Rpm Message Not Received - Dodge Ram 2004 Service Manual

TELECOMMUNICATION
Symptom:

RPM MESSAGE NOT RECEIVED

When Monitored and Set Condition:
RPM MESSAGE NOT RECEIVED
When Monitored: With the ignition on.
Set Condition: The Hands Free Module does not detect a Bus message indicating current
engine rpm.
ATTEMPT TO COMMUNICATE WITH THE PCM
MODULE
TEST
1 Start and idle the engine.
With the DRBIII , select Engine and read the Engine RPM.
Was the DRBIII able to I/D or communicate with the PCM and read RPM?
Yes → Go To 2
→ Refer to the Communication category for the related symptom(s).
No
2 With the DRBIII , erase DTC's.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII , read DTC's.
Did this DTC reset?
Yes → Replace the Hands Free Module in accordance with the service
→ Test Complete.
No
POSSIBLE CAUSES
ACTION
Perform BODY VERIFICATION TEST - VER 1.
information.
Perform BODY VERIFICATION TEST - VER 1.
518
APPLICABILITY
All
All