HVAC, MTC

B222A-00-VEHICLE LINE MISMATCH

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The A/C Heater Controller checks for vehicle configuration using communication over the BUS. If the stored configuration does not match the configuration stored in the controller this DTC will set.

- When Monitored:
With the ignition on.

- Set Condition:
If the stored configuration does not match the configuration stored in the controller.





Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview.
CHECK THE VEHICLE CONFIGURATION

NOTE: The DTC must be active and no BUS communication DTCs present before performing this test. If BUS communication DTCs 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.

1. With the scan tool, check the vehicle configuration stored in the Totally Integrated Power Module (TIPM).
2. 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 HVAC Verification Test.

HVAC has wrong vehicle configuration but TIPM has correct configuration

- Replace the A/C Heater Control.
- Perform HVAC VERIFICATION TEST 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.
- Perform HVAC VERIFICATION TEST HVAC Verification Test.