2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 298

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 298

Circuit/System Testing

1. Ignition OFF, disconnect the X2 harness connector at the LGM.

2. Test for less than 1 ohm between the ground circuit terminal 6 and ground.

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

3. 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. If the circuit tests normal and the

B+ circuit fuse is open, replace the LGM.

4. Ignition OFF, connect the X2 harness connector and disconnect the X3 harness connector at the LGM.

5. Test for less than 15 ohms between the control terminal 1 at the LGM and ground.

瀚慖f greater than the specified range, replace the LGM.

6. Test for less than 15 ohms between the control terminal 2 at the LGM and ground.

瀚慖f greater than the specified range, replace the LGM

7. Install a 15A fused jumper wire between the control circuit terminal 1 at the liftgate motor assembly and 12 volts. Momentarily install a

jumper wire between the control circuit terminal 2 at the liftgate motor assembly and ground. The liftgate motor should perform the OPEN or

CLOSE function.

瀚慖f the function does not perform as specified, replace the liftgate motor assembly.

8. Install a 15A fused jumper wire between the control circuit terminal 2 and 12 volts. Momentarily install a jumper wire between the control

circuit terminal 1 and ground. The liftgate motor should perform the CLOSE or OPEN function.

瀚慖f the function does not perform as specified, replace the liftgate motor assembly.

9. If all circuits test normal, replace the LGM.

Repair Instructions

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

* Liftgate Close Actuator Motor Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Motor/Service

and Repair/Liftgate Close Actuator Motor Replacement)

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

B396B

DTC B396B

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 B396B 01

- Liftgate Motor Clutch Control Circuit Short to Battery

DTC B396B 02

- Liftgate Motor Clutch Control Circuit Short to Ground

DTC B396B 04

- Liftgate Motor Clutch Control Circuit Open

Diagnostic Fault Information