FixVault

A/C Cut-off Control System Inspection

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