less than 2,000 RPM.
* DTC P0016 runs continuously when the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the CMP sensor pulses occur more than 11 crank degrees before, or 11 crank degrees after, nominal position for 24 out of 30
engine cycles.
Action Taken When the DTC Sets
DTC P0016 is a Type B DTC.
Conditions for Clearing the DTC
DTC P0016 is a Type B DTC.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic
Ignition System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information
Circuit/System Verification
Saturday, February 22, 2020
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1402
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1402
* 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
- Immobilizer Key Incorrect
Circuit/System Description
The body control module (BCM) sends the pre-release information to the engine control module (ECM) via the serial data circuit. The ECM then
sends a challenge to the BCM. Both the ECM and BCM perform a calculation on this challenge. If the calculated response from the BCM 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 BCM does not equal the calculation performed by the ECM.
Action Taken When the DTC Sets
* The security indicator in the instrument cluster 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.
* A history DTC will be cleared after 40 malfunction-free ignition cycles or when a scan tool is used to clear DTCs.
Diagnostic Aids
The key referenced in the DTC descriptor does not refer to the vehicle key. In this case, key is referring to the challenge response.
Reference Information
Schematic Reference
Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer
Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and
Operation/Immobilizer)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information
Circuit/System Verification
Note: Because of normal system communications between the BCM and ECM, any immobilizer B-codes must be diagnosed prior to the diagnosis
Tuesday, January 7, 2020
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1276
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1276
* 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 P0335
- Crankshaft Position Sensor Circuit
DTC P0336
- Crankshaft Position Sensor Performance
DTC P0338
- Crankshaft Position Sensor Circuit High Duty Cycle
Diagnostic Fault Information
Circuit/System Description
The crankshaft position sensor is located on the rear of bank 1 of the engine block. The crankshaft position sensor is a hall effect switch that works
in conjunction with a 58X reluctor wheel that is attached to the crankshaft. Each tooth on the reluctor wheel is spaced 6 degrees apart with one span
having a 12 degree space. The engine control module (ECM) uses the 12 degree space to determine top dead center (TDC) for cylinders 1 and 4.
The ECM determines when cylinder 1 is on the compression stroke by monitoring the crankshaft position sensor and the camshaft position sensors.
The ECM can synchronize the ignition timing, fuel injector timing, and spark knock control based on the crankshaft position sensor and the
camshaft position sensor inputs.
Conditions for Running the DTC
* The engine is cranking or operating.
* The ECM has detected greater than 12 camshaft revolutions.
* The DTC P0335 and P0336 run continuously once the above conditions are met for greater than 5 seconds.
* The DTC P0338 runs once each engine revolution once the above conditions are met for greater than 2 seconds.
Conditions for Setting the DTC
P0335
* The ECM does not detect a signal from the crankshaft position sensor.
OR
* The ECM detects a crankshaft position signal with out reference pulse for greater than 3 revolutions, 6 revolutions for LLT.
* Either condition exists for greater than 1 second or a cumulative of 10 seconds.
P0336
* The ECM re-syncs the engine position 6 or more times during an ignition cycle.
* The ECM re-syncs the engine position 2,600 or more times during an ignition cycle, for LLT.
OR
* The ECM detects 28 or more interruptions in the engine speed signal during an ignition cycle.
* Either condition exists for greater than 1 second or a cumulative of 10 seconds.
P0338
* The ECM detects a difference of greater than 8 teeth between reference gap position pulses.
* The ECM detects a difference of greater than 250 teeth between reference gap position pulses, for LLT.
* The condition exists for greater than 1 second or a cumulative of 10 seconds.
Action Taken When the DTC Sets
DTCs P0335, P0336, and P0338 are Type A DTCs.
Conditions for Clearing the DTC
DTCs P0335, P0336, and P0338 are Type A DTCs.
Tuesday, December 17, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 945
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 945
* 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 C056D XX
- Electronic Control Unit Hardware
Circuit/System Description
The internal fault detection is handled inside the control module. The symptom byte listed in the DTC Descriptor is for engineering reference only.
No external circuit diagnosis is involved.
Conditions for Running the DTC
The module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and ground. This
program runs even if the voltage is out of the valid operating range.
Conditions for Setting the DTC
The module has detected an internal malfunction.
Action Taken When the DTC Sets
The module refuses all additional inputs.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.
