2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 704

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 704

2. Ignition ON, observe the function of the E2RF side marker lamp-right front, E5F tail lamp-right rear and the E4K park lamp-right front while

commanding the Right Park Lamps ON and OFF with a scan tool. The E2RF side marker lamp-right front, E5F tail lamp-right rear and the

E4K park lamp-right front should turn ON and OFF while changing between the commanded states.

瀚慖f the E2RF side marker lamp-right front, E5F tail lamp-right rear and the E4K park lamp-right front are always ON or always OFF, refer

to Right Side Marker/Tail Lamps Malfunction.

Circuit/System Testing

Left Side Marker/Tail Lamps Malfunction

1. Disconnect the X1 harness connector at the E5E tail lamp-left.

2. Test for less than 30 ohm between the ground circuit terminal C and ground.

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

3. Disconnect the appropriate inline harness connector listed below:

* X111 inline harness connector (With TT6/TT7/TT8)

* X115 inline harness connector (Without TT6/TT7/TT8)

4. Test for less than 30 ohm between the ground circuit terminal listed below and ground:

* Ground circuit terminal A

* Ground circuit terminal E

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

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

* E2LF side marker lamp-left front control circuit terminal K

* E4J park lamp-left front control circuit terminal B

* E5E tail lamp-left control circuit terminal B

6. Ignition ON, command the Left Park Lamps 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 the circuits test normal, replace the appropriate left marker lamp.

Right Side Marker/Tail Lamps Malfunction

1. Disconnect the X1 harness connector at the E5F tail lamp-right.

2. Test for less than 30 ohm between the ground circuit terminal C and ground.

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

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

* X112 inline harness connector (With TT6/TT7/TT8)

* X116 inline harness connector (Without TT6/TT7/TT8)

4. Test for less than 30 ohm between the ground circuit terminal listed below and ground:

* Ground circuit terminal A

* Ground circuit terminal E

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

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

* E2RF side marker lamp-right front control circuit terminal K

* E4K park lamp-right front control circuit terminal B

* E5F tail lamp-right control circuit terminal A

6. Ignition ON, command the Right Park Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 573

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 573

2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 1 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 X2 harness connector K9 BCM

4. Disconnect the harness connector at the E5A backup lamp listed below:

* X3 harness connector E5E tail lamp-left (Without T79)

* X1 harness connector E5E tail lamp-left (With T79)

* X3 harness connector E5F tail lamp-right (Without T79)

* X1 harness connector E5F tail lamp-right (With T79)

5. Test for less than 30 ohm between the ground circuit terminal listed below and ground.

* E5E tail lamp-left (Without T79) ground terminal 2

* E5E tail lamp-left (With T79) ground terminal C

* E5F tail lamp-right (Without T79) ground terminal 2

* E5F tail lamp-right (With T79) ground terminal C

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

6. Connect a test lamp between the control circuit terminal listed below and ground:

* E5E tail lamp-left (Without T79) control terminal 1

* E5E tail lamp-left (With T79) control terminal D

* E5F tail lamp-right (Without T79) control terminal 1

* E5F tail lamp-right (With T79) control terminal D

7. Engine running, command the Backup Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between

the selected 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 circuit tests normal, replace

the K9 BCM.

8. If all circuits test normal, test or replace the E5A backup lamp-left and the E5B backup lamp-right.

Repair Instructions

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

* Backup Lamp Bulb Replacement (See: Lighting and Horns/Backup Lamp/Backup Light Bulb/Service and Repair)

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

B2575

DTC B2575 or B2699

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 B2575 01

- Left Headlamp Control Circuit Short to Battery

DTC B2575 02

- Left Headlamp Control Circuit Short to Ground

DTC B2575 04

- Left Headlamp Control Circuit Open

DTC B2699 01

- Right Headlamp Control Circuit Short to Battery

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1026

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1026

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

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

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

Note: Use the J 35616-200 - Test Lamp Kit for this test. If the J 35616-200 - Test Lamp Kit is not available, use a test lamp that measures

greater than 20 ohm.

3. Connect a test lamp between the control circuit terminal 2 and B+.

Note: The voltage must be measured at the control side of the circuit.

4. Command the appropriate Camshaft Position Actuator Solenoid Valve ON with a scan tool. Load test for less than 1 V between the control

circuit terminal 2 and ground.

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

K20 Engine Control Module.

5. Remove the Camshaft Position Actuator Solenoid Valve. Inspect the Camshaft Position Actuator Solenoid Valve and mounting area for the

following conditions:

* For a torn, restricted, mis-positioned, or missing screens at the Camshaft Position Actuator Solenoid Valve

* For engine oil leaks between the oil sealing lands of the Camshaft Position Actuator Solenoid Valve. Inspect the lands of the Camshaft

Position Actuator Solenoid Valve for nicks

* For oil seepage at the Camshaft Position Actuator Solenoid Valve connector

瀚慖f a condition is found, replace Q6 Camshaft Position Actuator Solenoid Valve.

6. Ignition OFF, swap the appropriate Camshaft Position Actuator Solenoid Valve with a Camshaft Position Actuator Solenoid Valve that is

operating correctly.

7. Engine idling. Command the appropriate Camshaft Position Actuator from 0 degrees to 40 degrees and back to zero while observing the

appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the

commanded states.

瀚慖f greater than the specified value, replace the mechanical camshaft position actuator.

8. If all circuits/connections test normal, test or replace the Q6 Camshaft Position Actuator Solenoid Valve.

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve.

2. Test for 7-12 ohm between the control terminal 2 and the ignition terminal 1 of the Q6 Camshaft Position Actuator Solenoid Valve.

瀚慖f not within the specified range, replace the Q6 Camshaft Position Actuator Solenoid Valve.

3. Test for infinite resistance between each terminal and the Q6 Camshaft Position Actuator Solenoid Valve housing.

瀚慖f not the specified value, replace the Q6 Camshaft Position Actuator Solenoid Valve.

Repair Instructions

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

* Camshaft Position Actuator Replacement - Bank 1 (LF1) ()

* Camshaft Position Actuator Replacement - Bank 2 (LF1) ()

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake (See: Engine, Cooling and

Exhaust/Engine/Actuators and Solenoids - Engine/Variable Valve Timing Solenoid/Service and Repair/Camshaft Position Actuator Solenoid

Valve Solenoid Replacement - Bank 1 (Right Side) Intake)

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust (See: Engine, Cooling and

Exhaust/Engine/Actuators and Solenoids - Engine/Variable Valve Timing Solenoid/Service and Repair/Camshaft Position Actuator Solenoid

Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust)

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake (See: Engine, Cooling and

Exhaust/Engine/Actuators and Solenoids - Engine/Variable Valve Timing Solenoid/Service and Repair/Camshaft Position Actuator Solenoid

Valve Solenoid Replacement - Bank 2 (Left Side) Intake)

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust (See: Engine, Cooling and

Exhaust/Engine/Actuators and Solenoids - Engine/Variable Valve Timing Solenoid/Service and Repair/Camshaft Position Actuator Solenoid

Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust)

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