Chrysler Voyager. Manual — part 228
Symptom:
FCM, RADIO COMMUNICATION FAULT
When Monitored and Set Condition:
FCM, RADIO 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 radio for at least 5
seconds.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE RADIO
FRONT CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, attempt to communicate with the Radio.
Was the DRB able to I/D or communicate with the Radio?
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 DRB, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRB, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Front Control Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
339
COMMUNICATION
Symptom:
FCM, TCM COMMUNICATION FAULT
When Monitored and Set Condition:
FCM, TCM 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 Transmission Control
Module (TCM) for at least 5 seconds.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE TCM
FRONT CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, attempt to communicate with the TCM.
Was the DRB able to I/D or communicate with the TCM?
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 DRB, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRB, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Front Control Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
340
COMMUNICATION
Symptom:
INTERNAL BCM FAILURE
When Monitored and Set Condition:
INTERNAL BCM FAILURE
When Monitored:
The BCM detects an internal fault for 10 seconds.
Set Condition:
The DTC will set if the BCM detects an internal fault.
POSSIBLE CAUSES
INTERNAL BCM FAILURE
TEST
ACTION
APPLICABILITY
1
Connect the DRB to the Data Link Connector.
Turn the ignition on.
With the DRB, erase BCM DTC’s.
Turn the ignition off then turn the ignition on.
With the DRB, read BCM DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Body Control Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
341
COMMUNICATION
Symptom:
LEFT PSD MESSAGES NOT RECEIVED
When Monitored and Set Condition:
LEFT PSD MESSAGES NOT RECEIVED
When Monitored:
When the Body Control Module is awake.
Set Condition:
The BCM does not sense a response from the Left Power Sliding Door
Module.
POSSIBLE CAUSES
CHECK FOR DTCS
VERIFY DTC
ATTEMPT TO COMMUNICATE WITH THE LEFT SLIDING DOOR CONTROL MODULE
BODY CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read BCM DTC’s.
Are any IOD Wakeup power sliding door DTC’s set?
All
Yes
→ Refer to symptom list for problems related to the IOD wakeup
circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition on.
With the DRBIII
t, erase DTC’s.
Operate the left power sliding door with either the key fob or the overhead console.
With the DRBIII
t, read BCM DTC’s.
Did this DTC reset?
All
Yes
→ Go To 3
No
→ The condition that caused this DTC is currently not present. Use
the wiring diagrams/schematic as a guide, and inspect the related
wiring harness for a possible intermittent.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition on.
With the DRB, attempt to communicate with the Left Sliding Door Control Module.
Was the DRB able to I/D or communicate with the Left Sliding Door Control Module?
All
Yes
→ Go To 4
No
→ Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
342
COMMUNICATION
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