2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 963
Circuit/System Verification
Ignition ON, use a scan tool to observe the EBCM BMC Primary Piston Position Sensor A and B parameter while applying and releasing the brake
pedal. The voltage should change between 0-5 V.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the brake master cylinder piston position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal 4 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the EBCM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
4. Verify the scan tool BMC Primary Piston Position Sensor A parameter is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the EBCM.
5. Install a 3A fused jumper wire between the signal circuit terminal 3 and the 5 V reference circuit terminal 2. Verify the scan tool BMC
Primary Piston Position Sensor A parameter is greater than 4.5 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
6. Verify the scan tool BMC Primary Piston Position Sensor B parameter is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the EBCM.
7. Install a 3A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 2. Verify the scan tool BMC
Primary Piston Position Sensor B parameter is greater than 4.5 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
8. If all circuits test normal, replace the brake master cylinder piston position sensor. If DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Master Cylinder Primary Piston Position Sensor Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Braking Sensor/Switch/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C120D
DTC C0201, C120D, or C120E
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 C0201 04
- Antilock Brake System (ABS) Enable Relay Contact Circuit Open
DTC C120D
- Traction Control Power Switch Circuit Open
Showing posts with label Circuit/System Verification. Show all posts
Showing posts with label Circuit/System Verification. Show all posts
Wednesday, December 18, 2019
Sunday, December 15, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 895
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 895
Circuit/System Verification
Note: The battery must be able to maintain a charge during this procedure. It is recommended that a charger/maintainer or equivalent be used to
maintain proper battery voltage during this procedure.
1. Verify that no other EBCM DTCs are set.
瀚慖f DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble
Code (DTC) List - Vehicle).
2. Ignition ON, engine OFF, using a scan tool access the EBCM, Module Setup screen, and perform the EBCM Relearn. The relearn procedure
will verify valve and pressure sensor calibrations are correct.
Note: To ensure the complete brake modulator and high pressure accumulator pressure relief procedure is allowed to occur; the brake
controller must see one brake pedal apply with the engine running followed by a proper shutdown without applying the brake pedal.
3. Transmission in PARK, engine running, apply and release the brake pedal.
Note: The ignition must transition to the OFF position without pausing at ACCESSORY and without applying the brake pedal. This ensures
that the brake modulator and high pressure accumulator relief occurs. This process will take approximately 1-2 minutes.
4. Ignition OFF, key removed from the ignition, wait 2 minutes.
Note: The ignition must remain in the ON position with the engine OFF during the following steps.
5. Ignition ON, brake pedal released, verify the following EBCM scan tool parameters are within the specified range:
* BMC Prim. Piston Pos. Sen. 5 V Reference Position - Between 4.75-5.25 V
* BMC Primary Piston Position Sensor A - Between 0.4-0.8 V
* BMC Primary Piston Position Sensor B - Between 4.2-4.6 V
瀚慖f any of the parameters are not within the specified range, refer to DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or
C12F8 (See: C Code Charts/C0277/Antilock Brake System - Hybrid (HP2)).
6. Brakes not applied, verify the following EBCM scan tool parameters are within the specified range:
* Master Cylinder Pressure Sensor Input - Less than 100 kPa (15 psi)
* Rear Brake Pressure Sensor - Less than 100 kPa (15 psi)
* Brake Pressure Sensor Input - Less than 100 kPa (15 psi)
* Accum. Pressure Sensor - Less than 800 kPa (116 psi)
瀚慖f any of the parameters are not within the specified range, replace the brake pressure modulator valve.
7. Perform a hydraulic check, refer to Brake Hydraulic and Assist System Diagnosis (Two-mode Hybrid) (See: Brakes and Traction
Control/Hydraulic System/Testing and Inspection/Component Tests and General Diagnostics/Brake Hydraulic and Assist System Diagnosis
(Two-mode Hybrid)).
8. If the Brake Hydraulic and Assist System tests normal, replace the brake pressure modulator valve and verify DTC does not reset. If the DTC
resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, relearn, and
programming
C12FF
DTC C0299 or C12FF
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.
