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
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.