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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    Hydraulic test
    1. Perform hydraulic test Measure the line pressure. Notice: Do the test at normal operation atf temperature 50 to 80 °c (122 to 176 °f). The line pressure test should always be carried out in pairs. One technician should observe the conditions of wheels or wheel stopper outsi ...

    Inspection procedure
    Hand–held tester: 1 Perform active test by hand–held tester(operation of circuit opening relay) Connect the hand–held tester to the dlc3.  turn the ignition switch on and push the hand–held tester main switch on.  select the item ”diagnosis / enhanced obd ii / active ...

    Inspection procedure
    Hint: when the throttle position is slightly opened (the accelerator pedal is slightly depressed) because a floor carpet is overlapped on the accelerator pedal, or if not fully releasing the accelerator pedal, etc., Dtc p505 will possibly be detected. Read freeze frame data using the ...