DTC C1A24-64: No Temperature Increase When Compressor Requested - Signal plausibility failure: Action
- Refer to the appropriate system wiring diagram and check the air suspension air supply unit cylinder head temperature sensor circuit for open circuit, high resistance. Repair circuit as required, clear the DTCs and retest
- Check that the air suspension air supply unit cylinder head temperature sensor is securely attached to the cylinder head. Rectify as required, clear the DTCs and retest
- If the fault persists, install a new air suspension air supply unit cylinder head temperature sensor, clear the DTCs and retest
- If the fault persists, check the operation of the air suspension air supply unit. Repair or replace as required, clear the DTCs and retest