2010 Cadillac Truck SRX AWD V6-3.0L Page 715

2010 Cadillac Truck SRX AWD V6-3.0L Page 715

* 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 B3884 02

- Center High Mounted Brake Lamp Circuit Short to Ground

DTC B3884 04

- Center High Mounted Brake Lamp Circuit Open

Diagnostic Fault Information

Circuit/System Description

The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position sensor provides an

analog voltage signal to the body control module (BCM). The BCM will apply battery voltage to the right, left and center stop lamp control circuits.

Conditions for Running the DTC

The brakes are applied.

Conditions for Setting the DTC

B3884 02

The BCM detects a short to ground on the center high mounted brake lamp control circuit

B3884 04

The BCM detects an open/high resistance on the center high mounted brake lamp control circuit

Action Taken When the DTC Sets

The center high mounted brake lamp will not illuminate.

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.

Reference Information

Schematic Reference

Exterior Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Exterior Lights Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Exterior Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Exterior Lights Schematics)

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

2010 Cadillac Truck SRX AWD V6-3.0L Page 752

2010 Cadillac Truck SRX AWD V6-3.0L Page 752

B3984

DTC B3984

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 B3984 00

- Device 1 Environment Identifier Not Programmable

Circuit/System Description

When certain modules are programmed and configured during installation, the module learns a specific environment identifier which is unique to

the vehicle. The environment identifier is used to prevent the swapping modules between vehicles. The body control module (BCM) is the keeper

of the environment identifier. The instrument cluster, electronic brake control module (EBCM), HVAC control module, sensing and diagnostic

module (SDM), engine control module (ECM), and steering column lock control module, if equipped, each learn the environment identifier during

their configuration process. During vehicle operation, each of these modules compare their environment identifier to that of the BCM. If the

identifiers match, vehicle starting is allowed. If an environment identifier does not match, vehicle starting is disabled.

Conditions for Running the DTC

Ignition is in the ACCESSORY or RUN position.

Conditions for Setting the DTC

An incorrect environment identifier is programmed or no environment identifier is programmed.

Action Taken When the DTC Sets

* The security indicator in the instrument cluster will illuminate.

* Vehicle starting will be disabled.

Conditions for Clearing the DTC

A current DTC will be cleared when the module learns a correct environment identifier.

Reference Information

Schematic Reference

Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer

Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and

Operation/Immobilizer)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

2010 Cadillac Truck SRX AWD V6-3.0L Page 1500

2010 Cadillac Truck SRX AWD V6-3.0L Page 1500

for purge valve.

4. Command the evaporative emission canister purge solenoid valve to 50 percent with a scan tool, or the evaporative emission canister vent

solenoid valve ON and OFF. The test lamp should respond to the command.

瀚慖f the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 ECM.

瀚慖f the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace

the K20 ECM.

5. If all circuits test normal, replace the appropriate solenoid valve.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Evaporative Emission Canister Purge Solenoid Valve Replacement (LF1) (See: Powertrain Management/Emission Control

Systems/Evaporative Emissions System/Canister Purge Solenoid/Service and Repair)Evaporative Emission Canister Purge Solenoid Valve

Replacement (LAU) (See: Powertrain Management/Emission Control Systems/Evaporative Emissions System/Canister Purge

Solenoid/Service and Repair)

* Evaporative Emission Canister Vent Solenoid Valve Replacement (NT7, NU5) (See: Powertrain Management/Emission Control

Systems/Evaporative Emissions System/Evaporative Emission Control Canister/Canister Vent Valve/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0451

DTC P0451-P0454 (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

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

DTC P0454

- Fuel Tank Pressure Sensor Intermittent

Diagnostic Fault Information

Typical Scan Tool Data

2010 Cadillac Truck SRX AWD V6-3.0L Page 1139

2010 Cadillac Truck SRX AWD V6-3.0L Page 1139

DTC P0117 or P0118 (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0117

- Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

DTC P0118

- Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit Description

The engine coolant temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. The engine control module

(ECM) supplies 5 V to the ECT signal circuit and supplies a ground to the low reference circuit.

The following table illustrates the difference between temperature, resistance, and voltage:

Conditions for Running the DTC

P0117

* The engine is operating.

* The start up intake air temperature (IAT) is less than 72掳C (161掳F).

OR

* The start up intake air temperature (IAT) is greater than 72掳C (161掳F).

* The engine run time is greater than 59 s.

* The DTC runs continuously once the above conditions are met.

P0118

* The ignition is ON or the engine is operating.

* The DTC runs continuously once the above condition is met.

Conditions for Setting the DTC

2010 Cadillac Truck SRX AWD V6-3.0L Page 762

2010 Cadillac Truck SRX AWD V6-3.0L Page 762

* The parking brake control module clears the history DTC when a current DTC is not detected in 40 ignition cycles.

* Calibrate the parking brake control module.

Reference Information

Schematic Reference

Park Brake System Schematics (See: Brakes and Traction Control/Parking Brake System/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Electronic Parking Brake Control Module Description (See: Brakes and Traction Control/Parking Brake System/Parking Brake Control

Module/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

Verify DTC C028B is not set.

If DTC is set, perform the Parking Brake Calibration procedure in Configuration/Reset Functions. If the DTC resets replace the K83 Parking Brake

Control 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 parking brake control module replacement, setup, and

programming.

C028D

DTC C028D

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 C028D 00

- Replace Park Brake Pad Malfunction

Circuit/System Description

The parking brake control module has an internal motor, apply actuator, release actuator, and temperature sensor. The parking brake control module

also contains the logic for applying and releasing the park brake when commanded by the park brake control switch. When the parking brake

control module receives a signal from the switch, the internal circuit board temperature is checked to verify it is within operating range before the

control module performs the requested operation.

