FixVault

A/C Cut-off Control System Inspection

  1. Start the engine.
  2. Turn the A/C switch and fan switch on.
  3. Verify that the A/C compressor magnetic clutch actuates.
  4. Fully open the throttle valve and verify that the A/C compressor magnetic clutch does not actuate for 2-5 s  .
    • If it actuates, inspect as follows:
      • APP1 and APP2 PIDs (See PCM INSPECTION .)
      • A/C relay (See RELAY INSPECTION .)
      • Open circuit or short to ground in wiring harness and connectors (Ignition switch-A/C relay-PCM terminal 1AN)
      • A/C related parts