2010 Cadillac Truck SRX FWD V6-3.0L Page 317

2010 Cadillac Truck SRX FWD V6-3.0L Page 317

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S3 shift lock actuator.

2. Ignition OFF, test for less than 1.0 Ohms 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. Install a test lamp between the ground circuit terminal 2 and the control circuit terminal 5.

4. Ignition ON, command the scan tool Shift Lock Solenoid Actuator ON and OFF. 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 short to voltage. If the circuit tests normal, replace the K9 body control module.

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

K9 body control module.

5. If all circuits test normal, test or replace the S3 shift lock actuator.

Repair Instructions

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

* Transmission Control Replacement (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Shifter A/T/Service and

Repair/6T70/6T75 - Automatic Transmission/Transmission Control Replacement)

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

B0283

DTC B0283

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 B0283 02

- Electric Rear Defrost Circuit Short To Ground

DTC B0283 05

- Electric Rear Defrost Circuit Short To Battery or Open

Diagnostic Fault Information

Circuit/System Description

When the HVAC control module receives a rear window defog request from the HVAC control faceplate, the HVAC control module will supply

voltage to the relay coil. Battery positive voltage is supplied at all times to the relay switched input and the relay coil is always grounded. This

allows battery positive voltage from the relay switched input to flow through the switch contacts and out the relay switched output to the rear

window defogger grid.

Conditions for Running the DTC

Battery voltage must be between 9-16 V.

Conditions for Setting the DTC