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:

Inspection
INSPECTION PROCEDURE 1. INSPECT GENERATOR WITH CLUTCH PULLEY (a) Hold the center of the generator with clutch pulley and check that the outer ring turns counterclockwise and does not turn clockwise. Text in Illustration Free ...

ECU Initial Setting Incomplete (C120A)
DESCRIPTION w/ Downhill Assist Control or w/ Crawl Control: When the master cylinder solenoid (skid control ECU) is replaced, the master cylinder solenoid (skid control ECU) must be informed that the vehicle is equipped with downhill assist control and/o ...