2010 Cadillac Truck SRX AWD V6-3.0L Page 682

2010 Cadillac Truck SRX AWD V6-3.0L Page 682

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Radio Control Switch Replacement - Steering Wheel (See: Accessories and Optional Equipment/Radio, Stereo, and Compact

Disc/Radio/Stereo/Service and Repair/Radio Control Switch Replacement - Steering Wheel)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming

B3650

DTC B3650

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 B3650 08

- High Beam Request Signal Circuit Performance - Signal Invalid

Diagnostic Fault Information

Circuit/System Description

The BCM monitors the voltage level within the high beam signal circuit and the flash to pass signal circuit. When the turn signal/multifunction

switch is moved to the high beam position or to the flash to pass position, the voltage within the appropriate signal circuit drops to less than 1 V.

The BCM will detect the voltage drop and will command the headlamp high beams to turn ON or OFF.

Conditions for Running the DTC

Battery voltage must be between 9-16 V.

Conditions for Setting the DTC

The BCM detects a short to ground in the headlamp high beam signal circuit.

Action Taken When the DTC Sets

The high beam headlamps will malfunction.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.

* When the fault is no longer present, the DTC will be a history DTC.

* A history DTC will clear after 50 ignition cycles.

2010 Cadillac Truck SRX AWD V6-3.0L Page 681

2010 Cadillac Truck SRX AWD V6-3.0L Page 681

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S70L Steering Wheel Controls Switch - Left and the S70R Steering Wheel Controls

Switch - Right.

2. Ignition ON, test for B+ between the voltage reference circuit terminal 1 and ground.

瀚慖f less than the specified value, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests

normal, replace the K9 Body Control Module.

3. Test for B+ between the voltage reference circuit terminal 1 and the signal circuit terminals listed below:

* Signal circuit terminal 6 - S70L Steering Wheel Controls Switch - Left

* Signal circuit terminal 2 - S70R Steering Wheel Controls Switch - Right

瀚慖f less than the specified value, test the signal circuits for a short to voltage or an open/high resistance. If the circuit tests normal, replace

the K9 Body Control Module.

4. Ignition OFF, disconnect the X3 harness connector at the K9 Body Control Module.

5. Test for infinite resistance between the signal circuit terminals listed below and ground.

* Signal circuit terminal 6 - S70L Steering Wheel Controls Switch - Left

* Signal circuit terminal 2 - S70R Steering Wheel Controls Switch - Right

瀚慖f less than the specified value, test the signal circuit for a short to ground.

6. Ignition ON, test for less than 0.3 V between the signal circuit terminal 5 at the S70R Steering Wheel Controls Switch - Right and ground.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage.

7. Test for infinite resistance between the signal circuit terminal 5 at the S70R Steering Wheel Controls Switch - Right and ground.

瀚慖f not the specified value, test the signal circuit for a short to ground.

8. Test for less than 5 ohm between the signal circuit terminal 5 at the S70R Steering Wheel Controls Switch - Right and the signal circuit

terminal 5 at the S70L Steering Wheel Controls Switch - Left.

瀚慖f greater than the specified range, test the signal circuit for an open/high resistance.

9. If all circuits test normal, test or replace the S70R Steering Wheel Controls Switch - Right or S70L Steering Wheel Controls Switch - Left.

Component Testing

Static Test

Right Steering Wheel Switch

1. Disconnect the harness connector at the S70R Steering Wheel Controls Switch - Right.

2. Test the resistance between the terminals 1 and 2 of the S70R Steering Wheel Controls Switch - Right.

瀚慖f any of the resistance measurements for the individual switches are not within the specified resistance values, replace the S70R Steering

Wheel Controls Switch - Right.

Left Steering Wheel Switch

1. Disconnect the harness connector at the S70L Steering Wheel Controls Switch - Left.

2. Test the resistance between the terminals 5 and 6 of the S70L Steering Wheel Controls Switch - Left.

瀚慖f any of the resistance measurements for the individual switches are not within the specified resistance values, replace the S70R Steering

Wheel Controls Switch - Right.

2010 Cadillac Truck SRX AWD V6-3.0L Page 1006

2010 Cadillac Truck SRX AWD V6-3.0L Page 1006

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

1. Ignition ON, observe the DTC information with a scan tool. Verify that none of the following DTCs are set. DTC P0010, P0013, P0020,

P0023, P0335, P0336, P0340, P0341, P0345, P0346, P0365, P0366, P0390, or P0391.

瀚慖f any of the DTCs listed are set refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for further diagnosis.

2. Idle the engine at normal operating temperature. DTCs P0016, P0017, P0018, or P0019 should not set.

瀚慖f a DTC sets, inspect for the following and repair as necessary:

* The correct installation of the camshaft sensors

* The correct installation of the crankshaft sensor

* A timing chain tensioner condition

* An incorrectly installed timing chain

* Excessive play in the timing chain

* A mechanical cam actuator that is stuck in the full advance or retard position.

* A timing chain that jumped teeth

* A crankshaft reluctor wheel that has moved in relationship to top dead center (TDC) on the crankshaft

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Timing Chain Alignment Diagram (See: Engine, Cooling and Exhaust/Engine/Timing Components/Timing Component Alignment

Marks/Locations)

* Camshaft Timing Drive Components Cleaning and Inspection (See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/81.

