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:

    Starting the engine
    ► Automatic transmission or continuously variable transmission 1 Check that the parking brake is set. 2 Check that the shift lever is set in P. 3 Firmly depress the brake pedal. 4 Turn the engine switch to the “START” position and start the engine. ► Manual transmission 1 Che ...

    Fog light switch
    The fog lights secure excellent visibility in difficult driving conditions, such as in rain and fog. 1 Turns the front fog lights off 2 Turns the front fog lights on *1: For U.S.A. *2: For Canada ■Fog lights can be used when The headlights are on in low beam. ...

    Inspection procedure
    1 Inspect dlc3 terminal voltage Turn the ignition switch to on.  measure voltage between terminals 13 (tc) and 4 (cg) of dlc3. Ok: voltage: 10 – 16 v 2 Check harness and connector(between cruise control ecu assy and dlc3) Check for open and short circuit in harness ...