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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    Spiral cable sub–assy
    Components Replacement Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Place front wheels facing straight ahead  check that the front wheels are facing straight ahead. 4. Remove horn button assy 5. Remove steering wheel assy  sst 09950–50013 ...

    Do-it-yourself service precautions
    If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections. CAUTION The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become electrically energized. To avoid death or serious injury, observe t ...

    Inspection procedure
    1 Check d squib circuit(airbag sensor assy center – horn button assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the horn button assy.  connect the ...