Diagnostic Test
WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK THE VEHICLE CONFIGURATION NOTE:
The DTC must be active and no BUS communication DTC's present before performing this test. If BUS communication DTC's are present, perform there respective test first. If the DTC is stored, erase the DTC and cycle the ignition. If the DTC resets and changes to active, then proceed.
- With the scan tool, check the vehicle configuration stored in the Totally Integrated Power Module (TIPM).
- With the scan tool, check the vehicle configuration stored in the A/C Heater Control (HVAC).
Pick the answer that best describes your findings:
TIPM has wrong or no vehicle configuration
- With the scan tool, program the proper vehicle configuration in the TIPM.
- Perform HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
HVAC has wrong vehicle configuration but TIPM has correct configuration
- Replace the A/C Heater Control in accordance with the Service Information.
- Perform HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
HVAC and TIPM have proper calibration and the DTC is active in the HVAC
- Check if other modules such as the Powertrain Control Module (PCM) have the wrong configuration stored in the controller and reprogram or replace as necessary. If all other modules show the proper configuration, replace the A/C Heater Control in accordance with the Service Information.
- Perform HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .