Tx Failure (Active) - Mtc - Chrysler Town and Country 2003 Owner's Manual

HEATING & A/C
Symptom:

TX FAILURE (ACTIVE) - MTC

When Monitored and Set Condition:
TX FAILURE (ACTIVE) - MTC
When Monitored: When the ignition is on.
Set Condition: This DTC will set if the A/C - Heater Control Module is unable to send a
message.
ATTEMPT TO COMMUNICATE WITH THE HVAC MODULE
ADDITIONAL CODE(S) PRESENT
ATTEMPT TO COMMUNICATE WITH THE PCM/ECM, BCM, AND FCM
A/C - HEATER CONTROL MODULE
TEST
1 Turn the ignition on.
With the DRBIII , attempt to communicate with the HVAC Module.
Was the DRBIII able to I/D or communicate with the HVAC Module?
Yes → Go To 2
→ Refer to Communication for the related symptom(s).
No
2 Turn the ignition on.
With the DRBIII , read HVAC DTCs.
Does the DRBIII display any additional HVAC DTCs?
Yes → Return to the symptom list and choose the symptom(s).
→ Go To 3
No
3 Turn the ignition on.
With the DRBIII , attempt to communicate with the PCM/ECM.
With the DRBIII , attempt to communicate with the BCM.
With the DRBIII , attempt to communicate with the FCM.
Was the DRBIII able to I/D or communicate with the PCM/ECM, BCM and FCM?
Yes → Go To 4
→ Refer to Communication for the related symptom(s).
No
POSSIBLE CAUSES
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
556
APPLICABILITY
All
All
All