9000 - 9999: 9076

9076 - NO COMMUNICATION WITH BODY CONTROL MODULE (BCM)





- When Monitored: Continuous with the ignition on.
- Set Condition: CAN Bus communication failure between the Body Control Module (BCM) and the Power Top Control Module (PTCM).





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test

1. Check for Current DTCs
Turn the ignition on.
With the scan tool, read and record the Central Locking Pump DTCs.
Are any Central Locking Pump CAN Communication DTC's set?

Yes

- Perform the Central Locking Pump CAN Communication DTC's Diagnostics. Perform POWER TOP CONTROL MODULE VERIFICATION TEST. Power Top Verification Test

No

- Go To 2

Diagnostic Test

2. Open CAN B Bus (+) circuit




Turn the ignition off.
Disconnect the Power Top Control Module (PTCM) C1 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 PTCM C1 harness connector to the BCM harness connector.
Is the resistance below 5.0 ohm?

Yes

- Go To 3

No

- Repair the PTCM CAN B Bus (+) circuit for an open.
- Perform POWER TOP CONTROL MODULE VERIFICATION TEST. Power Top Verification Test

3. Open CAN B Bus (-) circuit




With the ignition off.
Measure the resistance of the CAN B Bus (-) circuit from the PTCM C1 harness connector to the BCM harness connector.
Is the resistance below 5.0 ohm?

Yes

- Replace the Power Top Control Module.Removal
- Perform POWER TOP CONTROL MODULE VERIFICATION TEST. Power Top Verification Test

No

- Repair the PTCM CAN B Bus (-) circuit for an open.
- Perform POWER TOP CONTROL MODULE VERIFICATION TEST. Power Top Verification Test