Toyota Corolla (E120): Circuit description

Hint:

Hint

: there is a case that hand–held tester cannot be used when ecu is abnormal.

Wiring diagram

Inspection procedure

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    Terminals of ecu
    1. Inspect integration relay Disconnect the connector and check the continuity of each terminal of the disconnected connector. Standard : If the result is not as specified, the vehicle’s side may malfunction. Reconnect the connector and check each terminal. Standard: If ...

    Cassette tape cannot be ejected
    Wiring diagram Wiring diagram 1 Check if radio auto–search functions properly Check if the radio auto–search function properly.  Perform the auto–research of the radio and check that the operation is normal. Standard: malfunction disappear. 2 Press ”eject” and ...

    Inspection procedure
    1 Check side squib(lh) circuit(airbag sensor assy center – front seat airbag assy 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 front seat airbag assy ...