Toyota Corolla (E120): Customer problem analysis check

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Diagnosis system

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    Toyota Safety Sense 3.0 software update
    It is necessary to enter a connected services contract, provided by Toyota, to use these functions. For details, contact your Toyota dealer. WARNING ■For safe use When the Toyota Safety Sense 3.0 software is updated, the operating methods of functions may change. Using this system without knowing ...

    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 ...

    Circuit description
    In the diagram below, when the engine is cranked, current flows from terminal st2 of the ignition switch to the starter relay coil and also current flows to terminal sta of the ecm (sta signal). When the sta signal and ne signal are input to the ecm, tr is turned on, current flows to the c ...