( TL19E00G10500000000HAAT08 )

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 A/C pressure sensor troubleshooting: A/C pressure sensor circuit low voltage, R20A3 engine model, K24Z3 engine model, A/C pressure sensor circuit high voltage, R20A3 engine model, K24Z3 engine model

Also check for

- HVAC DTCs
- Powertrain DTCs, R20A3 engine model, K24Z3 engine model
- Cleanliness and tightness of all terminals