Diagnostic Aids
* This DTC may be stored as a history DTC without affecting the operation of the module.
* If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.
* If this DTC is retrieved as both a current and history DTC, replace the module that set the DTC.
Circuit/System Verification
Verify that DTC C056D is not set.
If the DTC is set, program the control module. If the DTC resets, replace the control module that set the DTC.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
Power Steering
DTC C056D
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 Descriptor
DTC C056D 39
- ECU Hardware Performance Internal Electronic Failure
* 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 C056D XX
- Electronic Control Unit Hardware
Circuit/System Description
The internal fault detection is handled inside the control module. The symptom byte listed in the DTC Descriptor is for engineering reference only.
No external circuit diagnosis is involved.
Conditions for Running the DTC
The module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and ground. This
program runs even if the voltage is out of the valid operating range.
Conditions for Setting the DTC
The module has detected an internal malfunction.
Action Taken When the DTC Sets
The module refuses all additional inputs.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.
Diagnostic Aids
* This DTC may be stored as a history DTC without affecting the operation of the module.
* If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.
* If this DTC is retrieved as both a current and history DTC, replace the module that set the DTC.
Circuit/System Verification
Verify that DTC C056D is not set.
If the DTC is set, program the control module. If the DTC resets, replace the control module that set the DTC.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
Power Steering
DTC C056D
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 Descriptor
DTC C056D 39
- ECU Hardware Performance Internal Electronic Failure
Thursday, December 12, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 823
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 823
* 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 C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
* 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 C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
Wednesday, December 11, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 813
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 813
* 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 C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
* 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 C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 803
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 803
* 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 C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
* 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 C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
Sunday, December 8, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 747
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 747
* 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 B3894 5A
- Stop Lamp Switch Circuit Plausibility Failure
Circuit/System Description
The brake switch is hard wired to the fuel pump/trailer brake control module. The body control module (BCM) sends a brake switch status serial
data message to the fuel pump/trailer brake control module. The fuel pump/trailer brake control module compares the states of the brake switch
signal to the serial data message after a master cylinder brake pressure sensor threshold is exceeded. If the brake switch signal and the serial data
message are not in agreement or if the serial data message is not valid, a DTC will set and the trailer brake control system will be disabled.
Conditions for Running the DTC
* Battery voltage is 9.5-17 V.
* The module initialization has taken place.
* The master cylinder brake pressure exceeds threshold
Conditions for Setting the DTC
* The brake switch serial data message is not valid.
* The actual brake switch input to the fuel pump/trailer brake control module, and the serial data information for the brake switch do not match.
Action Taken When the DTC Sets
* The trailer brake control will be disabled for the remainder of the ignition cycle.
* The driver information center (DIC) will display Service Trailer Brake System.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The fuel pump/trailer brake control module clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Trailer Brake Control Schematics (See: Brakes and Traction Control/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Trailer Brake Controls Description and Operation (See: Powertrain Management/Computers and Control Systems/Description and
Operation/Trailer Brake Controls Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, press the brake pedal. The brake lights should illuminate and the Brake Switch Status parameter should indicate ON.
Circuit/System Testing
* 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 B3894 5A
- Stop Lamp Switch Circuit Plausibility Failure
Circuit/System Description
The brake switch is hard wired to the fuel pump/trailer brake control module. The body control module (BCM) sends a brake switch status serial
data message to the fuel pump/trailer brake control module. The fuel pump/trailer brake control module compares the states of the brake switch
signal to the serial data message after a master cylinder brake pressure sensor threshold is exceeded. If the brake switch signal and the serial data
message are not in agreement or if the serial data message is not valid, a DTC will set and the trailer brake control system will be disabled.
Conditions for Running the DTC
* Battery voltage is 9.5-17 V.
* The module initialization has taken place.
* The master cylinder brake pressure exceeds threshold
Conditions for Setting the DTC
* The brake switch serial data message is not valid.
* The actual brake switch input to the fuel pump/trailer brake control module, and the serial data information for the brake switch do not match.
Action Taken When the DTC Sets
* The trailer brake control will be disabled for the remainder of the ignition cycle.
* The driver information center (DIC) will display Service Trailer Brake System.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The fuel pump/trailer brake control module clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Trailer Brake Control Schematics (See: Brakes and Traction Control/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Trailer Brake Controls Description and Operation (See: Powertrain Management/Computers and Control Systems/Description and
Operation/Trailer Brake Controls Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, press the brake pedal. The brake lights should illuminate and the Brake Switch Status parameter should indicate ON.