Circuit/System Verification
Note: The battery must be able to maintain a charge during this procedure. It is recommended that a charger/maintainer or equivalent be used to
maintain proper battery voltage during this procedure.
1. Verify that no other EBCM DTCs are set.
瀚慖f DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble
Code (DTC) List - Vehicle).
2. Ignition ON, engine OFF, using a scan tool access the EBCM, Module Setup screen, and perform the EBCM Relearn. The relearn procedure
will verify valve and pressure sensor calibrations are correct.
Note: To ensure the complete brake modulator and high pressure accumulator pressure relief procedure is allowed to occur; the brake
controller must see one brake pedal apply with the engine running followed by a proper shutdown without applying the brake pedal.
3. Transmission in PARK, engine running, apply and release the brake pedal.
Note: The ignition must transition to the OFF position without pausing at ACCESSORY and without applying the brake pedal. This ensures
that the brake modulator and high pressure accumulator relief occurs. This process will take approximately 1-2 minutes.
4. Ignition OFF, key removed from the ignition, wait 2 minutes.
Note: The ignition must remain in the ON position with the engine OFF during the following steps.
5. Ignition ON, brake pedal released, verify the following EBCM scan tool parameters are within the specified range:
* BMC Prim. Piston Pos. Sen. 5 V Reference Position - Between 4.75-5.25 V
* BMC Primary Piston Position Sensor A - Between 0.4-0.8 V
* BMC Primary Piston Position Sensor B - Between 4.2-4.6 V
瀚慖f any of the parameters are not within the specified range, refer to DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or
C12F8 (See: C Code Charts/C0277/Antilock Brake System - Hybrid (HP2)).
6. Brakes not applied, verify the following EBCM scan tool parameters are within the specified range:
* Master Cylinder Pressure Sensor Input - Less than 100 kPa (15 psi)
* Rear Brake Pressure Sensor - Less than 100 kPa (15 psi)
* Brake Pressure Sensor Input - Less than 100 kPa (15 psi)
* Accum. Pressure Sensor - Less than 800 kPa (116 psi)
瀚慖f any of the parameters are not within the specified range, replace the brake pressure modulator valve.
7. Perform a hydraulic check, refer to Brake Hydraulic and Assist System Diagnosis (Two-mode Hybrid) (See: Brakes and Traction
Control/Hydraulic System/Testing and Inspection/Component Tests and General Diagnostics/Brake Hydraulic and Assist System Diagnosis
(Two-mode Hybrid)).
8. If the Brake Hydraulic and Assist System tests normal, replace the brake pressure modulator valve and verify DTC does not reset. If the DTC
resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, relearn, and
programming
C12FF
DTC C0299 or C12FF
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.
Tuesday, December 10, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 796
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 796
Circuit/System Verification
1. Using a scan tool, perform the EBCM, Module Setup, EBCM Relearn.
2. Verify that DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB or C12F7 is not set.
瀚慖f the DTC is set replace brake pressure modulator valve assembly. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, programming and setup
C12CC
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
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 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
Circuit/System Verification
1. Using a scan tool, perform the EBCM, Module Setup, EBCM Relearn.
2. Verify that DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB or C12F7 is not set.
瀚慖f the DTC is set replace brake pressure modulator valve assembly. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, programming and setup
C12CC
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
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 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
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 787
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 787
Circuit/System Verification
1. Using a scan tool, perform the EBCM, Module Setup, EBCM Relearn.
2. Verify that DTC C012A, C128B, C128E, C12B2, C12B3, or C12B4 is not set.
瀚慖f the DTC is set replace brake pressure modulator valve assembly. If the DTC resets, replace EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C12B3
DTC C012A, C128B, C128E, or C12B2-C12B4
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 C012A 00
- Master Cylinder Pressure Sensor
DTC C128E
- Master Cylinder Pressure Sensor
DTC C012A 01
- Master Cylinder Pressure Sensor Short to Battery
DTC C12B3
- Master Cylinder Pressure Sensor Short to Battery
DTC C012A 06
- Master Cylinder Pressure Sensor Short to Ground or Open
DTC C12B2
- Master Cylinder Pressure Sensor Short to Ground or Open
DTC C012A 11
- Master Cylinder Pressure Sensor Above Maximum Threshold
DTC C128B
- Master Cylinder Pressure Sensor Above Maximum Threshold
DTC C012A 0F
- Master Cylinder Pressure Sensor Erratic
DTC C12B4
- Master Cylinder Pressure Sensor Erratic
Circuit/System Description
The electronic brake control module (EBCM) uses input from the master cylinder pressure sensor for more accurate control during a vehicle
stability enhancement system event. The master cylinder pressure sensor is internal to the brake pressure modulator valve.
