Pcm Messages Not Received (Export Only) - Chrysler Town and Country 2003 Owner's Manual

VEHICLE THEFT/SECURITY
Symptom:

PCM MESSAGES NOT RECEIVED (EXPORT ONLY)

When Monitored and Set Condition:
PCM MESSAGES NOT RECEIVED (EXPORT ONLY)
When Monitored: Continuously with the ignition on.
Set Condition: The RKE/Thatcham Alarm Module does not receive any messages from
the PCM for at least 5 seconds.
INTERMITTENT CONDITION
PCM COMMUNICATION FAILURE
PCI BUS CIRCUIT OPEN
RKE/THATCHAM ALARM MODULE - INTERNAL MALFUNCTION
TEST
1 Turn the ignition on.
With the DRBIII , attempt to communicate with the PCM.
Was the DRBIII able to communicate with the PCM?
Yes → Go To 2
→ Refer to the Communication category and perform the appropri-
No
2 Turn the ignition on.
With the DRBIII , attempt to communicate with the RKE/Thatcham Alarm Module.
Was the DRBIII able to communicate with the RKE/Thatcham Alarm Module?
Yes → The condition that caused this symptom is currently not present.
→ Go To 3
No
3 Turn the ignition off.
Disconnect the negative battery cable.
Disconnect the RKE/Thatcham Alarm Module 16-way harness connector.
Disconnect the DRBIII from the data link connector.
Measure the resistance of the PCI Bus circuit between the data link connector and
the Thatcham Alarm Module connector.
Is the resistance below 5.0 ohms?
Yes → Replace the RKE/Thatcham Alarm Module.
→ Repair the PCI Bus circuit for an open.
No
POSSIBLE CAUSES
ACTION
ate symptom.
Perform VTSS VERIFICATION TEST - 1A.
Inspect the related wiring harness for a possible intermittent
condition.
Perform VTSS VERIFICATION TEST - 1A.
Perform VTSS VERIFICATION TEST - 1A.
Perform VTSS VERIFICATION TEST - 1A.
958
APPLICABILITY
All
All
All