Camshaft Timing Drive Components Cleaning and Inspection)

* Crankshaft and Bearing Cleaning and Inspection (See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/66. Crankshaft

and Bearing Cleaning and Inspection)

P16F3

DTC P0601-P0604, P0606, P0607, P0610, P062B, P062F, P0630, P16F3, or P2610 (ECM, LF1/LFW/LWR)

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 P0601

- Control Module Read Only Memory Performance

DTC P0602

- Control Module Not Programmed

2010 Cadillac Truck SRX AWD V6-3.0L Page 92

2010 Cadillac Truck SRX AWD V6-3.0L Page 92

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

7. If all circuits test normal, replace the F105, F106 air bag or F112 seat belt retractor pretensioner.

DTC B0019-B0020

1. Ignition OFF, disconnect harness connector X206.

2. Disconnect the scan tool.

3. Wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below on the SDM side of the connector:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

6. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

8. If all circuits test normal, replace the F105 passenger instrument panel air bag.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Side Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Driver or Passenger Seat Side Inflatable Restraint Module Replacement)

* Seat Belt Retractor Pretensioner Replacement - Front (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service

and Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front)

* Instrument Panel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Instrument Panel Inflatable Restraint Module Replacement)

* Roof Side Rail Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Roof Side Rail Inflatable Restraint Module Replacement)

* 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 SDM replacement, setup, and programming

B0018

DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

2010 Cadillac Truck SRX AWD V6-3.0L Page 175

2010 Cadillac Truck SRX AWD V6-3.0L Page 175

DTC B0088 05

- Right Rear Side Impact Sensor High/Voltage Open

DTC B0088 0C

- Right Rear Side Impact Sensor Low Current

DTC B0088 39

- Right Rear Side Impact Sensor Internal Malfunction

DTC B0088 3A

- Right Rear Side Impact Sensor Incorrect Component Installed

DTC B0088 71

- Right Rear Side Impact Sensor Invalid Data

Diagnostic Fault Information

Circuit/System Description

The impact sensors are equipped on vehicles to supplement the Supplemental Inflatable Restraint (SIR) System performance. The impact sensors

are electronic and are not part of the deployment loops, but instead provide inputs to the sensing and diagnostic module (SDM). The impact sensors

can assist in determining the severity of some frontal and side collisions. The SDM uses the input from the impact sensors to assist in determining

the severity of a collision further supporting air bag deployment. If the SDM determines a deployment is warranted, the SDM will cause current to

flow through the deployment loops deploying the frontal air bags.

Conditions for Running the DTC

Ignition voltage is between 9-16 V.

Conditions for Setting the DTC

Any of the following conditions exist for 10 seconds:

B0083 01, B0084 01, B0085 01, B0086 01, B0087 01, B0088 01

The sensor has been shorted to voltage.

B0083 02, B0084 02, B0085 02, B0086 02, B0087 02, B0088 02

* The sensor has been shorted to ground.

* The sensor current is greater than 23 mA for greater than 5 milliseconds.

2010 Cadillac Truck SRX AWD V6-3.0L Page 57

2010 Cadillac Truck SRX AWD V6-3.0L Page 57

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 radio or EBCM replacement, setup, and programming

B001A

DTC B001A or B001B

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 B001A 01

- Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery

DTC B001A 02

- Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Ground

DTC B001A 04

- Driver Seat Belt Anchor Pretensioner Deployment Loop Open

DTC B001A 0D

- Driver Seat Belt Anchor Pretensioner Deployment Loop High Resistance

DTC B001A 0E

- Driver Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

DTC B001B 01

- Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Battery

DTC B001B 02

- Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Ground

DTC B001B 04

- Passenger Seat Belt Anchor Pretensioner Deployment Loop Open

DTC B001B 0D

- Passenger Seat Belt Anchor Pretensioner Deployment Loop High Resistance

DTC B001B 0E

- Passenger Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

Diagnostic Fault Information

Circuit/System Description

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the

deployment loop in order to deploy the appropriate seat belt anchor pretensioner. The SDM performs continuous diagnostic tests on the deployment

2010 Cadillac Truck SRX AWD V6-3.0L Page 554

2010 Cadillac Truck SRX AWD V6-3.0L Page 554

The telematics communication interface control module 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 telematics communication interface control module will set this DTC.

Action Taken When the DTC Sets

* The OnStar(R) status LED turns red.

* No calls can be placed.

* The telematics communication interface control module 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/Connector End Views By Name)

Description and Operation

OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar)

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 15 Ohms between the mirror ground circuit terminal 5 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 3 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 K73

telematics communication interface control module.

4. Ignition OFF, test for 600k-850k Ohms between the keypad signal circuit terminal 3 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 K73 telematics

communication interface control module.

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 K73

telematics communication interface control module.

5. Ignition ON, test for 9.5-10.5 V between the keypad supply voltage circuit terminal 4 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 K73 telematics communication interface control module.

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 K73

telematics communication interface control module.

6. If all circuits test normal, test or replace the button assembly.

2010 Cadillac Truck SRX AWD V6-3.0L Page 1270

2010 Cadillac Truck SRX AWD V6-3.0L Page 1270

* Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 1)

* Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0204

DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, or P0277

(LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0201

- Cylinder 1 Injector Control Circuit

DTC P0202

- Cylinder 2 Injector Control Circuit

DTC P0203

- Cylinder 3 Injector Control Circuit

DTC P0204

- Cylinder 4 Injector Control Circuit

DTC P0205

- Cylinder 5 Injector Control Circuit

DTC P0206

- Cylinder 6 Injector Control Circuit

DTC P0261

- Cylinder 1 Injector Control Circuit Low Voltage

DTC P0262

- Cylinder 1 Injector Control Circuit High Voltage

DTC P0264

- Cylinder 2 Injector Control Circuit Low Voltage

DTC P0265

- Cylinder 2 Injector Control Circuit High Voltage

DTC P0267

- Cylinder 3 Injector Control Circuit Low Voltage

DTC P0268

- Cylinder 3 Injector Control Circuit High Voltage

DTC P0270

- Cylinder 4 Injector Control Circuit Low Voltage

DTC P0271

- Cylinder 4 Injector Control Circuit High Voltage

DTC P0273

- Cylinder 5 Injector Control Circuit Low Voltage

DTC P0274

- Cylinder 5 Injector Control Circuit High Voltage

2010 Cadillac Truck SRX AWD V6-3.0L Page 819

2010 Cadillac Truck SRX AWD V6-3.0L Page 819

DTC Descriptor

DTC C0406 0B

- Transfer Case Solenoid Valve Control Circuit High Current

Diagnostic Fault Information

Circuit/System Description

The rear drive clutch solenoid valve is internal to the torque transfer device housing. The rear differential clutch control module supplies battery

