Toyota Corolla (E120): Circuit description

The key unlock warning switch comes on when the ignition key is inserted in the key cylinder and goes off when the ignition key is removed.

Wiring diagram

Inspection procedure

    Share this page:

    Other materials:

    Inspection procedure
    Hint: if dtcs besides misfire are memorized simultaneously, first perform the troubleshooting for them. Read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it ...

    For vehicles equipped with catalytic converter
    Caution: if large amount of unburned fuel flows into the converter, it may cause overheating and a fire hazard. To prevent this, observe the following precautions. Use only unleaded gasoline.  avoid prolonged idling. Avoid running the engine at idle speed for more than 20 minutes. ...

    Replacement
    1. Remove proportioning valve assy Using sst, disconnect the 5 brake tubes from the proportioning valve assy. Sst 09023–00100 Remove the 2 bolts and proportioning valve assy from the body. 2. Install proportioning valve assy Install the proportioning valve assy w ...