2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 6
B2180 - B2545
Sunday, December 1, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 599
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 599
瀚慖f not the specified value, replace the liftgate handle switch.
3. Test for less than 2 ohms between the signal terminal A and the low reference terminal B with the switch in the closed position.
瀚慖f greater than the specified range, replace the liftgate handle switch.
Liftgate Close Switch
1. Ignition OFF, disconnect the harness connector at the liftgate close switch.
2. Test for infinite resistance between the signal terminal D and the low reference terminal A with the switch in the open position.
瀚慖f not the specified value, replace the liftgate close switch.
3. Test for less than 2 ohms between the signal terminal D and the low reference terminal A with the switch in the closed position.
瀚慖f greater than the specified range, replace the liftgate close switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Liftgate Release Switch Replacement (Except Avalanche and Escalade EXT) (See: Body and Frame/Doors, Hood and Trunk/Trunk /
Liftgate/Trunk / Liftgate Switch/Service and Repair/Liftgate Release Switch Replacement (Except Avalanche and Escalade EXT))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for liftgate control module replacement,
programming and setup
Manual Liftgate
DTC B2494 (Manual Liftgate)
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 B2494 00
- Liftgate Handle Switch Circuit
Diagnostic Fault Information
Circuit/System Description
The liftgate release switch is an input to the body control module (BCM). The BCM monitors the signal circuit and when the release switch is
activated the signal circuit voltage goes low. The BCM controls the liftgate release actuator through the liftgate latch release relay. When the
release switch signal is activated, the BCM enables the liftgate latch release relay by applying battery voltage to the liftgate latch release relay
supply circuit and the relay is energized when the BCM grounds the liftgate latch release relay control circuit. When the relay is energized battery
voltage is supplied to the liftgate release actuator through the liftgate release actuator control circuit.
Conditions for Running the DTC
The system voltage is 9-16 volts.
瀚慖f not the specified value, replace the liftgate handle switch.
3. Test for less than 2 ohms between the signal terminal A and the low reference terminal B with the switch in the closed position.
瀚慖f greater than the specified range, replace the liftgate handle switch.
Liftgate Close Switch
1. Ignition OFF, disconnect the harness connector at the liftgate close switch.
2. Test for infinite resistance between the signal terminal D and the low reference terminal A with the switch in the open position.
瀚慖f not the specified value, replace the liftgate close switch.
3. Test for less than 2 ohms between the signal terminal D and the low reference terminal A with the switch in the closed position.
瀚慖f greater than the specified range, replace the liftgate close switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Liftgate Release Switch Replacement (Except Avalanche and Escalade EXT) (See: Body and Frame/Doors, Hood and Trunk/Trunk /
Liftgate/Trunk / Liftgate Switch/Service and Repair/Liftgate Release Switch Replacement (Except Avalanche and Escalade EXT))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for liftgate control module replacement,
programming and setup
Manual Liftgate
DTC B2494 (Manual Liftgate)
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 B2494 00
- Liftgate Handle Switch Circuit
Diagnostic Fault Information
Circuit/System Description
The liftgate release switch is an input to the body control module (BCM). The BCM monitors the signal circuit and when the release switch is
activated the signal circuit voltage goes low. The BCM controls the liftgate release actuator through the liftgate latch release relay. When the
release switch signal is activated, the BCM enables the liftgate latch release relay by applying battery voltage to the liftgate latch release relay
supply circuit and the relay is energized when the BCM grounds the liftgate latch release relay control circuit. When the relay is energized battery
voltage is supplied to the liftgate release actuator through the liftgate release actuator control circuit.
Conditions for Running the DTC
The system voltage is 9-16 volts.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 598
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 598
The Liftgate Open/Close Signal circuit is active for greater than 10 minutes.
Action Taken When the DTC Sets
The liftgate open and close functions from the liftgate switches will be inoperative.
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 be a history DTC.
* A history DTC will clear after 50 ignition cycles.
Diagnostic Aids
Important: Before testing can be performed the liftgate must be opened. Refer to Opening the Liftgate Without Electrical Power (See:
Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Service and Repair/Procedures) for the appropriate procedure.
