2010 Cadillac Truck SRX AWD V6-3.0L Page 581

2010 Cadillac Truck SRX AWD V6-3.0L Page 581

* 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

Headlights/Daytime Running Lights (DRL) Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System

Diagram/Headlights/Daytime Running Lights (DRL) Schematics)

Connector End View Reference

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

Description and Operation

Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems)

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, command the Left Dedicated Daytime Running Lamp and the Right Dedicated Daytime Running Lamp ON and OFF with a scan tool.

The E4C daytime running lamp - left and the E4D daytime running lamp - right should turn ON and OFF while changing between the commanded

states.

Circuit/System Testing

1. Ignition OFF, disconnect the X1 harness connector K9 BCM.

2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 3 and ground.

瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

3. Ignition OFF, connect the X1 harness connector K9 BCM

4. Ignition OFF, disconnect the inline harness connector listed below:

* E4C daytime running lamp - left X111 inline harness connector

* E4D daytime running lamp - right X116 inline harness connector

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

6. Command the appropriate Dedicated Daytime Running Lamp ON and OFF 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 the circuit tests 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 the circuits test normal, replace

the K9 BCM.

7. If all circuits test normal, replace the daytime running lamp bulb.

Repair Instructions

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

* Daytime Running Lamp Bulb Replacement (TT6,TT7,TT8 Passenger Side Headlamp) (See: Lighting and Horns/Daytime Running

Lamp/Service and Repair/Daytime Running Lamp Bulb Replacement (TT6,TT7,TT8 Passenger Side Headlamp))Daytime Running Lamp

Bulb Replacement (T84, T85 Passenger Side Headlamp) (See: Lighting and Horns/Daytime Running Lamp/Service and Repair/Daytime

Running Lamp Bulb Replacement (T84, T85 Passenger Side Headlamp))Daytime Running Lamp Bulb Replacement (T84, T85 Driver Side

Headlamp) (See: Lighting and Horns/Daytime Running Lamp/Service and Repair/Daytime Running Lamp Bulb Replacement (T84, T85

Driver Side Headlamp))Daytime Running Lamp Bulb Replacement (TT6,TT7,TT8 Driver Side Headlamp) (See: Lighting and

Horns/Daytime Running Lamp/Service and Repair/Daytime Running Lamp Bulb Replacement (TT6,TT7,TT8 Driver Side Headlamp))

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

2010 Cadillac Truck SRX AWD V6-3.0L Page 559

2010 Cadillac Truck SRX AWD V6-3.0L Page 559

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

* A history DTC will clear after 50 ignition cycles.

Diagnostic Aids

Before testing can be performed the liftgate must be opened. Refer to Opening the Liftgate Without Electrical Power (See: Body and

Frame/Doors, Hood and Trunk/Trunk / Liftgate/Service and Repair/Procedures) for the appropriate procedure.

Reference Information

Schematic Reference

Liftgate Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Liftgate Schematics)

Connector End View Reference

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

Description and Operation

Rear Hatch/Gate Description and Operation (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Description and Operation/Rear

Hatch/Gate)

Electrical Information Reference

* 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)

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

Testing/Circuit Testing)

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

Repairs/Wiring Repairs)

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

Procedures/Connector Repairs/Connector 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 Trunk Lid/Liftglass Exterior Unlatch Switch parameter while pressing the exterior liftgate switch. The reading

should change between Active and Inactive.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the exterior liftgate switch.

2. Test for less than 1.0 ohm between the ground circuit terminal 2 and ground.

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

3. Ignition ON, verify the scan tool Trunk Lid/Liftglass Exterior Unlatch Switch parameter is Inactive.

瀚慖f not the specified parameter, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the BCM.

4. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the ground circuit terminal 2. Verify the scan tool Trunk

Lid/Liftglass Exterior Unlatch Switch parameter is Active.

瀚慖f not the specified parameter, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the

BCM.

5. If all circuits test normal, test or replace the exterior liftgate switch.

Component Testing

1. Ignition OFF, disconnect the harness connector at the exterior liftgate switch.

2. Test for infinite resistance between the signal terminal 1 and the ground terminal 2 with the switch in the open position.

瀚慖f not the specified value, replace the exterior liftgate switch.

3. Test for less than 2.0 ohm between the signal terminal 1 and the ground terminal 2 with the switch in the closed position.

瀚慖f greater than the specified range, replace the exterior liftgate switch.

2010 Cadillac Truck SRX AWD V6-3.0L Page 483

2010 Cadillac Truck SRX AWD V6-3.0L Page 483

* 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

Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)

Connector End View Reference

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

Description and Operation

Power Door Locks Description and Operation (See: Body and Frame/Locks/Power Locks/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, observe the scan tool Exterior Left Rear Door Handle Switch parameter while pulling and releasing the B27LR door handle

switch - left rear exterior. The parameter should change between Active and Inactive.

瀚慖f the value is always Inactive or always Active, refer to Left rear Exterior Door Handle Inoperative.

2. Ignition ON, observe the scan tool Exterior Right Rear Door Handle Switch parameter while pulling and releasing the B27RR door handle

switch - right rear exterior. The parameter should change between Active and Inactive.

瀚慖f the value is always Inactive or always Active, refer to Right Rear Exterior Door Handle Inoperative.

Circuit/System Testing

Left Rear Exterior Door Handle Inoperative

1. Ignition OFF, disconnect the harness connector at the B27LR door handle switch-left rear exterior.

2. Ignition ON, verify the scan tool Exterior Left Rear Door Handle Switch parameter is Inactive:

瀚慖f not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K84 keyless entry

control module.

3. Install a 3 A fused jumper wire between the signal circuit terminal 2 and ground. Verify the scan tool Exterior Left Rear Door Handle Switch

parameter is Active.

瀚慖f not the specified value, test the signal circuit terminal 2 for an open/high resistance. If the circuit tests normal, replace the K84 keyless

entry control module.

4. If all circuits test normal, test or replace the B27LR door handle switch-left rear exterior.

Right Rear Exterior Door Handle Inoperative

1. Ignition OFF, disconnect the harness connector at the B27RR door handle switch-right rear exterior.

2. Ignition ON, verify the scan tool Exterior Right Rear Door Handle Switch parameter is Inactive:

瀚慖f not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K84 keyless entry

control module.

3. Install a 3 A fused jumper wire between the signal circuit terminal 2 and ground. Verify the scan tool Exterior Right Rear Door Handle

Switch parameter is Active.

瀚慖f not the specified value, test the signal circuit terminal 2 for an open/high resistance. If the circuit tests normal, replace the K84 keyless