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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    Inspection procedure
    1 Inspect stop lamp switch assy 2 Check harness and connector(stop lamp switch assy – ecm)   Install the stop lamp switch assy.  disconnect the ecm connector.  measure the voltage according to the value(s) in the table below when the brake pedal is depressed and rele ...

    On–vehicle inspection
    1. Inspect refrigerant pressure with manifold gauge set  this is a method in witch the trouble is located by using a manifold gauge set. Read the manifold gauge pressure when the these conditions are established. Test conditions: temperature at the air inlet with the switch set ...

    Engine immobilizer system
    The vehicle's keys have built-in transponder chips that prevent the engine from starting if a key has not been previously registered in the vehicle's on-board computer. Never leave the keys inside the vehicle when you leave the vehicle. This system is designed to help prevent vehicle theft but doe ...