Conditions for Running the DTC
Circuit/System Verification
1. Using a scan tool, perform the EBCM, Module Setup, EBCM Relearn.
2. Verify that DTC C012A, C128B, C128E, C12B2, C12B3, or C12B4 is not set.
瀚慖f the DTC is set replace brake pressure modulator valve assembly. If the DTC resets, replace EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C12B3
DTC C012A, C128B, C128E, or C12B2-C12B4
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 C012A 00
- Master Cylinder Pressure Sensor
DTC C128E
- Master Cylinder Pressure Sensor
DTC C012A 01
- Master Cylinder Pressure Sensor Short to Battery
DTC C12B3
- Master Cylinder Pressure Sensor Short to Battery
DTC C012A 06
- Master Cylinder Pressure Sensor Short to Ground or Open
DTC C12B2
- Master Cylinder Pressure Sensor Short to Ground or Open
DTC C012A 11
- Master Cylinder Pressure Sensor Above Maximum Threshold
DTC C128B
- Master Cylinder Pressure Sensor Above Maximum Threshold
DTC C012A 0F
- Master Cylinder Pressure Sensor Erratic
DTC C12B4
- Master Cylinder Pressure Sensor Erratic
Circuit/System Description
The electronic brake control module (EBCM) uses input from the master cylinder pressure sensor for more accurate control during a vehicle
stability enhancement system event. The master cylinder pressure sensor is internal to the brake pressure modulator valve.
Conditions for Running the DTC
Thursday, December 5, 2019
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 675
Circuit/System Verification
Verify DTC B3109, B3110, B3111, or B3112 are not set.
If any of the DTCs are set, replace the battery in the appropriate keyless entry transmitter. Operate the transmitter 3 consecutive times. If the DTC
resets, replace the keyless entry transmitter.
Repair Instructions
Important: This vehicle may be equipped with the 2-Way Advanced Remote Start System. Vehicle equipped with the 2-Way Advanced
Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing
the 2-Way Advanced Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the 2-Way
Advanced Remote Start System can be found in the Accessory section of the parts manual.
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Remote Control Door Lock Transmitter Programming (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless
Entry/Keyless Entry Transmitter/Testing and Inspection)
B3111
DTC B3109, B3110, B3111, or B3112
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 B3109 00
- Keyless Entry Transmitter 1 Low Battery
DTC B3110 00
- Keyless Entry Transmitter 2 Low Battery
DTC B3111 00
- Keyless Entry Transmitter 3 Low Battery
DTC B3112 00
- Keyless Entry Transmitter 4 Low Battery
Circuit/System Description
With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the remote control
door lock receiver (RCDLR) along with the commanded keyless entry function.
Conditions for Running the DTC
A keyless transmitter button is pressed.
Conditions for Setting the DTC
The DTC sets after 3 consecutive low battery signals from the same programmed transmitter.
Action Taken When the DTC Sets
The keyless entry system is inoperative.
Conditions for Clearing the DTC
The DTC is cleared when a normal transmitter voltage signal is received from the programmed transmitter that set the DTC.
Circuit/System Verification
Verify DTC B3109, B3110, B3111, or B3112 are not set.
If any of the DTCs are set, replace the battery in the appropriate keyless entry transmitter. Operate the transmitter 3 consecutive times. If the DTC
resets, replace the keyless entry transmitter.
Repair Instructions
Important: This vehicle may be equipped with the 2-Way Advanced Remote Start System. Vehicle equipped with the 2-Way Advanced
Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing
the 2-Way Advanced Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the 2-Way
Advanced Remote Start System can be found in the Accessory section of the parts manual.
