HVAC System Test

Test 1 - 4:

Test 5 - 6:

SYMPTOM
HVAC SYSTEM TEST - MTC

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 HVAC DTCs and system tests fault messages
- Check for HVAC related DTCs in the PCM/ECM
- Manual A/C system test