BCM Messages Not Received

BCM MESSAGES NOT RECEIVED

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on.

- Set Condition:
This DTC will set if the NAV Module does not receive PCI bus messages from the BCM for 5 seconds. The code will clear after 50 ignition cycles.





Diagnostic Test

1. DTC INTERMITTENT CONDITION
With the scan tool, erase DTCs.
Cycle the ignition switch from on to off and then back to on.
Turn the Navigation System on and try to select a location.
With the scan tool, read DTCs.
Does the scan tool display BCM MESSAGES NOT RECEIVED?

No

- The condition is not present at this time. Monitor scan tool parameters while wiggling the related wire harness. Search for any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness and connector terminals.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

Yes

- Go To2

2. COMM FAULT PRESENT
Turn the ignition on.
With the scan tool, attempt to communicate with the BCM.
With the scan tool, read DTCs.

NOTE: If there are any BCM DTC's present, diagnose and repair them before proceeding with this test.

Was the scan tool able to communicate with the BCM?

Yes

- Replace the Navigation Module.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- REFER TO COMMUNICATION. No Response From BCM (Body Control Module)
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.