VIN Message Not Received

VIN MESSAGE NOT RECEIVED

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on.

- Set Condition:
The Hands Free Module does not receive the VIN message from the PCM.





Diagnostic Test

1. ATTEMPT TO COMMUNICATE WITH THE PCM
Turn the ignition on.
With the scan tool, attempt to communicate with the PCM.
Was the scan tool able to I/D or communicate with the PCM?

Yes

- Go To2

No

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

2. CHECK PCM IS ACTIVE ON BUS
Turn the ignition on.
With the scan tool, select System Monitors then J1850 Module Scan.
Is the PCM one of the modules present on the bus?

Yes

- Go To3

No

- Refer to the Communication category. Communications - Verbose Codes
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

3. MODULE
With the scan tool, erase DTC's.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the scan tool, read DTC's.
Did this DTC reset?

Yes

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

No

- Test Complete.