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.
Ignition Switch Circuit: Description
When the ignition switch is turned to the ON position, the battery positive voltage is applied to terminal IG of the theft warning ECU. When the battery positive voltage is applied to terminal IG of the ECU while the theft deterrent system is operating, the warning stops. Furthermore, the power supplied from terminal IG of the ECU is used as the power for the door courtesy switch and position switch, etc.
NO RELATED
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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.