Whenever the LGM loses power or is disconnected, the ignition must be cycled OFF then ON in order to reactivate the LGM.
Reference Information
Schematic Reference
Liftgate Schematics (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Liftgate Description and Operation (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/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, observe the scan tool Liftgate Handle Sw. Status parameter while pressing and releasing the liftgate handle and liftgate close switches.
The value should change between Active and Inactive.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connectors at the liftgate handle and liftgate close switches.
2. Ignition ON, verify the scan tool Liftgate Handle Sw. Status parameter is Inactive.
瀚慖f not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the LGM.
3. Ignition OFF, connect the harness connector at the liftgate close switch.
4. Ignition ON, observe the scan tool Liftgate Handle Sw. Status parameter while pressing and releasing the liftgate close switch, the parameter
should change between Active and Inactive.
瀚慖f the value does not change, test or replace the liftgate close switch.
5. If all circuits test normal, test or replace the liftgate handle switch.
Component Testing
Liftgate Handle Switch
1. Ignition OFF, disconnect the harness connector at the liftgate handle switch.
2. Test for infinite resistance between the signal terminal A and the low reference terminal B with the switch in the open position.
The Liftgate Open/Close Signal circuit is active for greater than 10 minutes.
Action Taken When the DTC Sets
The liftgate open and close functions from the liftgate switches will be inoperative.
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 be a history DTC.
* A history DTC will clear after 50 ignition cycles.
Diagnostic Aids
Important: Before testing can be performed the liftgate must be opened. Refer to Opening the Liftgate Without Electrical Power (See:
Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Service and Repair/Procedures) for the appropriate procedure.
Whenever the LGM loses power or is disconnected, the ignition must be cycled OFF then ON in order to reactivate the LGM.
Reference Information
Schematic Reference
Liftgate Schematics (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Liftgate Description and Operation (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/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, observe the scan tool Liftgate Handle Sw. Status parameter while pressing and releasing the liftgate handle and liftgate close switches.
The value should change between Active and Inactive.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connectors at the liftgate handle and liftgate close switches.
2. Ignition ON, verify the scan tool Liftgate Handle Sw. Status parameter is Inactive.
瀚慖f not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the LGM.
3. Ignition OFF, connect the harness connector at the liftgate close switch.
4. Ignition ON, observe the scan tool Liftgate Handle Sw. Status parameter while pressing and releasing the liftgate close switch, the parameter
should change between Active and Inactive.
瀚慖f the value does not change, test or replace the liftgate close switch.
5. If all circuits test normal, test or replace the liftgate handle switch.
Component Testing
Liftgate Handle Switch
1. Ignition OFF, disconnect the harness connector at the liftgate handle switch.
2. Test for infinite resistance between the signal terminal A and the low reference terminal B with the switch in the open position.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 597
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 597
* Wireless Communication Interface Antenna Replacement (See: Accessories and Optional Equipment/Antenna/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for CIM replacement, setup, and programming
Power Liftgate
DTC B2494 (Power Liftgate)
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 B2494 02
- Liftgate Handle Switch Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The power liftgate button and exterior liftgate handle switch are parallel circuits and provide a single input to the liftgate module (LGM). The
liftgate switches are supplied voltage and share a common low reference circuit from the LGM. When the switch contacts close, the LGM detects
the voltage drop and commands the liftgate to open or close depending upon the position of the liftgate at the time.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
* Wireless Communication Interface Antenna Replacement (See: Accessories and Optional Equipment/Antenna/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for CIM replacement, setup, and programming
Power Liftgate
DTC B2494 (Power Liftgate)
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 B2494 02
- Liftgate Handle Switch Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The power liftgate button and exterior liftgate handle switch are parallel circuits and provide a single input to the liftgate module (LGM). The
liftgate switches are supplied voltage and share a common low reference circuit from the LGM. When the switch contacts close, the LGM detects
the voltage drop and commands the liftgate to open or close depending upon the position of the liftgate at the time.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
1-800-424-9153), or go to http://www.safercar.gov.2010 Cadillac Truck SRX AWD V6-3.0L Technical Service Bulletin # 10-08-45-002D Date: 100913
1-800-424-9153), or go to http://www.safercar.gov.2010 Cadillac Truck SRX AWD V6-3.0L Technical Service Bulletin # 10-08-45-002D Date: 100913
Electrical - Malfunction Indicator Lamp ON/Hard/No Start
TECHNICAL
Bulletin No.: 10-08-45-002D
Date: September 13, 2010
Subject: Malfunction Indicator Lamp (MIL) Illuminated, Hard/No Start, Water on Driver Front Floor, DTCs Set (Replace Inline Pass-Thru
Connector and Fuel Tank Wiring Harness as Needed)
Models:
2010 Cadillac SRX
Supercede:
This bulletin is being revised to add DTC information. Please discard Corporate Bulletin Number 10-08-45-002C (Section 08 - Body and
Accessories).
