A/C System Does Not Come On (Both Fans and the A/C Compressor Do Not Work); Heater Is OK

A/C system does not come on (both fans and the A/C compressor do not work); heater is OK

Diagnostic Procedure:

1. A/C signal circuit troubleshooting Climate Control Unit A/C Signal Circuit Troubleshooting

2. A/C pressure sensor troubleshooting: A/C pressure sensor circuit low voltage, P0532 A/C pressure sensor circuit high voltage P0533

Also check for:

- HVAC DTCs Initial Inspection and Diagnostic Overview
- Powertrain DTCs Initial Inspection and Diagnostic Overview
- Cleanliness and tightness of all terminals