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Remote Control Door Lock Transmitter Programming (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless
Entry/Keyless Entry Transmitter/Testing and Inspection)
B3111
DTC B3109, B3110, B3111, or B3112
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 B3109 00
- Keyless Entry Transmitter 1 Low Battery
DTC B3110 00
- Keyless Entry Transmitter 2 Low Battery
DTC B3111 00
- Keyless Entry Transmitter 3 Low Battery
DTC B3112 00
- Keyless Entry Transmitter 4 Low Battery
Circuit/System Description
With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the remote control
door lock receiver (RCDLR) along with the commanded keyless entry function.
Conditions for Running the DTC
A keyless transmitter button is pressed.
Conditions for Setting the DTC
The DTC sets after 3 consecutive low battery signals from the same programmed transmitter.
Action Taken When the DTC Sets
The keyless entry system is inoperative.
Conditions for Clearing the DTC
The DTC is cleared when a normal transmitter voltage signal is received from the programmed transmitter that set the DTC.
Sunday, November 24, 2019
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 453
Circuit/System Verification
1. Verify that the following DTCs are not set: U1814, B1428.
瀚慖f either of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. With a scan tool, access Body Control Module, Power Mode data display list and compare all parameters listed with the corresponding
ignition key position. The PMM Power Mode Parameters table below illustrates the correct state of these input parameters (circuits) in
correspondence to the ignition switch position. The circuits which the individual parameters are related to are in parentheses.
Circuit/System Testing
Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
1. Inspect for an open Ign Switch fuse. The fuse should be OK.
瀚慖f the fuse is open, test the following circuits for a short to ground, if all circuits test OK, replace the BCM.
* Battery positive voltage of the ignition switch
* Accessory voltage
* Off/Run/Crank voltage
* Ignition 1 voltage
* Accessory wakeup serial data (BCM output)
* Run/crank ignition 1 voltage (BCM output)
2. Disconnect the harness connector at the ignition switch.
3. Verify that a test lamp illuminates between the B+ circuit terminal 4 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
Note: The ignition switch component test must be preformed before proceeding with this test to verify the integrity of the switch.
4. Perform the ignition switch component test. The test should pass.
瀚慖f the ignition switch fails, replace the ignition switch.
5. Ignition OFF, disconnect the X1 harness connector at the BCM, test for less than 1.0 volt between the following circuit terminals of the BCM
and ground.
* Ignition key resistor signal terminal 4
* Off/Run/Crank voltage terminal 2
* Accessory voltage terminal 21
* Ignition 1 voltage terminal 14
瀚慖f greater than specified, test the circuit for a short to voltage.
6. Test for less than 1.0 ohm of resistance between the BCM and the ignition switch on the following circuit terminals.
* Ignition key resistor signal, BCM terminal 4 and ignition switch terminal 6
* Off/Run/Crank voltage, BCM terminal 2 and ignition switch terminal 5
* Accessory voltage, BCM terminal 21 and ignition switch terminal 3
* Ignition 1 voltage, BCM terminal 14 and ignition switch terminal 2
瀚慖f greater than specified, repair the circuit for open/high resistance
7. Test for infinite resistance between the ignition key resistor signal circuit terminal 4 of the BCM and ground.
Circuit/System Verification
1. Verify that the following DTCs are not set: U1814, B1428.
瀚慖f either of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. With a scan tool, access Body Control Module, Power Mode data display list and compare all parameters listed with the corresponding
ignition key position. The PMM Power Mode Parameters table below illustrates the correct state of these input parameters (circuits) in
correspondence to the ignition switch position. The circuits which the individual parameters are related to are in parentheses.
Circuit/System Testing
Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
1. Inspect for an open Ign Switch fuse. The fuse should be OK.
瀚慖f the fuse is open, test the following circuits for a short to ground, if all circuits test OK, replace the BCM.
* Battery positive voltage of the ignition switch
* Accessory voltage
* Off/Run/Crank voltage
* Ignition 1 voltage
* Accessory wakeup serial data (BCM output)
* Run/crank ignition 1 voltage (BCM output)
2. Disconnect the harness connector at the ignition switch.
3. Verify that a test lamp illuminates between the B+ circuit terminal 4 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
Note: The ignition switch component test must be preformed before proceeding with this test to verify the integrity of the switch.
