Checking A/C System Operation With No DTC's

Tests 1 - 3:

Tests 4 - 9:

Tests 10 - 12:

SYMPTOM
CHECKING A/C SYSTEM OPERATION WITH NO DTCS

POSSIBLE CAUSES
- DTC And Communication Present
- A/C Select Circuit Open
- A/C Select In HVAC
- PCM
- A/C Request Circuit Open
- Refrigeration System Not Properly Charged
- High Press Cut-Off Switch
- Low Pressure Switch
- A/C Clutch Coil
- A/C Compressor Clutch Ground Circuit Open
- A/C Clutch Relay Output Circuit Open
- Fused B(+) Circuit Open
- A/C Clutch Relay