Circuit/System Testing
Friday, November 29, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 557
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 557
* 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 B2425 04
- Left Seat Heater Cushion Circuit Open
DTC B2425 0A
- Left Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2425 0B
- Left Seat Heater Cushion Circuit Current Above Threshold
DTC B2425 0C
- Left Seat Heater Cushion Circuit Current Below Threshold
DTC B2425 0D
- Left Seat Heater Cushion Circuit Resistance Above Threshold
DTC B2425 0E
- Left Seat Heater Cushion Circuit Resistance Below Threshold
DTC B2425 1F
- Left Seat Heater Cushion Circuit Intermittent
DTC B2430 04
- Right Seat Heater Cushion Circuit Open
DTC B2430 0A
- Right Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2430 0B
- Right Seat Heater Cushion Circuit Current Above Threshold
DTC B2430 0C
- Right Seat Heater Cushion Circuit Current Below Threshold
DTC B2430 0D
- Right Seat Heater Cushion Circuit Resistance Above Threshold
DTC B2430 0E
- Right Seat Heater Cushion Circuit Resistance Below Threshold
DTC B2430 1F
- Right Seat Heater Cushion Circuit Intermittent
Diagnostic Fault Information
* 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 B2425 04
- Left Seat Heater Cushion Circuit Open
DTC B2425 0A
- Left Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2425 0B
- Left Seat Heater Cushion Circuit Current Above Threshold
DTC B2425 0C
- Left Seat Heater Cushion Circuit Current Below Threshold
DTC B2425 0D
- Left Seat Heater Cushion Circuit Resistance Above Threshold
DTC B2425 0E
- Left Seat Heater Cushion Circuit Resistance Below Threshold
DTC B2425 1F
- Left Seat Heater Cushion Circuit Intermittent
DTC B2430 04
- Right Seat Heater Cushion Circuit Open
DTC B2430 0A
- Right Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2430 0B
- Right Seat Heater Cushion Circuit Current Above Threshold
DTC B2430 0C
- Right Seat Heater Cushion Circuit Current Below Threshold
DTC B2430 0D
- Right Seat Heater Cushion Circuit Resistance Above Threshold
DTC B2430 0E
- Right Seat Heater Cushion Circuit Resistance Below Threshold
DTC B2430 1F
- Right Seat Heater Cushion Circuit Intermittent
Diagnostic Fault Information
Monday, November 25, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 471
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 471
* 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 B1529 03
- Device Voltage Reference Output Circuit Voltage Below Threshold
DTC B1529 07
- Device Voltage Reference Output Circuit Voltage Above Threshold
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) supplies voltage to the audio steering wheel control switches and monitors the return signal. Each switch state is
associated to a set resistance value and when pressed a specific voltage drop occurs across the resistor unique to the switch. The BCM identifies the
switch selection and activates the feature.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* The ignition is ON.
Conditions for Setting the DTC
B1529 03
* The BCM detects a short to ground in the B+ voltage reference circuit.
* The above condition is present for greater than 30 seconds.
B1529 07
* The BCM detects a short to voltage in the B+ voltage reference circuit.
* The above condition is present for greater than 30 seconds.
Action Taken When the DTC Sets
The BCM will ignore switch inputs.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction free ignition cycles have occurred.
Reference Information
Schematic Reference
Steering Wheel Secondary/Configurable Control Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Steering
Wheel Secondary/Configurable Control Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Steering Wheel Controls Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Steering Wheel
Controls Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
* 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 B1529 03
- Device Voltage Reference Output Circuit Voltage Below Threshold
DTC B1529 07
- Device Voltage Reference Output Circuit Voltage Above Threshold
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) supplies voltage to the audio steering wheel control switches and monitors the return signal. Each switch state is
associated to a set resistance value and when pressed a specific voltage drop occurs across the resistor unique to the switch. The BCM identifies the
switch selection and activates the feature.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* The ignition is ON.
Conditions for Setting the DTC
B1529 03
* The BCM detects a short to ground in the B+ voltage reference circuit.
* The above condition is present for greater than 30 seconds.
B1529 07
* The BCM detects a short to voltage in the B+ voltage reference circuit.