voltage to the control circuit and ground to the low reference circuit of the solenoid valve. The solenoid valve is controlled by a pulse width

modulation (PWM) signal. The solenoid valve controls the hydraulic pressure to the clutch package of the torque transfer device. The locking level

of the torque transfer device depends on the engagement of the clutch package.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

* The rear differential clutch control module detects a short to ground on the control circuit of the rear drive clutch solenoid valve.

* The rear differential clutch control module detects a current more than 11 A on the control circuit of the rear drive clutch solenoid valve.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* All-wheel drive (AWD) is disabled.

* Service Rear Axle is displayed on the driver information center.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.

* The DTC is not detected in 40 consecutive ignition cycles.

Reference Information

Schematic Reference

Rear Axle Schematics (See: Transmission and Drivetrain/Differential Assembly/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Rear Drive Axle Description and Operation (See: Transmission and Drivetrain/Differential Assembly/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

Engine running, observe the scan tool Rear Drive Clutch Status parameter. The scan tool should display TEMPORARILY LIMITED when

2010 Cadillac Truck SRX AWD V6-3.0L Page 73

2010 Cadillac Truck SRX AWD V6-3.0L Page 73

- SDM wiring harness connector

- Roof rail air bag wiring harness connector

- Seat side air bag wiring harness connector

- Passenger instrument panel air bag wiring harness connector

- Seat belt retractor pretensioner wiring harness connector

* The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an

audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.

* If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct

the high resistance condition due to terminal fretting corrosion.

Observe the scan tool Deployment Loop Resistance parameters while moving the harness near each connector listed below. The reading should stay

consistently between 1.7 and 4.2 ohm without any drop outs or spikes.

* F105 Passenger instrument panel air bag, and Roof rail air bag

* F106 Seat side air bag

* F112 Seat belt retractor pretensioner

* Any inline harness

* K36 SDM

If the reading is erratic while moving the harness, perform the following:

* Inspect each connector terminal for damage or corrosion and repair as necessary.

* Apply Nyogel lubricant 760G to each connector terminal.

* Insure each connector and CPA is correctly seated.

Circuit/System Testing

DTC B0014-B0018 or B0021-B0045

1. Ignition OFF, disconnect the harness connector at the appropriate F105, F106 air bag or F112 seat belt retractor pretensioner.

2. Ignition OFF, disconnect the scan tool, wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below:

* F105 Left roof rail airbag terminal 1 and 2

* F105 Right roof rail airbag terminal 1 and 2

* F106 Driver seat side airbag terminal 1 and 2

* F106 Passenger seat side airbag terminal 1 and 2

* F112 Driver seat belt retractor pretensioner terminal 1 and 2

* F112 Passenger seat belt retractor pretensioner terminal 1 and 2

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 1

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 2

* F112 seat belt retractor pretensioner control circuit terminal 1

* F112 seat belt retractor pretensioner control circuit terminal 2

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

4. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 1

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 2

* F112 seat belt retractor pretensioner control circuit terminal 1

* F112 seat belt retractor pretensioner control circuit terminal 2

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

5. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Left roof rail air bag terminal 1 and 2

* F105 Right roof rail air bag terminal 1 and 2

* F106 Driver seat side air bag terminal 1 and 2

* F106 Passenger seat side air bag terminal 1 and 2

* F112 Driver seat belt retractor pretensioner terminal 1 and 2

* F112 Passenger seat belt retractor pretensioner terminal 1 and 2

6. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

2010 Cadillac Truck SRX AWD V6-3.0L Page 647

2010 Cadillac Truck SRX AWD V6-3.0L Page 647

* 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 B3205 00

- Driver Window Motor Circuit

DTC B3205 39

- Driver Window Motor Circuit internal electronic failure

DTC B3205 42

- Driver Window Motor Circuit calibration data set not programmed

DTC B3205 4B

- Driver Window Motor Circuit calibration not learned

DTC B3210 00

- Right Front/Passenger Window Motor Circuit

DTC B3210 39

- Right Front/Passenger Window Motor Circuit internal electronic failure

DTC B3210 42

- Right Front/Passenger Window Motor Circuit calibration data set not programmed

DTC B3210 4B

- Right Front/Passenger Window Motor Circuit calibration not learned

DTC B3215 39

- Left Rear Window Motor Circuit internal electronic failure

DTC B3220 39

- Right Rear Window Motor Circuit internal electronic failure

Circuit/System Description

When a window switch is pressed on the driver window switch, a serial data message is sent to the body control module (BCM). The BCM

examines the request and checks for messages from other power window motors prohibiting the window movement. If no prohibitive messages

have been received, the BCM will send a serial data message to the passenger window motor or to the appropriate rear window switch which will

perform the command as requested.

Conditions for Running the DTC

* The ignition switch is in the ON position

* Battery voltage must be between 9-16 V.

Conditions for Setting the DTC

B3205 00, B3210 00

The BCM has detected that the compatibility code stored in the affected window motor does not match the compatibility code stored in the BCM.

