2010 Cadillac Truck SRX AWD V6-3.0L Page 421

2010 Cadillac Truck SRX AWD V6-3.0L Page 421

Reference Information

Schematic Reference

Power Moding Schematics (See: Diagrams/Electrical Diagrams/Starting and Charging/Power and Ground Distribution/System Diagram/Power

Moding Schematics)

Connector End View Reference

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

Description and Operation

* Retained Accessory Power Description and Operation (See: Power and Ground Distribution/Description and Operation/Retained Accessory

Power)

* Power Mode Description and Operation (See: Power and Ground Distribution/Description and Operation/Power Mode)

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

Without the brake pedal applied, push the ignition mode switch button twice. Observe the operation of the ignition mode switch LED's. The amber

LED should light after the first button push and the green LED should light after the second button push. The engine should not crank and the

ignition mode should be run.

With the brake pedal applied, push the ignition mode switch once. Observe the operation of the ignition mode switch LED's. The green LED should

light after one button push. The engine will crank.

Circuit/System Testing

B097B 61

Verify DTC B097B 61 is not set.

If DTC B097B 61 is set in both the BCM and PEPS module, replace the S38 ignition mode switch.

B0978 01, B0978 02, B0978 04, B097B 00, B097B 02, B097B 04, B097B 08, B097C 01, B097C 02, B097C 04

1. Ignition OFF, disconnect the harness connector at the S38 ignition mode switch.

2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 15 ohm

between the ignition mode switch terminal 4 and ground.

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

3. Reconnect the harness connector at the S38 ignition mode switch.

4. Ignition ON, disconnect the harness connector at the S38 ignition mode switch.

5. Verify a test lamp illuminates between ignition mode switch terminal 6 and ground.

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

K9 BCM.

6. Connect a test lamp between the control circuit 5 and ground.

7. Command the body control module-keyless entry control module-run/start power mode indicator test with a scan tool. The test lamp should

turn ON and OFF when changing between the commanded states.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If all circuits test normal, replace the K9 BCM.

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

the K9 BCM.

8. Connect a test lamp between the control circuit 2 and ground.

2010 Cadillac Truck SRX AWD V6-3.0L Page 890

2010 Cadillac Truck SRX AWD V6-3.0L Page 890

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

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

Description and Operation

ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation)

Electrical Information Reference

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

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

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

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

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

Repairs/Wiring Repairs)

Scan Tool Reference

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

Circuit/System Verification

Ignition ON, observe the scan tool EBCM Wheel Speed Sensor parameters. The reading should be the same speed on all sensors when driving in a

straight line at a speed greater than 20 km/h (13 MPH).

Circuit/System Testing

1. Ignition ON, verify that DTC C0035, C0040, C0045, or C0050 is not present in the EBCM.

瀚慖f any listed DTC is present, refer to DTC C0035, C0040, C0045, or C0050 (See: C Code Charts/C0035) to diagnose that DTC prior to

this diagnostic.

2. Replace the K17 Electronic Brake Control Module (EBCM) and verify the DTC does not reset.

瀚慖f the DTC resets, replace the module that set the DTC.

Repair Instructions

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

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

C1222

DTC C1207-C1210, C1221-C1228, or C1232-C1235

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 C1207 00

- Left Front Wheel Speed Sensor Circuit High Input Malfunction

DTC C1208 00

- Right Front Wheel Speed Sensor Circuit High Input Malfunction

2010 Cadillac Truck SRX AWD V6-3.0L Page 442

2010 Cadillac Truck SRX AWD V6-3.0L Page 442

Reference Information

Schematic Reference

Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System

Schematics)

Connector End View Reference

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

Description and Operation

Radio/Audio System Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Radio/Audio System)

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

Radio ON, adjust the fade and balance control to verify audio is present at each individual channel.

Circuit/System Testing

1. Ignition OFF, disconnect the X1 harness connector at the A11 radio.

2. Ignition ON, test for less than 1 V between the amplifier control circuit terminal 37 and ground.

瀚慖f greater than the specified value, test the circuit for a short to voltage. If the circuit tests normal, replace the T3 audio amplifier.

