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.
Door Lock Signal
Connect the connector to the relay. Connect the positive (+) lead from the voltmeter to terminal No. 1 and the negative (-) lead to terminal No. 6. Set the door lock control switch to Unlock, check that the voltage rises from zero volts to battery voltage for about 0.2 second. Reverse the polarity of the voltmeter leads. Set the door lock control switch to Lock, check that the voltage rises from 0 volts to battery voltage for about 0.2 second. If operation is not as specified, replace the relay.
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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.