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.
Engine Switch: Inspection
- INSPECT ENGINE SWITCH
- Measure the resistance according to the value(s) in the table below.
Standard resistance
ENGINE SWITCHTester Connection Switch Position Specified Condition 7(SS1)-5(GND) Not pushed 10 kΩ or higher 2 (SS2) - 5 (GND) Not pushed 10 kΩ or higher 7 (SS1) - 5 (GND) Pushed Below 1 Ω 2 (SS2) - 5 (GND) Pushed Below 1 Ω Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the result is not as specified, replace the engine switch.
- Apply battery voltage between the terminals of the switch, and check the illumination condition of the switch.
HINT:
- If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator will not illuminate.
- If the voltage is too low, the indicator will not illuminate.
OK
ENGINE SWITCH VOLTAGE MEASUREMENTSMeasurement Condition Specified Condition Battery positive (+) → Terminal 11 (SWIL)
Battery negative (-) → Terminal 4 (COM) or 5 (GND)Illuminates Battery positive (+) → Terminal 12 (INDS)
Battery negative (-) → Terminal 4 (COM) or 5 (GND)Illuminates Battery positive (+) → Terminal 13 (INDW)
Battery negative (-) → Terminal 4 (COM) or 5 (GND)Illuminates Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the result is not as specified, replace the engine switch.
- Measure the resistance according to the value(s) in the table below.
Use the Manual With the Right Hardware
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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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