* The above condition is present for greater than 30 seconds.
Action Taken When the DTC Sets
The BCM will ignore switch inputs.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction free ignition cycles have occurred.
Reference Information
Schematic Reference
Steering Wheel Secondary/Configurable Control Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Steering
Wheel Secondary/Configurable Control Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Steering Wheel Controls Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Steering Wheel
Controls Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Sunday, November 24, 2019
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1442
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1442
* 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 P0602
- Control Module Not Programmed
DTC P0603
- Control Module Long Term Memory Reset
DTC P0604
- Control Module Random Access Memory Performance
DTC P0605
- Control Module Programming Read Only Memory Performance
DTC P0606
- Control Module Processor Performance
DTC P0610
- Control Module Vehicle Options Incorrect
DTC P0614
- Engine Control Module/Transmission Control Module Programming Not Plausible
DTC P0630
- VIN Not Programmed or Mismatched - Engine Control Module (ECM)
DTC P06D1
- Control Module Ignition Coil System Circuitry Performance
DTC P160D
- Incorrect Engine Calibration Detected
DTC P160E
- Engine Calibration Monitoring Not Programmed
DTC P161C
- Tire Size Not Programmed
DTC P2610
- Control Module Ignition Off Timer Performance
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM). This diagnostic also addresses if
the ECM is not programmed, or is programmed incorrectly.
Conditions for Running the DTC
P0602, P0603, P0604, P0605, P0610, P0614, P0630, P160D, P160E, P161C
These DTCs run continuously when the ignition is ON.
P0606
DTC P0606 runs continuously when the engine speed is greater than 1,200 RPM.
P06D1
* The engine is running.
* The engine speed is less than 5,000 RPM.
* The battery voltage is between 10-18 V.
* DTC P06D1 runs continuously when the above conditions are met.
P2610
DTC P2610 runs continuously when the engine speed is greater than 240 RPM.
Saturday, November 16, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 790
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 790
* 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 B3894 5A
- Stop Lamp Switch Circuit Plausibility Failure
Circuit/System Description
The brake switch is hard wired to the fuel pump/trailer brake control module. The body control module (BCM) sends a brake switch status serial
data message to the fuel pump/trailer brake control module. The fuel pump/trailer brake control module compares the states of the brake switch
signal to the serial data message after a master cylinder brake pressure sensor threshold is exceeded. If the brake switch signal and the serial data
message are not in agreement or if the serial data message is not valid, a DTC will set and the trailer brake control system will be disabled.
Conditions for Running the DTC
* Battery voltage is 9.5-17 V.
* The module initialization has taken place.
* The master cylinder brake pressure exceeds threshold
Conditions for Setting the DTC
* The brake switch serial data message is not valid.
* The actual brake switch input to the fuel pump/trailer brake control module, and the serial data information for the brake switch do not match.
Action Taken When the DTC Sets
* The trailer brake control will be disabled for the remainder of the ignition cycle.
* The driver information center (DIC) will display Service Trailer Brake System.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The fuel pump/trailer brake control module clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Trailer Brake Control Schematics (See: Brakes and Traction Control/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Trailer Brake Controls Description and Operation (See: Powertrain Management/Computers and Control Systems/Description and
Operation/Trailer Brake Controls Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, press the brake pedal. The brake lights should illuminate and the Brake Switch Status parameter should indicate ON.
Circuit/System Testing
* 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 B3894 5A
- Stop Lamp Switch Circuit Plausibility Failure
Circuit/System Description
The brake switch is hard wired to the fuel pump/trailer brake control module. The body control module (BCM) sends a brake switch status serial
data message to the fuel pump/trailer brake control module. The fuel pump/trailer brake control module compares the states of the brake switch
signal to the serial data message after a master cylinder brake pressure sensor threshold is exceeded. If the brake switch signal and the serial data
message are not in agreement or if the serial data message is not valid, a DTC will set and the trailer brake control system will be disabled.
Conditions for Running the DTC
* Battery voltage is 9.5-17 V.
* The module initialization has taken place.
* The master cylinder brake pressure exceeds threshold
Conditions for Setting the DTC
* The brake switch serial data message is not valid.
* The actual brake switch input to the fuel pump/trailer brake control module, and the serial data information for the brake switch do not match.
Action Taken When the DTC Sets
* The trailer brake control will be disabled for the remainder of the ignition cycle.