4. Perform the ignition switch component test. The test should pass.
瀚慖f the ignition switch fails, replace the ignition switch.
5. Ignition OFF, disconnect the X1 harness connector at the BCM, test for less than 1.0 volt between the following circuit terminals of the BCM
and ground.
* Ignition key resistor signal terminal 4
* Off/Run/Crank voltage terminal 2
* Accessory voltage terminal 21
* Ignition 1 voltage terminal 14
瀚慖f greater than specified, test the circuit for a short to voltage.
6. Test for less than 1.0 ohm of resistance between the BCM and the ignition switch on the following circuit terminals.
* Ignition key resistor signal, BCM terminal 4 and ignition switch terminal 6
* Off/Run/Crank voltage, BCM terminal 2 and ignition switch terminal 5
* Accessory voltage, BCM terminal 21 and ignition switch terminal 3
* Ignition 1 voltage, BCM terminal 14 and ignition switch terminal 2
瀚慖f greater than specified, repair the circuit for open/high resistance
7. Test for infinite resistance between the ignition key resistor signal circuit terminal 4 of the BCM and ground.
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 429
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 429
Circuit/System Verification
1. Verify that the following DTCs are not set: U1814, B1428.
瀚慖f either of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. With a scan tool, access BCM, Power Mode data display list and compare all parameters listed with the corresponding ignition key position.
The PMM Power Mode Parameters table below illustrates the correct state of these input parameters (circuits) in correspondence to the
ignition switch position. The circuits which the individual parameters are related to are in parentheses.
Circuit/System Testing
Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
1. Inspect for an open B+ fuse. The fuse should be OK.
瀚慖f the fuse is open, test the following circuits for a short to ground, if all circuits test OK, replace the BCM.
* B+ to the ignition switch
* Accessory voltage
* Off/Run/Crank voltage
* Ignition 1 voltage
* Accessory wakeup serial data (BCM output)
* Run/crank ignition 1 voltage (BCM output)
2. Disconnect the harness connector at the ignition switch.
3. Verify that a test lamp illuminates between the B+ circuit terminal 4 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
Note: The ignition switch component test must be preformed before proceeding with this test to verify the integrity of the switch.
4. Perform the ignition switch component test. The test should pass.
瀚慖f the ignition switch fails, replace the ignition switch.
5. Ignition OFF, disconnect the X1 harness connector at the BCM, test for less than 1.0 volt between the following circuit terminals of the BCM
and ground.
* Ignition key resistor signal terminal 4
* Off/Run/Crank voltage terminal 2
* Accessory voltage terminal 21
* Ignition 1 voltage terminal 14
瀚慖f greater than specified, test the circuit for a short to voltage.
6. Test for less than 1.0 ohm of resistance between the BCM and the ignition switch on the following circuit terminals.
* Ignition key resistor signal, BCM terminal 4 and ignition switch terminal 6
* Off/Run/Crank voltage, BCM terminal 2 and ignition switch terminal 5
* Accessory voltage, BCM terminal 21 and ignition switch terminal 3
* Ignition 1 voltage, BCM terminal 14 and ignition switch terminal 2
瀚慖f greater than specified, repair the circuit for open/high resistance
7. Test for infinite resistance between the ignition key resistor signal circuit terminal 4 of the BCM and ground.
Circuit/System Verification
1. Verify that the following DTCs are not set: U1814, B1428.
瀚慖f either of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. With a scan tool, access BCM, Power Mode data display list and compare all parameters listed with the corresponding ignition key position.
The PMM Power Mode Parameters table below illustrates the correct state of these input parameters (circuits) in correspondence to the
ignition switch position. The circuits which the individual parameters are related to are in parentheses.
Circuit/System Testing
Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
1. Inspect for an open B+ fuse. The fuse should be OK.
瀚慖f the fuse is open, test the following circuits for a short to ground, if all circuits test OK, replace the BCM.
