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.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE PCM
MODULE
TEST ACTION APPLICABILITY
1 Start and idle the engine.
With the DRBIIIt, select Engine and read the Engine RPM.
Was the DRBIIIt able to I/D or communicate with the PCM and read RPM?
All
Yes → Go To 2
No → Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2 With the DRBIIIt, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIIIt, read DTC’s.
Did this DTC reset?
All
Yes → Replace the Hands Free Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No → Test Complete.
518
TELECOMMUNICATION
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