Toyota 4Runner: Do-it-yourself maintenance

Emission inspection and maintenance (I/M) programs

Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system. If the malfunction ind ...

Do-it-yourself service precautions

If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections. CAUTION The engine compartment contains many mechanisms and fluids that may move s ...

Other materials about Toyota 4Runner:

Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid Valve SLU) (P2757)
DESCRIPTION The ECM uses the signals from the throttle position sensor, air-flow meter, turbine (input) speed sensor, output speed sensor and crankshaft position sensor to monitor the engagement condition of the lock-up clutch. Then the ECM compares th ...

Security Indicator Light Circuit
DESCRIPTION When the theft deterrent system is in the disarmed state, the security indicator light flashes continuously when the engine immobiliser system is set, and does not illuminate when the engine immobiliser system is not set. Whe ...