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.
Diagnosis Procedure
- INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to "COMPONENT FUNCTION CHECK ".
Which circuit is related to the incident?
Rear window defogger: GO TO 2.
Headlamp: GO TO 3.
Heater fan: GO TO 4.
- CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to "COMPONENT PARTS AND HARNESS CONNECTOR LOCATION ".
INSPECTION END
- CHECK HEADLAMP SYSTEM
Refer to HEADLAMP (FOR USA) - XENON TYPE - or HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM - .
INSPECTION END
- CHECK HEATER FAN CONTROL SYSTEM
Refer to "CONSULT-III FUNCTION (ECM) ".
INSPECTION END
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.