Compressor HVAC: Testing and Inspection

Refer to "Heating and Air Conditioning : System Diagnosis : Diagnostic Test Procedures : Automatic Air Conditioning (Auto A/C)".




Notes for Diagnosis:
- The A/C Pushbutton control module (N22) has DTC memory and data output. The diagnostic trouble codes and data are displayed via the temperature display window. The stored DTC's will remain in memory even with the vehicle battery disconnected.
- The DTC memory differentiates between continuous and intermittent faults.
- All DTC's can also be read with the Hand-Held Tester (HHT).