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:

Lost Communication with ECM/PCM "A" (U0100/71,U0122/71,U0124/71,U0126/71)
DESCRIPTION DTC Code DTC Detection Condition Trouble Area U0100/71 While driving at 30 km/h (19 mph), the ECM indicates a CAN communication stop for 3 seconds or more. CAN communicati ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use these procedures to troubleshoot the automatic running board system. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT ...