Index Chrysler Chrysler TOWN & COUNTRY, VOYAGER, Dodge Caravan - service repair manual 2001-2007 year
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Symptom: *HVAC SYSTEM TEST POSSIBLE CAUSES ATTEMPT TO COMMUNICATE WITH THE PCM/ECM, THE BCM, AND THE FCM CHECK FOR HVAC RELATED DTCS IN THE PCM/ECM CHECK FOR BCM DTCS CHECK FOR FCM DTCS CHECK FOR ACTIVE ATC DTCS CHECK FOR AC COOLDOWN TEST FAULT MESSAGES CHECK FOR HVAC RELATED DTCS IN THE PCM/ECM MANUAL A/C SYSTEM TEST TEST ACTION APPLICABILITY 1 Turn the ignition on. t, attempt to communicate with the Powertrain/Engine Control Module. t, attempt to communicate with the Body Control Module. With the DRBIII t, attempt to communicate with the Front Control Module. Was the DRBIII t able to communicate with the PCM/ECM, the BCM, and the FCM? 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 DRBIII t, read Powertrain/Engine Computer DTC’s. Are any HVAC related DTCs present? All Yes → Refer to the Powertrain Diagnostic Procedures Manual for the related symptom(s). No → Go To 3 3 With the DRBIII t, read Body Computer DTC’s. Are any DTCs present? All Yes → Refer to the appropriate catagory for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1. No → Go To 4 4 With the DRBIII t, read Front Control Module DTC’s. Are any DTCs present? All Yes → For FCM DTCs related to the blower relay circuits, refer to the Heating & A/C catagory. For all other FCM DTCs, refer to the No → Go To 5 268 AUTOMATIC TEMPERATURE CONTROL |