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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    On–vehicle inspection
    1. Inspect pressure switch no.1. Magnetic clutch control: inspect pressure switch operation.  Set on the manifold gauge set.  Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (–) lead to terminal 1.  Check continuity between termin ...

    Cd cannot be inserted or is ejected right after insertion
    Wiring diagram Inspection procedure 1 Check if a proper cd is inserted Check that a proper cd is inserted.  Make sure that the cd is normal audio cd, and that there is no deformation, flaw, stain, burr and other defects on the cd. Standard: normal audio cd. Reference: ...

    Inspection
    1. Inspect defogger relay (marking: def) Remove the defogger relay from the instrument panel j/b.  inspect the defogger relay. Standard: If the result is not as specified, replace the relay ...