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.
1985 Toyota 4Runner Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Without Super Monitor Display
- Prior to entering diagnostic mode, the following conditions must be met: Engine must be at normal operating temperature, battery voltage above 11 volts, transmission in "P" or "NEUTRAL", throttle valve fully closed and A/C off.
- Turn ignition on, but DO NOT start engine. Remove rubber cap from "CHECK ENGINE" connector. Using a jumper wire, jump terminals T - E1 of the connector together. See Fig 1.
Factory Service Tools
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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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