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.
Activation Of Malfunction Indicator Light
- When the ignition switch is turned to ON (engine OFF), the malfunction indicator light in the combination meter illuminates.NOTE:
If the malfunction indicator light does not illuminate, perform diagnostics of the malfunction indicator light circuit or the combination meter circuit. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>WARNING LIGHT ILLUMINATION PATTERN>MALFUNCTION INDICATOR LIGHT DOES NOT COME ON .
- After starting the engine, the malfunction indicator light goes out. If it does not go off, any of the engine and emission control system has malfunction.
- If the diagnostic system detects a misfire which could damage the catalyst, the malfunction indicator light will blink at a cycle of 1 Hz.
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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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