* The driver information center (DIC) will display Service Trailer Brake System.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The fuel pump/trailer brake control module clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Trailer Brake Control Schematics (See: Brakes and Traction Control/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Trailer Brake Controls Description and Operation (See: Powertrain Management/Computers and Control Systems/Description and
Operation/Trailer Brake Controls Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, press the brake pedal. The brake lights should illuminate and the Brake Switch Status parameter should indicate ON.
Circuit/System Testing
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 721
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 721
* 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 B3130 00
- All Door Unlock Circuit
DTC B3135 00
- All Door Lock Circuit
Diagnostic Fault Information
Circuit/System Description
The LOCK/UNLOCK relay is controlled by the body control module (BCM) by providing voltage to one side of the relay or providing a ground to
the other side of the relay. During lock or unlock operation, battery voltage will be supplied to the lock actuators through the energized side of the
relay and grounded through the de-energized side of the relay.
Conditions for Running the DTC
The system voltage must be between 9-16 volts.
Conditions for Setting the DTC
B3130 00
The BCM detects a fault on the REAR DOOR LOCK/UNLOCK relay control circuit while commanding the rear doors to unlock.
B3135 00
The BCM detects a fault on the REAR DOOR LOCK/UNLOCK relay control circuit while commanding the rear doors to lock.
Action Taken When the DTC Sets
The rear power door locks will malfunction.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will become a history DTC.
* A history DTC will clear after 50 ignition cycles.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
* 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 B3130 00
- All Door Unlock Circuit
DTC B3135 00
- All Door Lock Circuit
Diagnostic Fault Information
Circuit/System Description
The LOCK/UNLOCK relay is controlled by the body control module (BCM) by providing voltage to one side of the relay or providing a ground to
the other side of the relay. During lock or unlock operation, battery voltage will be supplied to the lock actuators through the energized side of the
relay and grounded through the de-energized side of the relay.
Conditions for Running the DTC
The system voltage must be between 9-16 volts.
Conditions for Setting the DTC
B3130 00
The BCM detects a fault on the REAR DOOR LOCK/UNLOCK relay control circuit while commanding the rear doors to unlock.
B3135 00
The BCM detects a fault on the REAR DOOR LOCK/UNLOCK relay control circuit while commanding the rear doors to lock.
Action Taken When the DTC Sets
The rear power door locks will malfunction.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will become a history DTC.
* A history DTC will clear after 50 ignition cycles.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Wednesday, November 13, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 535
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 535
* 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 B1825 01
- Seat Recline Position Sensor Circuit Short to Battery
DTC B1825 06
- Seat Recline Position Sensor Circuit Short to Ground or Open
DTC B1825 5A
- Seat Recline Position Sensor Circuit Plausibility Failure
DTC B1850 01
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Battery
DTC B1850 06
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open
DTC B1850 5A
- Left Seat Lumbar Horizontal Position Sensor Circuit Plausibility Failure
DTC B1860 01
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Battery
DTC B1860 06
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open
DTC B1860 5A
- Left Seat Lumbar Vertical Position Sensor Circuit Plausibility Failure
DTC B2355 01
- Left Seat Front Vertical Position Sensor Circuit Short to Battery
DTC B2355 06
- Left Seat Front Vertical Position Sensor Circuit Short to Ground or Open
DTC B2355 5A
- Left Seat Front Vertical Position Sensor Circuit Plausibility Failure
DTC B2365 01
- Left Seat Rear Vertical Position Sensor Circuit Short to Battery
DTC B2365 06
- Left Seat Rear Vertical Position Sensor Circuit Short to Ground or Open
DTC B2365 5A
- Left Seat Rear Vertical Position Sensor Circuit Plausibility Failure
DTC B2375 01
- Left Seat Assembly Horizontal Position Sensor Circuit Short to Battery
DTC B2375 06
- Left Seat Assembly Horizontal Position Sensor Circuit Short to Ground or Open
DTC B2375 5A
- Left Seat Assembly Horizontal Position Sensor Circuit Plausibility Failure
Diagnostic Fault Information
* 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 B1825 01
- Seat Recline Position Sensor Circuit Short to Battery
DTC B1825 06
- Seat Recline Position Sensor Circuit Short to Ground or Open
DTC B1825 5A
- Seat Recline Position Sensor Circuit Plausibility Failure
DTC B1850 01
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Battery
DTC B1850 06
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open
DTC B1850 5A
- Left Seat Lumbar Horizontal Position Sensor Circuit Plausibility Failure
DTC B1860 01
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Battery
DTC B1860 06
