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.
Section 481 (Ignition Switch & Key Unlock Warning System): Inspection
- INSPECT IGNITION SWITCH CONTINUITY IGNITION SWITCH CONTINUITY
Switch Position Tester Connection Specified Condition ACC 1 - 3 Continuity ON 1 - 2 - 3
5 - 6Continuity START 1 - 2
4 - 5 - 6Continuity If the continuity is not as specified, replace the switch.
- INSPECT KEY UNLOCK WARNING SWITCH CONTINUITY
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
KEY UNLOCK WARNING SWITCH CONTINUITYSwitch Position Tester Connection Specified Condition OFF (Key removed) 1 - 2 No continuity ON (Key set) 1 - 2 Continuity If the continuity is not as specified, replace the switch.
- INSPECT KEY UNLOCK WARNING BUZZER
Check the buzzer sound when the driver's door is opened and the key is inserted.
If operation is not as specified, replace the combination meter (See REMOVAL ).
NO RELATED
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.