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.
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HOMESERVICE MANUALSTOYOTA20104 RUNNER 2WD L4-2.7L (2TR-FE)REPAIR AND DIAGNOSISINSTRUMENT PANEL, GAUGES AND WARNING INDICATORSTESTING AND INSPECTIONPINOUT VALUES AND DIAGNOSTIC PARAMETERSKEY REMINDER WARNING SYSTEM
2010 Toyota 4 Runner 2WD L4-2.7L (2TR-FE)
Key Reminder Warning System
2010 Toyota 4 Runner 2WD L4-2.7L (2TR-FE)SECTION Key Reminder Warning System
DOOR LOCK: KEY REMINDER WARNING SYSTEM: TERMINALS OF ECU
1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Remove the main body ECU (multiplex network body ECU) Removal.
(b) Measure the voltage and resistance according to the value(s) in the table below.
(c) If the result is not as specified, there may be a malfunction in the wire harness.
(d) Install the main body ECU (multiplex network body ECU).
(e) Measure the voltage according to the value(s) in the table below.
(f) If the result is not as specified, the main body ECU (multiplex network body ECU) or driver side junction block assembly may have a malfunction.
RENDER: 1.0x
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.