Test Step 1 - HVAC System Test

NOTE:

Diagnose and repair all active DTCs before diagnosing and repairing stored DTCs. If active DTCs are present, perform the appropriate diagnostic procedure.

Make a selection based on the symptom, condition, or DTC that you want to diagnose.

Scan Tool Indicates HVAC Not Active On Bus

Refer to NO RESPONSE FROM A/C HEATER CONTROL MODULE .

Actuator Calibration Test

Go to Test Step Test Step 4 - Actuator Calibration Test .

A/C System Performance or Cooldown Test

Go to Test Step Test Step 2 - A/C Cooldown Test .