HVAC System Test

Test 1-4:

Test 5:

Test 6:

Test 7:

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