Toyota Corolla (E120): Circuit description

If the ignition switch is turned to the on position, battery positive voltage is applied to the switches, such as terminal ig of the ecu.

Wiring diagram

Inspection procedure

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    Diagnosis system
    Description  when troubleshooting obd ii vehicles, the only difference from the usual troubleshooting procedure is that you need to connect an obd ii scan tool complying with sae j1987 or a hand–held tester to the vehicle, and read off various data output from the vehicle†...

    On–vehicle inspection
    1. Inspect brake booster Airtightness check.  Start the engine and stop it after 1 or 2 minutes. Depress the brake pedal several times slowly. Hint: if the pedal goes down farthest at the 1st time, but gradually rises after the 2nd or 3rd time, the booster is airtight. ...

    Adjusting the mirrors
    Make sure that you can see backward clearly by adjusting the inside and outside rear view mirrors properly. CAUTION Observe the following precautions. Failure to do so may result in death or serious injury. ●Do not adjust the position of the driver’s seat while driving. Doing so could ...