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open
DTC B1860 5A
- Left Seat Lumbar Vertical Position Sensor Circuit Plausibility Failure
DTC B2355 01
- Left Seat Front Vertical Position Sensor Circuit Short to Battery
DTC B2355 06
- Left Seat Front Vertical Position Sensor Circuit Short to Ground or Open
DTC B2355 5A
- Left Seat Front Vertical Position Sensor Circuit Plausibility Failure
DTC B2365 01
- Left Seat Rear Vertical Position Sensor Circuit Short to Battery
DTC B2365 06
- Left Seat Rear Vertical Position Sensor Circuit Short to Ground or Open
DTC B2365 5A
- Left Seat Rear Vertical Position Sensor Circuit Plausibility Failure
DTC B2375 01
- Left Seat Assembly Horizontal Position Sensor Circuit Short to Battery
DTC B2375 06
- Left Seat Assembly Horizontal Position Sensor Circuit Short to Ground or Open
DTC B2375 5A
- Left Seat Assembly Horizontal Position Sensor Circuit Plausibility Failure
Diagnostic Fault Information
Tuesday, November 12, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 194
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 194
* 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 B0052 00
- Deployment Commanded
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) contains a device that converts vehicle velocity changes into an electrical signal. The
SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional
signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the stored values, the
SDM will cause current to flow through the deployment loops, deploying the air bags and/or pretensioners causing DTC B0052 to set.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B0052
* The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules.
* The SDM detects a side impact of sufficient force to warrant deployment of a side impact module and/or roof rail module.
* The SDM has deployed the seat belt pretensioner for 3 separate deployments.
Action Taken When the DTC Sets
* The SDM requests the instrument panel cluster (IPC) to illuminate the Service Air Bag indicator.
* The SDM records crash data.
Conditions for Clearing the DTC
After an air bag deployment or 3 separate pretensioner deployments the DTC becomes latched and cannot be cleared.
Reference Information
Schematic Reference
SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Important: The seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment.
The SDM is capable of sustaining 3 pretensioner deployment events, or one frontal or side deployment event. After the maximum number
of deployments has occurred, DTC B0052 sets and becomes a latched code, which cannot be cleared.
1. Ignition OFF, verify no signs of inflator module or pretensioner deployment exist.
* 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 B0052 00
- Deployment Commanded
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) contains a device that converts vehicle velocity changes into an electrical signal. The
SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional
signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the stored values, the
SDM will cause current to flow through the deployment loops, deploying the air bags and/or pretensioners causing DTC B0052 to set.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B0052
* The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules.
* The SDM detects a side impact of sufficient force to warrant deployment of a side impact module and/or roof rail module.
* The SDM has deployed the seat belt pretensioner for 3 separate deployments.
Action Taken When the DTC Sets
* The SDM requests the instrument panel cluster (IPC) to illuminate the Service Air Bag indicator.
* The SDM records crash data.
Conditions for Clearing the DTC
After an air bag deployment or 3 separate pretensioner deployments the DTC becomes latched and cannot be cleared.
Reference Information
Schematic Reference
SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Important: The seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment.
The SDM is capable of sustaining 3 pretensioner deployment events, or one frontal or side deployment event. After the maximum number
of deployments has occurred, DTC B0052 sets and becomes a latched code, which cannot be cleared.
1. Ignition OFF, verify no signs of inflator module or pretensioner deployment exist.
Saturday, November 9, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 194
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 194
* 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 B0052 00
- Deployment Commanded
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) contains a device that converts vehicle velocity changes into an electrical signal. The
SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional
signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the stored values, the
SDM will cause current to flow through the deployment loops, deploying the air bags and/or pretensioners causing DTC B0052 to set.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B0052
* The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules.
* The SDM detects a side impact of sufficient force to warrant deployment of a side impact module and/or roof rail module.
* The SDM has deployed the seat belt pretensioner for 3 separate deployments.
Action Taken When the DTC Sets
* The SDM requests the instrument panel cluster (IPC) to illuminate the Service Air Bag indicator.