Condition
Some customers may comment on one or more of the following conditions:
- The engine is hard to start or will not start, due to low fuel pressure.
- Erratic fuel gauge operation.
- The malfunction indicator lamp (MIL) is illuminated.
- There is a water leak in the driver side front floor area.
Upon further investigation, one or more of the following DTCs may be set:
Evaporative Emissions System
- DTC P0442: Evaporative Emission System Small Leak Detected
- DTC P0446: Evaporative Emissions Vent System Performance
- DTC P0449: Evaporative Emission (EVAP) Vent Solenoid Control Circuit
- DTC P0455: Evaporative Emission System Large Leak Detected
- DTC P0496: Evaporative Emission (EVAP) System Flow During Non-Purge
- DTC P0497: Evaporative Emission (EVAP) System No Flow During Purge
- DTC P0498: Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit Low Voltage
- DTC P0499: Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit High Voltage
Fuel Tank Pressure Sensor
- DTC P0451: Fuel Tank Pressure Sensor Performance
- DTC P0452: Fuel Tank Pressure Sensor Circuit Low Voltage
- DTC P0453: Fuel Tank Pressure Sensor Circuit High Voltage
2010 Cadillac Truck SRX AWD V6-3.0L Page 241
- DTC P0454: Fuel Tank Pressure Sensor Intermittent
Fuel Pressure/Fuel Rail Pressure Sensor
- DTC P018B: Fuel Pressure Sensor Performance
- DTC P018C: Fuel Pressure Sensor Circuit Low Voltage
- DTC P018D: Fuel Pressure Sensor Circuit High Voltage
- DTC P0191: Fuel Rail Pressure Sensor Performance
- DTC P0192: Fuel Rail Pressure Sensor Circuit Low Voltage
- DTC P0193: Fuel Rail Pressure Sensor Circuit High Voltage
Cause
These conditions may be caused by water leaking into the vehicle causing terminal corrosion at inline connector X 350. This connector is not sealed
off from the inside of the vehicle and if a leak is present, water may eventually enter the connector causing the terminals to become corroded.
Correction
1. Disconnect the separate fuel tank harness connectors that connect to the underside of the X 350 connector. For the location of X 350, refer to
> Power and Signal Distribution > Wiring Systems and Power Management > Component Locator > Master Electrical Component List >
Code > X 350 in SI.
2. Inspect the terminals of these connectors for any corrosion, intermittent conditions and poor connections. Refer to testing for Intermittent
Conditions and Poor Connections in SI.
瀚慖f the terminals show any sign of corrosion, determine the source of the water leak. Repair the leak as necessary, Refer to > General
Information > Water Leaks > Diagnostic Information and Procedures in SI.
3. Replace the fuel tank harness to body harness pass-thru CONNECTOR with the new SEALED DESIGN CONNECTOR P/N 19178098.
4. Replace the connector terminals with terminals P/N 12047581 and P/N 12034047 found in the J 38125 Terminal Repair Kit. Refer to >
Power and Signal Distribution > Wiring Systems and Power Management > Diagnostic Information and Procedures in SI.
5. Inspect the mating fuel tank wiring harness connector terminals for any sign of corrosion.
瀚慖f the mating fuel tank wiring harness connector terminals show any sign of corrosion, replace the wiring harness.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the appropriate labor operation for the repair that was performed:.
