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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    Luggage compartment door
    Adjustment 1. Inspect luggage compartment door panel sub–assy  check that the clearance is within the standard value. 2. Adjust luggage compartment door panel sub–assy For forward/rearward and right/left adjustments, loosen the bolts. Torque: 7.0 N·m (71 kgf·cm, 62 i ...

    On–vehicle inspection
    1. Inspect pressure switch no.1. Magnetic clutch control: inspect pressure switch operation.  Set on the manifold gauge set.  Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (–) lead to terminal 1.  Check continuity between termin ...

    Check and replace ecu
    Notice: start an inspection of the connector from the backside of the connector on the wire harness side with the connector connected to the ecu. When no measurement condition is specified, perform the inspection with the engine stopped and also the ignition switch on. First check the ec ...