HVAC System Test - ATC

Test 1 - 3:

Test 4:

SYMPTOM
ATC SYSTEM TEST

POSSIBLE CAUSES
- Attempt to communicate with the PCM, BCM, & ATC
- Check for HVAC related DTCs in the PCM & BCM
- Monitor the DRBIII(R) active DTCs
- Check for HVAC related DTCs in the PCM
- A/C system testing