* B+ to the ignition switch
* Accessory voltage
* Off/Run/Crank voltage
* Ignition 1 voltage
* Accessory wakeup serial data (BCM output)
* Run/crank ignition 1 voltage (BCM output)
2. Disconnect the harness connector at the ignition switch.
3. Verify that a test lamp illuminates between the B+ circuit terminal 4 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
Note: The ignition switch component test must be preformed before proceeding with this test to verify the integrity of the switch.
4. Perform the ignition switch component test. The test should pass.
瀚慖f the ignition switch fails, replace the ignition switch.
5. Ignition OFF, disconnect the X1 harness connector at the BCM, test for less than 1.0 volt between the following circuit terminals of the BCM
and ground.
* Ignition key resistor signal terminal 4
* Off/Run/Crank voltage terminal 2
* Accessory voltage terminal 21
* Ignition 1 voltage terminal 14
瀚慖f greater than specified, test the circuit for a short to voltage.
6. Test for less than 1.0 ohm of resistance between the BCM and the ignition switch on the following circuit terminals.
* Ignition key resistor signal, BCM terminal 4 and ignition switch terminal 6
* Off/Run/Crank voltage, BCM terminal 2 and ignition switch terminal 5
* Accessory voltage, BCM terminal 21 and ignition switch terminal 3
* Ignition 1 voltage, BCM terminal 14 and ignition switch terminal 2
瀚慖f greater than specified, repair the circuit for open/high resistance
7. Test for infinite resistance between the ignition key resistor signal circuit terminal 4 of the BCM and ground.
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 388
Circuit/System Verification
Radio ON, adjust the fade and balance controls on the radio to test all four channels individually. Each of the four channels should produce clear
and even sound.
Circuit/System Testing
Important: This DTC can be set by either the radio or the amplifier. If the DTC was set by the radio, diagnose the appropriate audio
output circuits to the speakers or the low level inputs to the amplifier (if equipped). If the DTC was set by the amplifier, diagnose audio
output signals to the speakers from the amplifier. If equipped with rear seat audio (RSA) (U42), the RSA must be turned off to perform
proper speaker testing.
Without Amplifier
1. Ignition OFF, disconnect the harness connector at the appropriate speaker.
2. Radio ON, test for 5.0-7.5 volts between the signal circuit terminal A and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
3. Test for 5.0-7.5 volts between the signal circuit terminal B and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
4. If all circuits test normal, replace the speaker.
DTC Set By The Radio UQA
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with U42
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
Circuit/System Verification
Radio ON, adjust the fade and balance controls on the radio to test all four channels individually. Each of the four channels should produce clear
and even sound.
Circuit/System Testing
Important: This DTC can be set by either the radio or the amplifier. If the DTC was set by the radio, diagnose the appropriate audio
output circuits to the speakers or the low level inputs to the amplifier (if equipped). If the DTC was set by the amplifier, diagnose audio
output signals to the speakers from the amplifier. If equipped with rear seat audio (RSA) (U42), the RSA must be turned off to perform
proper speaker testing.
Without Amplifier
1. Ignition OFF, disconnect the harness connector at the appropriate speaker.
2. Radio ON, test for 5.0-7.5 volts between the signal circuit terminal A and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
3. Test for 5.0-7.5 volts between the signal circuit terminal B and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
4. If all circuits test normal, replace the speaker.
DTC Set By The Radio UQA
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with U42
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
Wednesday, November 20, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 351
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 351
Circuit/System Verification
Verify that DTC B1015 is not set.
If the DTC is set, program the object alarm module. Refer to Object Alarm Module Programming and Setup (See: Accessories and Optional
Equipment/Collision Avoidance and Parking Assist Systems/Parking Assist Control Module/Testing and Inspection). If the DTC resets, replace the
object alarm module.
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 Object Alarm Module replacement, setup, and
programming.
Supplemental Inflatable Restraints
DTC B1019
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 B1019 00
- System Configuration Error
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) monitors the number of safety components installed on the vehicle. When the
ignition is turned ON, the SDM evaluates the number of safety components installed and compares it to the number of components the SDM
expects to see on the vehicle with its current calibration. If there is a mismatch between detected components and the components programmed with
the SDM calibration, DTC B1019 will set. The components (if equipped) that the SDM will detect include inflatable restraint deployment loops,
impact sensors, passenger presence system components, seat position sensors, disable switches, and seat belt switches.