B3205 39, B3210 39, B3215 39, B3220 39

An internal malfunction has been detected by the BCM in the power window motor while commanding the window UP or DOWN.

B3205 42, B3210 42

The BCM will automatically attempt to download the calibration program into the appropriate window motor (As will occur when the window

motor has been replaced), if the first calibration program fails to load, the BCM will attempt to download the calibration program a second time. If

this download fails, the BCM will set appropriate DTC.

2010 Cadillac Truck SRX AWD V6-3.0L Page 830

2010 Cadillac Truck SRX AWD V6-3.0L Page 830

also contains the logic for applying and releasing the parking brake when commanded by the park brake control switch. When the parking brake

control module receives a signal from the switch the internal circuit board temperature is checked to verify it is within operating range before the

control module performs the requested operation.

Conditions for Running the DTC

Ignition OFF, ACCESSORY, or RUN mode.

Conditions for Setting the DTC

C0558 55

The parking brake control module detects a calibration malfunction.

C0558 5A

The parking brake control module detects mechanical problems with the parking brake system.

Action Taken When the DTC Sets

C0558 55

* The electric parking brake is disabled, switch command will not be accepted.

* A message and/or a warning indicator may be displayed.

C0558 5A

* The electric parking brake is disabled, one release allowed.

* A message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

* The parking brake control module clears the history DTC when a current DTC is not detected in 40 ignition cycles.

* Calibrate the parking brake control module.

Diagnostic Aids

* Verify the parking brake control module software and calibrations are the newest available versions.

* Verify the parking brake cable is not broken or pinched.

Reference Information

Schematic Reference

Park Brake System Schematics (See: Brakes and Traction Control/Parking Brake System/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Electronic Parking Brake Control Module Description (See: Brakes and Traction Control/Parking Brake System/Parking Brake Control

Module/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

1. Ignition ON, command the Park Brake Cable Service Apply ON with a scan tool. Verify the Park Brake Cable Position parameter is below

1250 counts.

瀚慖f greater than the specified value, make sure the park brake cable is connected properly and check park brake linings for excessive wear,

2010 Cadillac Truck SRX AWD V6-3.0L Page 1096

2010 Cadillac Truck SRX AWD V6-3.0L Page 1096

to request DTC P069E to be set in the ECM.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)

Circuit/System Verification

Note: Correct any engine controls and communication DTCs before diagnosing fuel pump control module DTCs.

1. DTC P069E is an informational DTC. If there are no engine controls or communication DTCs, refer to Diagnostic Trouble Code (DTC) List -

Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for diagnosis of fuel pump control

module DTCs.

2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

P071A

DTC P071A

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 P071A

- Transmission Tow Mode Switch Circuit

Circuit/System Description

Tow/haul mode enables the operator to achieve enhanced shift performance when towing or hauling a load. When tow/haul mode is selected, the

tow/haul switch input signal to the body control module (BCM) is momentarily toggled to zero volts. This signals the transmission control module

(TCM) to extend the length of time between upshifts and increase transmission line pressure. Cycling the tow/haul switch again disables tow/haul

mode and returns the transmission to a normal shift pattern.

Conditions for Running the DTC

* No Transmission Mode Switch Signal DTC P1762.

* The engine speed is greater than 500 RPM for 5 seconds.

* The system voltage is 8-18 volts.

Conditions for Setting the DTC

The Tow Mode switch remains closed, low voltage, for 600 seconds.

Action Taken When the DTC Sets

DTC P071A is a Type C DTC.

Conditions for Clearing the DTC

DTC P071A is a Type C DTC.

2010 Cadillac Truck SRX AWD V6-3.0L Page 730

2010 Cadillac Truck SRX AWD V6-3.0L Page 730

Circuit/System Testing

1. Ignition OFF, disconnect the X1 harness connector at the K68 trailer lighting control module.

2. Test for infinite resistance between the control circuit terminal 8 and ground.

瀚慖f less than the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the X88 trailer connector.

3. Test for less than 1 ohm between the control circuit terminal 8 at the K68 trailer lighting control module and control circuit terminal 2 at the

X88 trailer connector.

瀚慖f greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal,

replace the X88 trailer connector.

4. If all the circuits test normal, replace the K68 trailer lighting control 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 the trailer brake control module replacement,

programming and setup

B3890

DTC B3890

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 B3890 02

- Trailer Backup Lamps Circuit Short to Ground

DTC B3890 04

- Trailer Backup Lamps Circuit Open

Diagnostic Fault Information

Circuit/System Description

The trailer brake control module will receive a serial data message from the BCM indicating that the vehicle backup lamps have been activated. The

trailer brake control module will then apply system voltage to the trailer backup lamps through their respective voltage supply circuits.

Conditions for Running the DTC

When the trailer backup lamps are turned on.

Conditions for Setting the DTC

B3890 02

The trailer brake control module detects a short to ground on the trailer backup lamp control circuit.

B3890 04

The trailer brake control module detects an open/ high resistance on the trailer backup lamp control circuit.

2010 Cadillac Truck SRX AWD V6-3.0L Page 733

2010 Cadillac Truck SRX AWD V6-3.0L Page 733

If the DTC resets, replace the appropriate control 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 instrument cluster, EBCM, HVAC control module,

SDM, ECM, or steering column lock control module replacement, setup, and programming

B3920

DTC B3920

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 B3920 00

- Driver Seat Motors Group 1 Common Circuit Malfunction

DTC B3920 01

- Driver Seat Motors Group 1 Common Circuit Short to Battery

DTC B3920 02

- Driver Seat Motors Group 1 Common Circuit Short to Ground

DTC B3920 42

- Driver Seat Motors Group 1 Common Circuit Calibration Not Programmed

DTC B3920 0B

- Driver Seat Motors Group 1 Common Circuit High Current

Diagnostic Fault Information

Circuit/System Description

The seat memory control module controls the seat motors via half bridges that are connected to power rails internal to the module. The seat memory

control module connects all of the motor control circuits on each power rail to a common reference point whenever they are not in operation. This

reference point is biased to approximately 2.5 V. The seat memory control module checks to see if this reference voltage is shorted to ground or

battery before enabling any seat motor.