* The SDM records crash data.
Conditions for Clearing the DTC
After an air bag deployment or 3 separate pretensioner deployments the DTC becomes latched and cannot be cleared.
Reference Information
Schematic Reference
SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Important: The seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment.
The SDM is capable of sustaining 3 pretensioner deployment events, or one frontal or side deployment event. After the maximum number
of deployments has occurred, DTC B0052 sets and becomes a latched code, which cannot be cleared.
1. Ignition OFF, verify no signs of inflator module or pretensioner deployment exist.
* 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 B0052 00
- Deployment Commanded
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) contains a device that converts vehicle velocity changes into an electrical signal. The
SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional
signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the stored values, the
SDM will cause current to flow through the deployment loops, deploying the air bags and/or pretensioners causing DTC B0052 to set.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B0052
* The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules.
* The SDM detects a side impact of sufficient force to warrant deployment of a side impact module and/or roof rail module.
* The SDM has deployed the seat belt pretensioner for 3 separate deployments.
Action Taken When the DTC Sets
* The SDM requests the instrument panel cluster (IPC) to illuminate the Service Air Bag indicator.
* The SDM records crash data.
Conditions for Clearing the DTC
After an air bag deployment or 3 separate pretensioner deployments the DTC becomes latched and cannot be cleared.
Reference Information
Schematic Reference
SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Important: The seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment.
The SDM is capable of sustaining 3 pretensioner deployment events, or one frontal or side deployment event. After the maximum number
of deployments has occurred, DTC B0052 sets and becomes a latched code, which cannot be cleared.
1. Ignition OFF, verify no signs of inflator module or pretensioner deployment exist.
Tuesday, November 5, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1122
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1122
* 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 P0A9C
- Hybrid Battery 1 Temperature Sensor Performance
DTC P0A9D
- Hybrid Battery 1 Temperature Sensor Circuit Low Voltage
DTC P0A9E
- Hybrid Battery 1 Temperature Sensor Circuit High Voltage
DTC P0AC6
- Hybrid Battery 2 Temperature Sensor Performance
DTC P0AC7
- Hybrid Battery 2 Temperature Sensor Circuit Low Voltage
DTC P0AC8
- Hybrid Battery 2 Temperature Sensor Circuit High Voltage
DTC P0ACB
- Hybrid Battery 3 Temperature Sensor Performance
DTC P0ACC
- Hybrid Battery 3 Temperature Sensor Circuit Low Voltage
DTC P0ACD
- Hybrid Battery 3 Temperature Sensor Circuit High Voltage
DTC P0AE9
- Hybrid Battery 4 Temperature Sensor Performance
DTC P0AEA
- Hybrid Battery 4 Temperature Sensor Circuit Low Voltage
DTC P0AEB
- Hybrid Battery 4 Temperature Sensor Circuit High Voltage
Typical Scan Tool Data
Circuit/System Description
The drive motor generator battery has four hybrid battery temperature sensors. The hybrid battery temperature sensors are located on the top of the
hybrid batteries. The temperature sensor is a variable resistor that measures the temperature of the hybrid batteries. The control module supplies 5 V
to the signal circuit and a ground for the low reference circuit. The hybrid battery temperature sensor resistance changes with battery temperature.
The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the resistance of the sensor. The drive
motor generator battery control module (BECM) uses the battery temperature sensors to determine the hybrid battery temperature to control the
battery cooling fan operation.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
* 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 P0A9C
- Hybrid Battery 1 Temperature Sensor Performance
DTC P0A9D
- Hybrid Battery 1 Temperature Sensor Circuit Low Voltage
DTC P0A9E
- Hybrid Battery 1 Temperature Sensor Circuit High Voltage
DTC P0AC6
- Hybrid Battery 2 Temperature Sensor Performance
DTC P0AC7
- Hybrid Battery 2 Temperature Sensor Circuit Low Voltage
DTC P0AC8
- Hybrid Battery 2 Temperature Sensor Circuit High Voltage
DTC P0ACB
- Hybrid Battery 3 Temperature Sensor Performance
DTC P0ACC
- Hybrid Battery 3 Temperature Sensor Circuit Low Voltage
DTC P0ACD
- Hybrid Battery 3 Temperature Sensor Circuit High Voltage
DTC P0AE9
- Hybrid Battery 4 Temperature Sensor Performance
DTC P0AEA
- Hybrid Battery 4 Temperature Sensor Circuit Low Voltage
DTC P0AEB
- Hybrid Battery 4 Temperature Sensor Circuit High Voltage
Typical Scan Tool Data
Circuit/System Description
The drive motor generator battery has four hybrid battery temperature sensors. The hybrid battery temperature sensors are located on the top of the
hybrid batteries. The temperature sensor is a variable resistor that measures the temperature of the hybrid batteries. The control module supplies 5 V
to the signal circuit and a ground for the low reference circuit. The hybrid battery temperature sensor resistance changes with battery temperature.
