PCM Messages Not Received

PCM MESSAGES NOT RECEIVED

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on.

- Set Condition:
The Instrument Cluster detects no PCM bus messages received for 6 seconds.





Diagnostic Test

1. NO RESPONSE - PCI BUS - PCM
Turn the ignition on.
With the scan tool, select Body Controller and System Test.
Does the scan tool display PCM Active on the Bus?

Yes

- Go To2

No

- Refer to symptom *NO RESPONSE FROM PCM (PCI BUS) in Manufacturer Trouble Codes. Communications - Verbose Codes
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. INSTRUMENT CLUSTER
With the scan tool, erase DTCs.
Cycle the ignition and wait approximately 1 minute.
With the scan tool, read DTCs.
Did this DTC reset?

Yes

- Replace the Instrument Cluster.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

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 BODY VERIFICATION TEST - VER 1. Body Verification Test