Toyota Corolla (E120): Circuit description

This is the power source of the ecu, hence the actuators.

Wiring diagram

Wiring diagram

Inspection procedure

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    Terminals of ecu
    1. Inspect integration relay Disconnect the connector from the integration relay. check the continuity between each terminal of the disconnected connector and the body ground, as shown in the illustration and table. Standard: If the result is not as specified, the vehicle’s ...

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