Test C: The Air Conditioning (A/C) Is Inoperative

PINPOINT TEST C: THE AIR CONDITIONING (A/C) IS INOPERATIVE

C1-C2:

C3-C5:

C5-C8:

C8-C10:

C10-C12:

C12-C14:

C14-C16:

C16-C18:

Normal Operation
Under normal operation, the A/C system is activated when the function selector switch is in the NORMAL A/C, MAX A/C, FLOOR/DEFROST, or DEFROST modes. The PCM controls the cycling of the A/C compressor clutch.

Possible Causes
- circuit 57 (BK) open
- circuit 198 (DG/OG) open or short to ground
- circuit 321 (GY/WH) open
- circuit 331 (PK/YE) open
- circuit 347 (BK/YE) open or short to power
- circuit 348 (VT) open or short to ground
- circuit 361 (RD) open
- circuit 441 (RD/YE) open or short to ground
- circuit 570 (BK/WH) open
- circuit 883 (PK/LB) open
- A/C cycling switch
- dual pressure switch
- A/C clutch solenoid
- A/C compressor clutch
- A/C clutch relay
- PCM
- function selector switch