When a power seat switch is pressed or when a memory recall is requested, each seat motor receives battery voltage and ground from the seat

memory control module via the motor control circuits. All motors are reversible, so the direction the motor rotates depends on which control circuit

voltage is applied and which control circuit ground is applied. When the switch is operated in the opposite direction, the module reverses the

2010 Cadillac Truck SRX AWD V6-3.0L Page 945

2010 Cadillac Truck SRX AWD V6-3.0L Page 945

DTCs P0641, P0651, P0697, and P06A3 are Type A DTCs.

Conditions for Clearing the DTC

DTCs P0641, P0651, P0697, and P06A3 are Type A DTCs.

Diagnostic Aids

P0641

The 5 V reference 1 circuit provides 5 V to the following sensors:

* B150 fuel tank pressure (FTP) sensor

* B17 barometric pressure (BARO) sensor, throttle inlet absolute pressure sensor

* B47B fuel rail pressure (FRP) sensor

* B1 A/C refrigerant pressure sensor

* All four B23 camshaft position sensors

P0651

The 5 V reference 2 circuit provides 5 V to the B26 crankshaft position sensor.

P0697

The 5 V reference 3 circuit provides 5 V to the following sensors:

* B74 manifold absolute pressure (MAP) sensor

* B107 accelerator pedal position sensor 2

P06A3

The 5 V reference 4 circuit provides 5 V to the following sensors:

* B106 throttle position sensor

* B107 accelerator pedal position sensor 1

瀚慖f the condition is intermittent, move the related harnesses and connectors with the engine operating. Monitor the scan tool 5 V Reference

Circuit Test Status parameters for the affected components. The Circuit Test Status parameter will change from OK or Not Run to Fault if

there is a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

2010 Cadillac Truck SRX AWD V6-3.0L Page 1367

2010 Cadillac Truck SRX AWD V6-3.0L Page 1367

* Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 1)

* Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0273

DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, or P0277

(LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0201

- Cylinder 1 Injector Control Circuit

DTC P0202

- Cylinder 2 Injector Control Circuit

DTC P0203

- Cylinder 3 Injector Control Circuit

DTC P0204

- Cylinder 4 Injector Control Circuit

DTC P0205

- Cylinder 5 Injector Control Circuit

DTC P0206

- Cylinder 6 Injector Control Circuit

DTC P0261

- Cylinder 1 Injector Control Circuit Low Voltage

DTC P0262

- Cylinder 1 Injector Control Circuit High Voltage

DTC P0264

- Cylinder 2 Injector Control Circuit Low Voltage

DTC P0265

- Cylinder 2 Injector Control Circuit High Voltage

DTC P0267

- Cylinder 3 Injector Control Circuit Low Voltage

DTC P0268

- Cylinder 3 Injector Control Circuit High Voltage

DTC P0270

- Cylinder 4 Injector Control Circuit Low Voltage

DTC P0271

- Cylinder 4 Injector Control Circuit High Voltage

DTC P0273

- Cylinder 5 Injector Control Circuit Low Voltage

DTC P0274

- Cylinder 5 Injector Control Circuit High Voltage

2010 Cadillac Truck SRX AWD V6-3.0L Page 982

2010 Cadillac Truck SRX AWD V6-3.0L Page 982

DTC P0133, P013A-P013F, P014A, P014B, P0153, P1133, or P1153 (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0133

- HO2S Slow Response Bank 1 Sensor 1

DTC P013A

- HO2S Slow Response Rich to Lean Bank 1 Sensor 2

DTC P013B

- HO2S Slow Response Lean to Rich Bank 1 Sensor 2

DTC P013C

- HO2S Slow Response Rich to Lean Bank 2 Sensor 2

DTC P013D

- HO2S Slow Response Lean to Rich Bank 2 Sensor 2

DTC P013E

- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2

DTC P013F

- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2

DTC P014A

- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2

DTC P014B

- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2

DTC P0153

- HO2S Slow Response Bank 2 Sensor 1

DTC P1133

- HO2S Insufficient Switching Bank 1 Sensor 1

DTC P1153

- HO2S Insufficient Switching Bank 2 Sensor 1

Diagnostic Fault Information

2010 Cadillac Truck SRX AWD V6-3.0L Page 493

2010 Cadillac Truck SRX AWD V6-3.0L Page 493

* If a seat switch circuit is active in one direction and the switch for the opposite direction is pressed, this DTC will set.

* A short to ground on a switch signal circuit.

Action Taken When the DTC Sets

* A motor output driven in response to a switch considered failed, is deactivated for both directions.

* All memory recall commands are ignored.

* The seat memory control module will respond to any other switch signal that has not set a DTC.

Conditions for Clearing the DTC

* The current DTC will clear and set the code to history, when the fault is no longer present and the ignition is cycled OFF then back to ACC

or RUN.

* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Diagnostic Aids

* If one of the switch signal circuits is shorted to ground, multiple codes will set.

* If a switch is stuck in one direction and the switch is pressed in the opposite direction, a single code will set.

