Toyota Corolla (E120): Circuit description

Wiring diagram

Wiring diagram

Inspection procedure

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    Inspection procedure
    Hint: troubleshoot each trouble symptom in accordance with the chart below. 1 Clear dtc Connect the hand–held tester or the obd ii scan tool to the dlc 3.  turn the ignition switch on and push the hand–held tester or the obd ii scan tool main switch on.  read the dtc . ...

    If the engine will not start
    If the engine will not start even though correct starting procedures are being followed , consider each of the following points: The engine will not start even though the starter motor operates normally. One of the following may be the cause of the problem: ● There may not be sufficient f ...

    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 ...