Chrysler Town, Dodge Caravan. Manual — part 877
Symptom:
NO FCM MESSAGES RECEIVED
POSSIBLE CAUSES
DTC PRESENT
NO RESPONSE - PCI BUS - FCM
CMTC/EVIC MODULE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase DTCs.
Cycle the ignition and wait approximately 1 minute.
With the DRBIII
t, read DTCs.
Did this DTC reset?
All
Yes
→ Go To 2
No
→ The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition on.
With the DRBIII
t, attempt to I/D or communicate with the FCM.
Was the DRBIII
t able to communicate with the FCM?
All
Yes
→ Replace the CMTC or EVIC in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Refer to the COMMUNICATION category and perform the appro-
priate symptom.
Perform BODY VERIFICATION TEST - VER 1.
744
OVERHEAD CONSOLE
Symptom:
NO PCM MESSAGES RECEIVED
POSSIBLE CAUSES
DTC PRESENT
NO RESPONSE - PCI BUS - PCM
CMTC/EVIC MODULE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase DTCs.
Cycle the ignition and wait approximately 15 seconds.
With the DRBIII
t, read DTCs.
Did this DTC reset?
All
Yes
→ Go To 2
No
→ The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition on.
With the DRBIII
t, enter Body Computer, System Tests, then PCM Monitor.
Does the DRBIII
t display PCM Active on the Bus?
All
Yes
→ Replace the CMTC or EVIC in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Refer to the COMMUNICATION category and perform the appro-
priate symptom.
Perform BODY VERIFICATION TEST - VER 1.
745
OVERHEAD CONSOLE
Symptom:
NO TCM MESSAGES RECEIVED
POSSIBLE CAUSES
DTC PRESENT
NO RESPONSE - PCI BUS - TCM
CMTC/EVIC MODULE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase DTCs.
Cycle the ignition and wait approximately 1 minute.
With the DRBIII
t, read DTCs.
Did this DTC reset?
All
Yes
→ Go To 2
No
→ The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition on.
With the DRBIII
t, attempt to I/D or communicate with the TCM.
Was the DRBIII
t able to communicate with the TCM?
All
Yes
→ Replace the CMTC or EVIC in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Refer to the COMMUNICATION category and perform the appro-
priate symptom.
Perform BODY VERIFICATION TEST - VER 1.
746
OVERHEAD CONSOLE
Symptom:
OTIS MODULE MESSAGE MISMATCH
When Monitored and Set Condition:
OTIS MODULE MESSAGE MISMATCH
When Monitored:
With the ignition on.
Set Condition:
BCM has learned EC Mirror but the vehicle is Not equipped with EC
Mirror.
POSSIBLE CAUSES
INTERMITTENT CONDITION
EVIC COMMUNICATION
CMTC/EVIC MODULE
BODY CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
NOTE: All communication DTC(s) that may have set along with this DTC
must be diagnosed before continuing.
NOTE: If the DTC EC Mirror Day/Night Line Fault is present in the EVIC
along with this DTC, diagnose the EC Mirror Day/Night Line Fault first
before continuing.
With the DRBIII
t, erase the DTC.
Cycle the ignition on and off several times, leaving the ignition on for at least 15
seconds.
With the DRBIII
t, read DTCs.
Did the DTC OTIS Module Message Mismatch reset?
All
Yes
→ Go To 2
No
→ Go To 4
2
Turn the ignition on.
With the DRBIII
t, attempt to communicate with the CMTC/EVIC Module.
Can communication be established with the CMTC/EVIC Module?
All
Yes
→ Go To 3
No
→ Refer to the Communication Category and perform the appropri-
ate symptom.
Perform BODY VERIFICATION TEST - VER 1.
747
OVERHEAD CONSOLE
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