A/C Cut-off Control System Inspection

WARNING: This page is about a different car, the 2018 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

Start the engine.
Turn the A/C switch on.
Verify that the A/C compressor magnetic clutch actuates.
- If it does not actuate, perform the symptom troubleshooting "NO. 23 A/C DOES NOT WORK SUFFICIENTLY". (See NO. 23 A/C Does Not Work Sufficiently .)
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 the following:
  - A/C relay (See RELAY INSPECTION .)
  - Open or short to ground in wiring harness and connectors (IG1 relay-A/C relay-PCM terminal 2BB)
  - A/C related parts
  - APP1, APP2 PIDs (See PCM Inspection .)