Dodge Ram 2004 - Hvac System Test

Symptom:
*HVAC SYSTEM TEST
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE PCM
CHECK FOR HVAC RELATED DTCS IN THE PCM
CHECK FOR ACTIVE HVAC DTCS AND SYSTEM TEST FAULT MESSAGES
CHECK FOR HVAC RELATED DTCS IN THE PCM
MANUAL A/C SYSTEM TEST
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, attempt to communicate with the Powertrain Control Module
(PCM).
Was the DRBIIIt able to communicate with the PCM?
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 DRBIIIt, read Powertrain Computer DTCs.
Are any HVAC related DTCs present?
All
Yes → Refer to the Powertrain Diagnostic Procedures Manual for the
related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
413
HEATING & A/C