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 Test
Check ECU-IG fuse (15-amp) in instrument panel junction block. Replace fuse if necessary and check wiring for short. Disconnect wireless door lock ECU connector. Turn ignition switch to ON position. Using a voltmeter, check voltage between ground and wireless door lock ECU connector terminal No. 13 (Yellow/Green wire). See Figure. If battery voltage exists, check wireless door lock ECU pin voltages. See CIRCUIT TESTS (PIN VOLTAGE TESTS) . If battery voltage does not exist, check circuit between wireless door lock ECU and battery. See WIRING DIAGRAMS . Repair or replace circuit as necessary and retest system operation.
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.