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 596
Circuit/System Description
The Bluetooth (R) antenna is a small fixed antenna connected directly to the communication interface module (CIM) and is used to send and
receive signals from a Bluetooth (R) enabled cellular phone. The antenna utilizes no cabling and is not external to the vehicle.
Conditions for Running the DTC
* Ignition ON.
* Battery voltage must be between 9-16 V.
* The CIM tests the antenna once every second.
Conditions for Setting the DTC
B2485 02
The CIM detects a short to ground in the Bluetooth (R) antenna.
B2485 04
The CIM detects an open/high resistance in the Bluetooth (R) antenna.
Actions Taken When the DTC Sets
* The OnStar (R) status LED turns red.
* Bluetooth (R) functionality is disabled.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar 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 Testing
1. Verify the Bluetooth (R) antenna is properly connected to the CIM and is not damaged.
瀚慖f the antenna is disconnected or damaged, repair or replace as necessary.
2. Ignition ON, verify the DTC B2485 is not set.
瀚慖f the DTC is set, replace the Bluetooth (R) antenna. Clear the DTC and cycle the ignition OFF then back ON. If the DTC resets as
current, replace the CIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Circuit/System Description
The Bluetooth (R) antenna is a small fixed antenna connected directly to the communication interface module (CIM) and is used to send and
receive signals from a Bluetooth (R) enabled cellular phone. The antenna utilizes no cabling and is not external to the vehicle.
Conditions for Running the DTC
* Ignition ON.
* Battery voltage must be between 9-16 V.
* The CIM tests the antenna once every second.
Conditions for Setting the DTC
B2485 02
The CIM detects a short to ground in the Bluetooth (R) antenna.
B2485 04
The CIM detects an open/high resistance in the Bluetooth (R) antenna.
Actions Taken When the DTC Sets
* The OnStar (R) status LED turns red.
* Bluetooth (R) functionality is disabled.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar 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 Testing
1. Verify the Bluetooth (R) antenna is properly connected to the CIM and is not damaged.
瀚慖f the antenna is disconnected or damaged, repair or replace as necessary.
2. Ignition ON, verify the DTC B2485 is not set.
瀚慖f the DTC is set, replace the Bluetooth (R) antenna. Clear the DTC and cycle the ignition OFF then back ON. If the DTC resets as
current, replace the CIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 595
OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar 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 Testing
1. Ignition OFF, disconnect the harness connector at the A10 inside rearview mirror.
2. Test for less than 10 Ohms between the mirror ground circuit terminal 8 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, test for less than 1 V between the keypad signal circuit terminal 11 and ground.
瀚慖f greater than the specified range, test the keypad signal circuit for a short to voltage. If the circuit tests normal, replace the CIM.
4. Ignition OFF, test for 600k-800k Ohms between the keypad signal circuit terminal 11 and ground.
瀚慖f less than the specified range, test the keypad signal circuit for a short to ground. If the circuit tests normal, replace the CIM.
瀚慖f greater than the specified range, test the keypad signal circuit for an open/high resistance. If the circuit tests normal, replace the CIM.
5. Ignition ON, test for 9.5-10.5 V between the keypad supply voltage circuit terminal 12 and ground.
瀚慖f less than the specified range, test the supply voltage circuit for a short to ground or open/high resistance. If the circuit tests normal,
replace the CIM.
瀚慖f greater than the specified range, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the CIM.
6. If all circuits test normal, test or replace the button assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Inside Rearview Mirror Replacement (See: Body and Frame/Mirrors/Service and Repair/Inside Rearview Mirror Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for CIM replacement, setup, and programming
B2485
DTC B2485
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 B2485 02
- Wireless Communication Antenna Circuit Short to Ground
DTC B2485 04
- Wireless Communication Antenna Circuit Open Circuit
OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar 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 Testing
1. Ignition OFF, disconnect the harness connector at the A10 inside rearview mirror.
2. Test for less than 10 Ohms between the mirror ground circuit terminal 8 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, test for less than 1 V between the keypad signal circuit terminal 11 and ground.
瀚慖f greater than the specified range, test the keypad signal circuit for a short to voltage. If the circuit tests normal, replace the CIM.