Reference Information

Schematic Reference

Driver Seat Schematics (See: Body and Frame/Seats/Diagrams/Electrical Diagrams/Driver Seat Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Memory Seats Description and Operation (See: Body and Frame/Seats/Description and Operation/Memory Seats)

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 Seat Memory Control Module seat switch parameters listed below while pressing and releasing the appropriate

seat directional switch. The readings should change between Inactive and Forward/Rearward or UP/Down.

* Driver Seat Cushion Front Vertical Switch

* Driver Seat Cushion Rear Vertical Switch

* Driver Seat Horizontal Switch

* Driver Seat Back Switch

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S64D driver seat adjuster switch.

2. Verify that all scan tool driver seat switch parameters listed below are Inactive:

* Driver Seat Cushion Front Vertical Switch

* Driver Seat Cushion Rear Vertical Switch

* Driver Seat Horizontal Switch

* Driver Seat Back Switch

瀚慖f not the specified value, test the appropriate signal circuit listed below for a short to ground. If the circuit tests normal, replace the K40

seat memory control module.

* Front vertical upward switch terminal A

2010 Cadillac Truck SRX AWD V6-3.0L Page 59

2010 Cadillac Truck SRX AWD V6-3.0L Page 59

* 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

Refer to SIR Service Precautions (See: Restraints and Safety Systems/Air Bag Systems/Service Precautions/Technician Safety Information).

Note: Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or

replacement of the affected component/connector.

* Seat belt anchor pretensioner

* SDM

* Seat belt anchor pretensioner wiring harness connector

* SDM wiring harness connector

Note: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an

audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace

any CPA that is damaged or missing.

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the

high resistance condition due to terminal fretting corrosion.

1. Observe the scan tool Deployment Loop Resistance parameters. The reading should be between 2.1 and 4.0 ohm.

瀚慖f not within the specified range, refer to Circuit/System Testing.

2. Observe the scan tool Deployment Loop Resistance parameters while moving the harness near each connector listed below. The reading

should stay consistently between 2.1 and 4.0 ohm without any drop outs or spikes.

* F113 Seat belt anchor pretensioner

* Any harness inline

* K36 SDM

瀚慖f the reading is erratic while moving the harness, perform the following:

* Inspect each connector terminal for damage or corrosion and repair as necessary.

* Apply Nyogel lubricant 760G to each connector terminal.

* Insure each connector and CPA is correctly seated.

Circuit/System Testing

Refer to SIR Service Precautions (See: Restraints and Safety Systems/Air Bag Systems/Service Precautions/Technician Safety Information).

Note: Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or

replacement of the affected component/connector.

* Seat belt anchor pretensioner

* SDM

* Seat belt anchor pretensioner wiring harness connector

* SDM wiring harness connector

Note: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an

audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace

any CPA that is damaged or missing.

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the

high resistance condition due to terminal fretting corrosion.

1. Ignition OFF, disconnect the harness connector at the appropriate F113 seat belt anchor pretensioner.

2010 Cadillac Truck SRX AWD V6-3.0L Page 1413

2010 Cadillac Truck SRX AWD V6-3.0L Page 1413

the engine from potentially damaging levels of detonation. The knock sensor produces an AC voltage signal that varies depending on the vibration

level during engine operation. The ECM adjusts the spark timing based on the amplitude and the frequency of the knock sensor signal. The ECM

receives the knock sensor signal through 2 isolated signal circuits for each bank. The ECM learns a minimum knock sensor noise level for all of the

RPM range. The ECM monitors for a normal knock sensor signal. The ECM monitors the internal knock sensor processor by verifying a 20 KHz

signal generated on the output circuit is detected on the return circuit.

Conditions for Running the DTC

P0324, P0326 and P0331-Excessive Knock Detection Mode

* Engine speed is between 400-8,500 RPM.

* The engine coolant temperature (ECT) is warmer than -40掳C (-40掳F).

* The intake air temperature (IAT) is warmer than -40掳C (-40掳F).

* The DTCs run continuously when the above conditions are met.

P0324, P0326 and P0331-Abnormal Noise Detection Mode-Improperly Bolted Knock Sensor

* Engine speed is between 2,200-8,500 RPM.

* The ECT is warmer than -40掳C (-40掳F).

* The IAT is warmer than -40掳C (-40掳F).

* The DTCs run continuously when the above conditions are met.

P0325, P0327, P0328, P0330, P0332, and P0333

* Engine speed is between 400-8,500 RPM.

* The ECT is warmer than -40掳C (-40掳F).

* The IAT is warmer than -40掳C (-40掳F).

* The DTCs run continuously when the above conditions are met.

P06B6 and P06B7

* Engine speed is between 400-4,000 RPM.

* The ECT is warmer than -40掳C (-40掳F).

* The IAT is warmer than -40掳C (-40掳F).

* The DTCs run continuously when the above conditions are met.

Conditions for Setting the DTC

P0324

The ECM detects that the knock sensor signal indicates an excessive engine knock is present for greater than 10 s for at least 1 single cylinder.

P0325 and P0330

The ECM detects that the knock sensor signal circuits are open for greater than 10 s.

P0326 and P0331

* The ECM detects that the knock sensor signal indicates the sensor harness is connected, but the sensor is not properly bolted to the engine.

OR

* The ECM detects that the knock sensor signal indicates an excessive engine knock is present in an entire bank.

* Either of the above conditions exist for greater than 10 s.

P0327 and P0332

The ECM detects that the knock sensor signal circuits are shorted to ground for greater than 10 s.

P0328 and P0333

The ECM detects that the knock sensor signal circuits are shorted to voltage for greater than 10 s.

P06B6 and P06B7

The ECM has detected an internal knock sensor processor fault.

Action Taken When the DTC Sets

* DTCs P0324, P0325, P0326, P0327, P0328, P0330, P0331, P0332 P0333, P06B6, and P06B7 are Type B DTCs.