The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the resistance of the sensor. The drive
motor generator battery control module (BECM) uses the battery temperature sensors to determine the hybrid battery temperature to control the
battery cooling fan operation.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
Conditions for Setting the DTC
Monday, November 4, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1042
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1042
* 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 C0896 03
- Device Voltage Range Below Threshold
DTC C0896 07
- Device Voltage Range Above Threshold
Circuit/System Description
The transfer case shift control module (TCCM) monitors the battery voltage feed to the TCCM. This DTC detects if the battery voltage is out of
range. This could indicate a vehicle wide issue in which all electrical components would be affected, or it could be TCCM specific due to poor
power or ground connections.
Conditions for Running the DTC
* Ignition ON.
* System voltage 10.5-18.5 V.
Conditions for Setting the DTC
System voltage above 18.5 V or below 10.5 and a mode shift is requested.
Action Taken When the DTC Sets
* Shifting disabled until battery voltage is within specification.
* Mode indicator will illuminate current mode.
Conditions for Clearing the DTC
* The TCCM clears the DTC once the conditions for setting the DTC are no longer present.
* A history DTC clears after 40 consecutive warm up cycles without a fault present.
* History DTCs can be cleared using a scan tool.
Diagnostic Aids
* Any mode shift requested when the battery voltage is below 12 V may set this DTC.
* Improperly connecting the cables during a jump start can cause C0896 07 to set.
* The Transfer Case High/Low Clutch Reset (See: Transmission and Drivetrain/Transfer Case/Testing and Inspection/Symptom Related
Diagnostic Procedures/MP 3023/3024-NQH - Transfer Case/Transfer Case High/Low Clutch Reset) procedure may need to be performed
after repair.
* EL-49742 - harness is a good source for B+ and ground.
Reference Information
Schematic Reference
Transfer Case Control Schematics (See: Transmission and Drivetrain/Transfer Case/Diagrams/Electrical Diagrams/MP 3023/3024-NQH -
Transfer Case)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
* 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 C0896 03
- Device Voltage Range Below Threshold
DTC C0896 07
- Device Voltage Range Above Threshold
Circuit/System Description
The transfer case shift control module (TCCM) monitors the battery voltage feed to the TCCM. This DTC detects if the battery voltage is out of
range. This could indicate a vehicle wide issue in which all electrical components would be affected, or it could be TCCM specific due to poor
power or ground connections.
Conditions for Running the DTC
* Ignition ON.
* System voltage 10.5-18.5 V.
Conditions for Setting the DTC
System voltage above 18.5 V or below 10.5 and a mode shift is requested.
Action Taken When the DTC Sets
* Shifting disabled until battery voltage is within specification.
* Mode indicator will illuminate current mode.
Conditions for Clearing the DTC
* The TCCM clears the DTC once the conditions for setting the DTC are no longer present.
* A history DTC clears after 40 consecutive warm up cycles without a fault present.
* History DTCs can be cleared using a scan tool.
Diagnostic Aids
* Any mode shift requested when the battery voltage is below 12 V may set this DTC.
* Improperly connecting the cables during a jump start can cause C0896 07 to set.
* The Transfer Case High/Low Clutch Reset (See: Transmission and Drivetrain/Transfer Case/Testing and Inspection/Symptom Related
Diagnostic Procedures/MP 3023/3024-NQH - Transfer Case/Transfer Case High/Low Clutch Reset) procedure may need to be performed
after repair.
* EL-49742 - harness is a good source for B+ and ground.
Reference Information
Schematic Reference
Transfer Case Control Schematics (See: Transmission and Drivetrain/Transfer Case/Diagrams/Electrical Diagrams/MP 3023/3024-NQH -
Transfer Case)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
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