4. Ignition OFF, test for 600k-800k Ohms between the keypad signal circuit terminal 11 and ground.
瀚慖f less than the specified range, test the keypad signal circuit for a short to ground. If the circuit tests normal, replace the CIM.
瀚慖f greater than the specified range, test the keypad signal circuit for an open/high resistance. If the circuit tests normal, replace the CIM.
5. Ignition ON, test for 9.5-10.5 V between the keypad supply voltage circuit terminal 12 and ground.
瀚慖f less than the specified range, test the supply voltage circuit for a short to ground or open/high resistance. If the circuit tests normal,
replace the CIM.
瀚慖f greater than the specified range, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the CIM.
6. If all circuits test normal, test or replace the button assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Inside Rearview Mirror Replacement (See: Body and Frame/Mirrors/Service and Repair/Inside Rearview Mirror Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for CIM replacement, setup, and programming
B2485
DTC B2485
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 B2485 02
- Wireless Communication Antenna Circuit Short to Ground
DTC B2485 04
- Wireless Communication Antenna Circuit Open Circuit
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 594
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 594
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B2476 04
- Cellular Phone Select Service Switch Open Circuit
DTC B2476 59
- Cellular Phone Select Service Switch Stuck Button
DTC B2482 00
- Cellular Phone Select Service Switch Range/Performance
Diagnostic Fault Information
Circuit/System Description
The OnStar(R) button assembly consists of 3 buttons, Call/Answer, OnStar(R) Call Center, and OnStar(R) Emergency. The communication
interface module (CIM) supplies the OnStar(R) button assembly with 10 V via the keypad supply voltage circuit. Each of the buttons, when
pressed, completes the circuit across a resistor allowing a specific voltage to be returned to the CIM over the keypad signal circuit. Depending upon
the voltage range returned, the CIM is able to identify which button has been activated.
Conditions for Running the DTC
* Ignition ON.
* Battery voltage must be between 9-16 V.
Conditions for Setting the DTC
B2476 04
The CIM detects an open/high resistance on the keypad supply voltage circuit.
B2482 and B2476 59
The CIM detects a valid signal on the keypad signal circuit for longer than 15 seconds. If one of the OnStar(R) buttons is held or stuck for 15
seconds or greater, the CIM will set this DTC.
Action Taken When the DTC Sets
* The OnStar(R) status LED turns red.
* No calls can be placed.
* The CIM will ignore all inputs from the OnStar(R) button assembly.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B2476 04
- Cellular Phone Select Service Switch Open Circuit
DTC B2476 59
- Cellular Phone Select Service Switch Stuck Button
DTC B2482 00
- Cellular Phone Select Service Switch Range/Performance
Diagnostic Fault Information
Circuit/System Description
The OnStar(R) button assembly consists of 3 buttons, Call/Answer, OnStar(R) Call Center, and OnStar(R) Emergency. The communication
interface module (CIM) supplies the OnStar(R) button assembly with 10 V via the keypad supply voltage circuit. Each of the buttons, when
pressed, completes the circuit across a resistor allowing a specific voltage to be returned to the CIM over the keypad signal circuit. Depending upon
the voltage range returned, the CIM is able to identify which button has been activated.
Conditions for Running the DTC
* Ignition ON.
* Battery voltage must be between 9-16 V.
Conditions for Setting the DTC
B2476 04
The CIM detects an open/high resistance on the keypad supply voltage circuit.
B2482 and B2476 59
The CIM detects a valid signal on the keypad signal circuit for longer than 15 seconds. If one of the OnStar(R) buttons is held or stuck for 15
seconds or greater, the CIM will set this DTC.
Action Taken When the DTC Sets
* The OnStar(R) status LED turns red.
* No calls can be placed.
* The CIM will ignore all inputs from the OnStar(R) button assembly.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 593
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 593
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar 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 Testing
1. Ignition OFF, disconnect the harness connector at the A10 inside rearview mirror.
2. Test for less than 10 Ohms between the mirror ground circuit terminal 8 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, test for less than 1 V between the keypad signal circuit terminal 11 and ground.
