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:

Vehicle data recordings
Your Toyota is equipped with several sophisticated computers that will record certain data, such as: • Engine speed • Accelerator status • Brake status • Vehicle speed • Shift position The recorded data varies according to the vehicle gr ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK CLEARANCE WARNING ECU (a) Disconnect the F95 clearance warning ECU assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Col ...