2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 680

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 680

B3135

DTC B3130 or B3135

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 B3130 00

- All Door Unlock Circuit

DTC B3135 00

- All Door Lock Circuit

Diagnostic Fault Information

Circuit/System Description

The LOCK/UNLOCK relay is controlled by the body control module (BCM) by providing voltage to one side of the relay or providing a ground to

the other side of the relay. During lock or unlock operation, battery voltage will be supplied to the lock actuators through the energized side of the

relay and grounded through the de-energized side of the relay.

Conditions for Running the DTC

The system voltage must be between 9-16 volts.

Conditions for Setting the DTC

B3130 00

The BCM detects a fault on the REAR DOOR LOCK/UNLOCK relay control circuit while commanding the rear doors to unlock.

B3135 00

The BCM detects a fault on the REAR DOOR LOCK/UNLOCK relay control circuit while commanding the rear doors to lock.

Action Taken When the DTC Sets

The rear power door locks 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 become a history DTC.

* A history DTC will clear after 50 ignition cycles.