瀚慖f greater than the specified range, test the keypad signal circuit for a short to voltage. If the circuit tests normal, replace the CIM.
4. Ignition OFF, test for 600k-800k Ohms between the keypad signal circuit terminal 11 and ground.
瀚慖f less than the specified range, test the keypad signal circuit for a short to ground. If the circuit tests normal, replace the CIM.
瀚慖f greater than the specified range, test the keypad signal circuit for an open/high resistance. If the circuit tests normal, replace the CIM.
5. Ignition ON, test for 9.5-10.5 V between the keypad supply voltage circuit terminal 12 and ground.
瀚慖f less than the specified range, test the supply voltage circuit for a short to ground or open/high resistance. If the circuit tests normal,
replace the CIM.
瀚慖f greater than the specified range, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the CIM.
6. If all circuits test normal, test or replace the button assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Inside Rearview Mirror Replacement (See: Body and Frame/Mirrors/Service and Repair/Inside Rearview Mirror Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for CIM replacement, setup, and programming
B2482
DTC B2476 or B2482
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
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar 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 Testing
1. Ignition OFF, disconnect the harness connector at the A10 inside rearview mirror.
2. Test for less than 10 Ohms between the mirror ground circuit terminal 8 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, test for less than 1 V between the keypad signal circuit terminal 11 and ground.
瀚慖f greater than the specified range, test the keypad signal circuit for a short to voltage. If the circuit tests normal, replace the CIM.
4. Ignition OFF, test for 600k-800k Ohms between the keypad signal circuit terminal 11 and ground.
瀚慖f less than the specified range, test the keypad signal circuit for a short to ground. If the circuit tests normal, replace the CIM.
瀚慖f greater than the specified range, test the keypad signal circuit for an open/high resistance. If the circuit tests normal, replace the CIM.
5. Ignition ON, test for 9.5-10.5 V between the keypad supply voltage circuit terminal 12 and ground.
瀚慖f less than the specified range, test the supply voltage circuit for a short to ground or open/high resistance. If the circuit tests normal,
replace the CIM.
瀚慖f greater than the specified range, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the CIM.
6. If all circuits test normal, test or replace the button assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Inside Rearview Mirror Replacement (See: Body and Frame/Mirrors/Service and Repair/Inside Rearview Mirror Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for CIM replacement, setup, and programming
B2482
DTC B2476 or B2482
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
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1970
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1970
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).
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 components. The clutch PC
solenoid 5 regulates the transmission fluid pressure (TFP) to the 1-2-3-4 clutch regulator valve, which controls pressure to the 1-2-3-4 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.
Conditions for Running the DTC
P2723
* No DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207,
P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0716, P0717, P0722, P0723, or P182E.
* The ignition voltage is 8.6 volts or greater.
* The high side driver is enabled.
* The output speed is 16 RPM or greater, or the throttle position is 0.4 percent or greater.
* The throttle position signal is valid.
* The engine speed is greater than 400 RPM for 5 seconds.
* The transmission fluid temperature (TFT) is 0掳C (32掳F) or greater.
* 1-2-3-4 clutch is commanded ON.
P2724
* No DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207,
P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0716, P0717, P0722, P0723, or P182E.
* The ignition voltage is 8.6 volts or greater.
* The high side driver is enabled.
* The TFT is 0掳C (32掳F) or greater.
* The transmission output shaft speed is 350 RPM or greater.
* The transmission input speed is 200 RPM or greater.
* 1-2-3-4 clutch is commanded OFF.
Conditions for Setting the DTC
P2723
The TCM detects an incorrect on-coming clutch gear ratio, or flare, when the 1-2-3-4 clutch is commanded ON and the transmission input speed is
200 RPM or greater from the anticipated input shaft speed for 3.5 seconds, a total of 2 times in any one range that the 1-2-3-4 clutch is commanded
on.
P2724
The TCM detects an incorrect off-going clutch gear ratio, or tie-up, when the 1-2-3-4 clutch is commanded OFF and the transmission input speed is
40 RPM or less from the anticipated input shaft speed for 1.2 seconds, a total of 5 times.
Action Taken When the DTC Sets
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