Toyota Corolla (E120): Circuit description

If the ignition switch is turned to the on position, battery positive voltage is applied to the switches, such as terminal ig of the ecu.

Wiring diagram

Inspection procedure

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    Using a Bluetooth® Phone
    The hands-free system is a function that allows you to use your cellular phone without touching it. This system supports Bluetooth®. Bluetooth® is a wireless data system that allows the cellular phone to wirelessly connect to the hands-free system and make/receive calls. Before making a ph ...

    Wiring
    Power source Location ...

    On–vehicle inspection
    1. Check fuel pump operation Connect the hand–held tester to the dlc3.  turn the ignition switch on and hand–held tester main switch on. Notice: do not start the engine.  select the active test mode on the hand–held tester.  please refer to the hand–held te ...