Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2016 Mazda 6 Grand TouringFACTORY OEM SERVICE PROCEDURE
A/C Cut-off Control System Inspection
- 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 [SKYACTIV-G 2.5] .)
- 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 (Front body control module (FBCM)- A/C relay-PCM terminal 2AF)
- A/C related parts
- APP1, APP2 PIDs (See PCM INSPECTION [SKYACTIV-G 2.5] .)
- If it actuates, inspect the following:
RELATED PID SPECIFICATIONS
| Item (definition) | Unit/Condition | Definition | Condition/Specification (Reference) |
|---|---|---|---|
| APP1 | % | APP sensor No. 1 |
|
| V |
|
||
| APP2 | % | APP sensor NO. 2 |
|
| V |
|
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.