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.
A/C Does Not Work
- AV SWITCH SELF-DIAGNOSIS
AV switch self-diagnosis. Refer to AV SWITCH SELF-DIAGNOSIS FUNCTION .
OK or NG
- OK: GO TO 2.
- NG: Check the malfunctioning parts.
- CHECK COMMUNICATION LINE
Check AV communication line. Refer to AV COMMUNICATION LINE CHECK (BETWEEN DISPLAY CONTROL UNIT AND AV SWITCH) .
OK or NG
- OK: GO TO 3.
- NG: Check the malfunctioning parts.
- CHECK CAN COMMUNICATION LINE
Check CAN communication line. Refer to CAN COMMUNICATION LINE CHECK .
OK or NG
- OK: Replace display control unit. Refer to REMOVAL AND INSTALLATION OF DISPLAY CONTROL UNIT .
- NG: After filling out CAN DIAG SUPPORT MONITOR check sheet, GO TO CAN COMMUNICATION .
Use the Manual With the Right Hardware
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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.
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