Fcm, Pcm Communication Fault - Chrysler Town and Country 2003 Owner's Manual

Symptom:

FCM, PCM COMMUNICATION FAULT

When Monitored and Set Condition:
FCM, PCM COMMUNICATION FAULT
When Monitored: With the ignition in run, and the IOD fuse installed.
Set Condition: The FCM does not receive any messages from the PCM for at least 5
seconds.
PCM COMMUNICATION FAULT
ATTEMPT TO COMMUNICATE WITH THE PCM
PCI BUS CIRCUIT OPEN
POWERTRAIN CONTROL MODULE
TEST
1 Turn the ignition on.
With the DRB, enter Instrument Cluster, System Tests then PCM Monitor.
Does the DRB display: PCM is active on BUS?
Yes → Erase the DTC, if DTC resets, replace the Front Control Module
→ Go To 2
No
2 Turn the ignition on.
With the DRB, attempt to communicate with the PCM.
Was the DRB able to communicate with the PCM?
Yes → Go To 3
→ Refer to the communication category and perform the appropriate
No
POSSIBLE CAUSES
ACTION
in accordance with the service information.
Perform BODY VERIFICATION TEST - VER 1.
symptom.
Perform BODY VERIFICATION TEST - VER 1.
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COMMUNICATION
APPLICABILITY
All
All