1000 - 1999: 1269

1269-00 NO COMMUNICATION FROM CAB MODULE





When Monitored and Set Condition

- When Monitored: Continuous.
- Set Condition: CAN Bus communication failure between the Body Control Module (BCM) and the Controller Antilock Brake Module (CAB).





For a complete Body Control Module Circuit Diagram. Body - Electrical Diagnostics.

Diagnostic Test

1. MEASURE THE RESISTANCE OF THE CAN B BUS (+) CIRCUIT




Turn the ignition off.
Disconnect the CAB harness connector.
Disconnect the BCM harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of the CAN B Bus (+) circuit from the CAB harness connector to the BCM harness connector.
Is the resistance below 1.0 ohm?

Yes

- Go to 2

No

- Repair the CAN B Bus (+) circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test

2. MEASURE THE RESISTANCE OF THE CAN B BUS (-) CIRCUIT




Measure the resistance of the CAN B Bus (-) circuit from the CAB harness connector to the BCM harness connector.
Is the resistance below 1.0 ohm?

Yes

- Replace the Controller Antilock Brake Module. Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the CAN B Bus (-) circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test