* The ignition timing is retarded to reduce the potential of engine damaging spark knock.

Conditions for Clearing the DTC

DTCs P0324, P0325, P0326, P0327, P0328, P0330, P0331, P0332 P0333, P06B6, and P06B7 are Type B DTCs.

2010 Cadillac Truck SRX AWD V6-3.0L Page 943

2010 Cadillac Truck SRX AWD V6-3.0L Page 943

is handled inside the TCM and no external circuits are involved.

Conditions for Running the DTC

P06AC

* 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, P0658, P0668, P0669, P06AC, P06AD, P06AE,

P0712, P0713, P0716, P0717, P0722, P0723, P0962, P0963, P0966, P0967, P0970, P0971, P215C, P2720, P2721, P2729, or P2730.

* The engine speed is 400 RPM or greater for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* Brake torque is not active.

* The torque signal is valid.

* The throttle position signal is valid.

P06AD

* No DTCs P06AD, P0716, P0717, P0722, or P0723.

* The engine speed is 400 RPM or greater for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

P06AE

* The engine speed is 400 RPM or greater for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P06AE has not set this ignition cycle.

Conditions for Setting the DTC

P06AC

* The difference between the transmission fluid temperature (TFT) and TCM power up temperature is greater than 20-50掳C (36-90掳F),

depending on the average of the TFT, TCM substrate, and TCM power up temperatures.

* The difference between the TCM substrate temperature and TCM power up temperature is greater than 8-10掳C (14-18掳F) depending on the

average of the TFT, TCM substrate, and TCM power up temperatures.

* The above conditions have to be met for 5 minutes within a 6 minute period.

P06AD

The TCM power up temperature is -59掳C (-74掳F) or less for 1 minute.

P06AE

The TCM power up temperature is 165掳C (329掳F) or greater for 1 minute.

Action Taken When the DTC Sets

* DTC P06AC, P06AD, P06AE are Type B DTCs.

* The TCM defaults the TCM power up temperature to the TCM substrate temperature.

Conditions for Clearing the DTC

DTC P06AC, P06AD, P06AE are Type B DTCs.

Reference Information

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

* Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/6T70/6T75 - Automatic Transmission/Transmission General Description)

* Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/6T70/6T75 - Automatic Transmission/Electronic Component Description) for control solenoid valve assembly

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

2010 Cadillac Truck SRX AWD V6-3.0L Page 1460

2010 Cadillac Truck SRX AWD V6-3.0L Page 1460

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

1. Engine running, observe the following scan tool control circuit status parameters for the appropriate cylinder T8 ignition coil:

* Ignition Coil 1-6 Control Circuit Low Voltage Test Status

* Ignition Coil 1-6 Control Circuit Open Test Status

* Ignition Coil 1-6 Control Circuit High Voltage Test Status

Each parameter should display Not Run or OK.

2. Engine idling, observe the DTC information with a scan tool. DTC P0351, P0352, P0353, P0354, P0355, or P0356 should not set.

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.

2. Ignition OFF, and all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down. Test for less than 5 ohm between

the ground circuit terminal A and ground.

瀚慖f greater than the specified range, repair the ground circuit for an open/high resistance.

3. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal B and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

4. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground.

瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests

normal and the ignition voltage circuit fuse is open, test all components connected to the ignition voltage circuit and replace as necessary.

5. Engine running, observe the Ignition Coil 1-6 Control Circuit Low Voltage Test Status on the scan tool. Test Status should be Ok or Not

Run.

瀚慖f test status is Malfunction test for open or short to ground.

6. Engine running, observe the Ignition Coil 1-6 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.

瀚慖f test status is Malfunction test for open circuit.

7. Engine running, observe the Ignition Coil 1 6 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not

Run.

瀚慖f test status is Malfunction test for short to voltage.

8. If all circuits test normal, test or replace the T8 ignition coil.

Repair Instructions

* T8 Ignition Coil Replacement - Bank 1 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil

Replacement - Bank 1)

* T8 Ignition Coil Replacement - Bank 2 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil

Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

Repair Verification

Note: An ignition control circuit fault condition will result in an engine misfire, and under certain driving conditions could possibly overheat the

3-way catalytic converter.

2010 Cadillac Truck SRX AWD V6-3.0L Page 915

2010 Cadillac Truck SRX AWD V6-3.0L Page 915

P0090

* The ECM detects an open circuit in the high pressure fuel pump actuator low control circuit.

* The DTC sets when the above condition is present for 4 s.

P0091

* The ECM detects a short to ground in the high pressure fuel pump actuator low control circuit.

* The DTC sets when the above condition is present for 4 s.

P0092

* The ECM detects a short to voltage in the high pressure fuel pump actuator low control circuit.

* The DTC sets when the above condition is present for 4 s.

P00C8

* The ECM detects an open circuit in the high pressure fuel pump actuator high control circuit.

* The DTC sets when the above condition is present for 4 s.

P00C9

* The ECM detects a short to ground in the high pressure fuel pump actuator high control circuit.

* The DTC sets when the above condition is present for 4 s.

P00CA

* The ECM detects a short to voltage in the high pressure fuel pump actuator high control circuit.

* The DTC sets when the above condition is present for 4 s.

Action Taken When the DTC Sets

* DTCs P0090, P0091, P0092, P00C8, P00C9, and P00CA are Type A DTCs.

* A message center or an indicator displays Reduced Engine Power.

Conditions for Clearing the DTC

DTCs P0090, P0091, P0092, P00C8, P00C9, and P00CA are Type A DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation/Fuel System

Description)Fuel System Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and

Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P0090, P0091, P0092, P00C8, P00C9, P00CA, P0685, or P1682 should not set.