3. Ignition OFF, test for greater than 20 Ohms between the amplifier control circuit terminal 37 and ground.

瀚慖f less than the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the T3 audio amplifier.

4. Ignition OFF, disconnect the X3 harness connector at the T3 audio amplifier.

5. Test for less than 5 Ohms between the A11 radio X1 terminal 37 to the T3 audio amplifier X3 terminal 11.

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

6. If all circuits test normal, replace the A11 radio.

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 and audio amplifier replacement, setup, and

programming

B1288

DTC B1288

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.

2010 Cadillac Truck SRX AWD V6-3.0L Page 791

2010 Cadillac Truck SRX AWD V6-3.0L Page 791

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

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

Description and Operation

ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation)

Electrical Information Reference

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

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

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

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

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

Repairs/Wiring Repairs)

Scan Tool Reference

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

Circuit/System Verification

Ignition ON, observe the scan tool Brake Pressure Sensor parameter. The reading should be 0 V, when the brake pedal is released and greater than

1 V, when the brake pedal is applied.

Circuit/System Testing

1. Verify that DTC C0131 5A is not present.

瀚慖f DTC C0131 5A is present, perform the Brake Pressure Modulator Valve Pressure Sensor Calibration (See: Brakes and Traction

Control/Antilock Brakes / Traction Control Systems/Hydraulic Control Assembly - Antilock Brakes/Testing and Inspection).

2. Replace the Q5 brake pressure modulator valve assembly and verify the DTC does not reset.

瀚慖f the DTC resets replace the K17 Electronic Brake Control Module (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/Brake Pressure Modulator Valve Replacement)

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

C0161

DTC C0161

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 C0161 5A

- Antilock Braking System Brake Switch Circuit Not Plausible

Circuit/System Description

2010 Cadillac Truck SRX AWD V6-3.0L Page 666

2010 Cadillac Truck SRX AWD V6-3.0L Page 666

Reference Information

Schematic Reference

Instrument Cluster Schematics (See: Diagrams/Electrical Diagrams/Instrument Panel, Gauges and Warning Indicators/System Diagram/Instrument

Cluster Schematics)

Connector End View Reference

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

Description and Operation

Driver Information Center (DIC) Description and Operation (See: Instrument Panel, Gauges and Warning Indicators/Description and

Operation/Driver Information Center (DIC))

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 Driver Information Center Switch parameter, that when the S78 Turn Signal/Multi-Function Switches Menu,

Up, Down Set/Clr are pressed and released the scan tool parameter toggles between Menu, Up, Down, Clear and Inactive.

Circuit/System Testing

1. Ignition OFF, disconnect the X2 harness connector at the S78 Turn Signal/Multi-Function Switch.

2. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 5 and ground.

瀚慖f less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal replace the P16 Instrument Cluster.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal replace the P16 Instrument

Cluster.

3. Test for B+ between the signal circuit terminal 12 and ground.

瀚慖f less than the specified value, test the signal for a short to ground or an open/high resistance. If the circuit tests normal replace the P16

Instrument Cluster.

4. Install a 5 A fused jumper wire between the signal circuit terminal 12 and the low reference circuit terminal 6. Verify the scan tool Driver

Information Center Switch parameter displays 0 V.

瀚慖f not the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal replace the P16 Instrument

Cluster.

5. If all circuits tests normal, test or replace the S78 Turn Signal/Multi-Function Switch.

Component Testing

Static Test

1. Ignition OFF, disconnect the harness connectors at the S78 Turn Signal/Multi-Function Switch.

2. Test for 8.8-9.0k ohm between the signal terminal 12 X2 and the low reference circuit terminal 6 X2.

瀚慖f not within the specified range, replace the S78 Turn Signal/Multi-Function Switch.

3. Test for 550-650 ohm between the signal terminal 12 X2 and the low reference circuit terminal 6 X2 while pressing the Up switch.

瀚慖f not within the specified value, replace the S78 Turn Signal/Multi-Function Switch.

4. Test for 1.5-1.7k ohm between the signal terminal 12 X2 and the low reference circuit terminal 6 X2 while pressing the Down switch.

瀚慖f not within the specified value, replace the S78 Turn Signal/Multi-Function Switch.