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:

    Monitor description
    The battery supplies electricity to the ecm even when the ignition switch is off. This electricity allows the ecm store data such as dtc history, freeze frame data, fuel trim values, and other data. If the battery voltage falls below a minimum level, the ecm will conclude that there is a fault ...

    Inspection
    1. Fuel injector assy Inspect injector resistance.  Using an ohmmeter,measure the resistance between the terminals. Resistance: 13.4 – 14.2 Ω at 20 c (68 f) Inspect injector inspection Caution: keep injector clear of sparks during the test.  Purch ...

    Inspection procedure
    1 Check side air bag sensor assy rh Sst 09843–18040 Connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.  turn the ignition switch to on, and wait at least for 20 seconds.  clear the dtc stored in memory .  turn the ignition swi ...