RPM Message Not Received

RPM 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 detect a Bus message indicating current engine RPM.





Diagnostic Test

1. ATTEMPT TO COMMUNICATE WITH THE PCM
Start and idle the engine.
With the scan tool, select Engine and read the engine RPM.
Was the scan tool able to I/D or communicate with the PCM and read RPM?

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

No

- Test complete.