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

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    Inspection procedure
    1 Inspect parking brake switch circuit Check for open and short circuit in parking brake switch circuit 2 Inspect brake fluid level warning switch circuit Check the brake fluid level in reservoir.  check for open and shot circuit in brake fluid level warning switch circuit ...

    Replacement
    Hint: components: 1. Table of bolt, screw and nut Notice: be sure to tape the tip of the screwdriver when using it to disengage the meshing of the clips and claws. Hint: indicate the bolts, screws and nuts, which are necessary for installation and removal of the instrument panel, in th ...

    Oxygen sensor monitor (front and rear o2s system)
    Preconditions The monitor will not run unless: mil is off  drive pattern  connect the obd ii scan tool to the dlc3 to check monitor status and preconditions.  Start the engine and allow it to idle for 2 minutes or more.  Drive the vehicle at 25 mph ...