Conditions for Running the DTC
Ignition voltage is between 9-16 V.
Conditions for Setting the DTC
The setup for the SDM has not been completed and the SDM does not detect the correct number of sensors or deployment loops than is expected
with this calibration.
Action Taken When the DTC Sets
* The SDM requests the instrument cluster to illuminate the AIR BAG warning indicator.
* The DTC must be cleared before running the setup SDM.
* Air bag indicator will continue to flash until SDM setup procedure is complete.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
Diagnostic Aids
The SDM scan tool deployment loop and impact sensor data will match what the SDM has been programmed to expect to see on the vehicle. B1019
DTC will set if a deployment loop or impact sensor is added or removed from the system.
DTC B1019 will set when an open/high resistance DTC sets for a deployment loop or impact sensor. This causes mismatch between the learned and
actual components connected to the SDM.
Circuit/System Verification
Verify that DTC B1015 is not set.
If the DTC is set, program the object alarm module. Refer to Object Alarm Module Programming and Setup (See: Accessories and Optional
Equipment/Collision Avoidance and Parking Assist Systems/Parking Assist Control Module/Testing and Inspection). If the DTC resets, replace the
object alarm module.
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 Object Alarm Module replacement, setup, and
programming.
Supplemental Inflatable Restraints
DTC B1019
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 B1019 00
- System Configuration Error
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) monitors the number of safety components installed on the vehicle. When the
ignition is turned ON, the SDM evaluates the number of safety components installed and compares it to the number of components the SDM
expects to see on the vehicle with its current calibration. If there is a mismatch between detected components and the components programmed with
the SDM calibration, DTC B1019 will set. The components (if equipped) that the SDM will detect include inflatable restraint deployment loops,
impact sensors, passenger presence system components, seat position sensors, disable switches, and seat belt switches.
Conditions for Running the DTC
Ignition voltage is between 9-16 V.
Conditions for Setting the DTC
The setup for the SDM has not been completed and the SDM does not detect the correct number of sensors or deployment loops than is expected
with this calibration.
Action Taken When the DTC Sets
* The SDM requests the instrument cluster to illuminate the AIR BAG warning indicator.
* The DTC must be cleared before running the setup SDM.
* Air bag indicator will continue to flash until SDM setup procedure is complete.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
Diagnostic Aids
The SDM scan tool deployment loop and impact sensor data will match what the SDM has been programmed to expect to see on the vehicle. B1019
DTC will set if a deployment loop or impact sensor is added or removed from the system.
DTC B1019 will set when an open/high resistance DTC sets for a deployment loop or impact sensor. This causes mismatch between the learned and
actual components connected to the SDM.
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 207
Circuit/System Verification
Important:
* When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion in the following requires
repair or replacement of the affected component/connector.
* PPS module
* SDM module
* PPS module harness connector
* SDM wiring harness connector
1. Ignition ON, verify that DTC B0081 is the only DTC set in the SDM or PPS module.
瀚慖f any other DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Verify DTC B0081 0F, DTC B0081 3A, DTC B0081 39, or DTC B0081 71 is not set in the SDM. If any of these DTCs set in the SDM
diagnose the following:
* SDM DTC B0081 0F:
瀚慖f DTC B0081 0F sets in the SDM then the PPS module will set DTC B0081 4B or DTC B0081 5A. Refer to step #3 and diagnose the
PPS module DTC's. By diagnosing these two DTC's in the PPS module, DTC B0081 0F will be fixed in the SDM.
* SDM DTC B0081 3A:
瀚慐ither an incorrect replacement PPS module or SDM was placed in this vehicle. Check and make sure the part #'s are correct for each
module. If both part #'s are correct clear this DTC and see if DTC B0081 3A resets as a current DTC. If DTC B0081 3A resets then
replace the PPS module. Clear DTCs again and check if DTC B0081 3A sets as current again. If DTC B0081 3A sets again then
replace the SDM.
