Toyota Corolla (E120): Circuit description

The integration relay receives a switch signal from the master switch, door lock control switch or the driver’s door key and then drives the door lock motor.

Wiring diagram

Inspection procedure

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    Wiring diagram
    1 Inspect terminal voltage(pi) (a) turn Turn the ignition switch to on.  measure voltage between terminal 5 (pi) of cruise control ecu assy and body ground, when the cruise control main switch button is on and off. Ok: 2 Inspect combination meter assy 3 Check harn ...

    Circuit description
    When driving uphill under cruise control, in order to reduce the number of shifting due to on–off overdrive operation and to provide smooth driving, when down shifting in the electronically controlled transmission occurs, a signal to prevent upshift until the end of the uphill slope is sent ...

    Inspection procedure
    1 Check front airbag sensor (lh) circuit (to b+)(airbag sensor assy center – airbag sensor front lh) 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 airbag ...