* SDM DTC B0081 39:
瀚慖f DTC B0081 39 sets in the SDM then replace the PPS module.
* SDM DTC B0081 71:
瀚慖f DTC B0081 71 sets in the SDM check and see if the SDM also sets DTC U0170. If DTC U0170 is set in the SDM then diagnose
DTC U0170. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle). If DTC U0170 is not set in the SDM then check the connections at the SDM and PPS module.
Clear DTC's and check if DTC B0081 71 sets as current. If DTC B0081 71 sets as current again then replace the PPS module.
3. Verify DTC B0081 4B, or DTC B0081 5A is not set in the PPS module. If either of these DTCs set in the PPS module diagnose the
following:
* PPS DTC B0081 4B:
瀚慖f DTC B0081 4B sets in the PPS module if the correct calibration was not learned by the PPS module. Perform the Passenger
Presence System Rezeroing procedure. Refer to Passenger Presence System Rezeroing (Tahoe Hybrid and Yukon Hybrid) (See:
Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Programming and Relearning/Passenger Presence System
Rezeroing (Tahoe Hybrid and Yukon Hybrid)).
* PPS DTC B0081 5A:
瀚慖f DTC DTC B0081 5A sets in the PPS module check the connections at the SDM and PPS module. Clear the DTC's and check if
DTC B0081 5A sets again in the PPS module. If DTC B0081 5A sets again replace the PPS module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PPS module and SDM replacement, setup, and
Circuit/System Verification
Important:
* When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion in the following requires
repair or replacement of the affected component/connector.
* PPS module
* SDM module
* PPS module harness connector
* SDM wiring harness connector
1. Ignition ON, verify that DTC B0081 is the only DTC set in the SDM or PPS module.
瀚慖f any other DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Verify DTC B0081 0F, DTC B0081 3A, DTC B0081 39, or DTC B0081 71 is not set in the SDM. If any of these DTCs set in the SDM
diagnose the following:
* SDM DTC B0081 0F:
瀚慖f DTC B0081 0F sets in the SDM then the PPS module will set DTC B0081 4B or DTC B0081 5A. Refer to step #3 and diagnose the
PPS module DTC's. By diagnosing these two DTC's in the PPS module, DTC B0081 0F will be fixed in the SDM.
* SDM DTC B0081 3A:
瀚慐ither an incorrect replacement PPS module or SDM was placed in this vehicle. Check and make sure the part #'s are correct for each
module. If both part #'s are correct clear this DTC and see if DTC B0081 3A resets as a current DTC. If DTC B0081 3A resets then
replace the PPS module. Clear DTCs again and check if DTC B0081 3A sets as current again. If DTC B0081 3A sets again then
replace the SDM.
* SDM DTC B0081 39:
瀚慖f DTC B0081 39 sets in the SDM then replace the PPS module.
* SDM DTC B0081 71:
瀚慖f DTC B0081 71 sets in the SDM check and see if the SDM also sets DTC U0170. If DTC U0170 is set in the SDM then diagnose
DTC U0170. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle). If DTC U0170 is not set in the SDM then check the connections at the SDM and PPS module.
Clear DTC's and check if DTC B0081 71 sets as current. If DTC B0081 71 sets as current again then replace the PPS module.
3. Verify DTC B0081 4B, or DTC B0081 5A is not set in the PPS module. If either of these DTCs set in the PPS module diagnose the
following:
* PPS DTC B0081 4B:
瀚慖f DTC B0081 4B sets in the PPS module if the correct calibration was not learned by the PPS module. Perform the Passenger
Presence System Rezeroing procedure. Refer to Passenger Presence System Rezeroing (Tahoe Hybrid and Yukon Hybrid) (See:
Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Programming and Relearning/Passenger Presence System
Rezeroing (Tahoe Hybrid and Yukon Hybrid)).
* PPS DTC B0081 5A:
瀚慖f DTC DTC B0081 5A sets in the PPS module check the connections at the SDM and PPS module. Clear the DTC's and check if
DTC B0081 5A sets again in the PPS module. If DTC B0081 5A sets again replace the PPS module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PPS module and SDM replacement, setup, and
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