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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    Check short circuit
    If the wire harness is ground shorted as shown in fig. 5, Locate the section by conducting a resistance check with the body ground in step (b). Check the resistance with the body ground.  Disconnect connectors a and c and measure the resistance between terminals 1 and 2 ...

    Safety Connect
    *: If equipped Safety Connect is a subscription- based telematics service that uses Global Positioning System (GPS) data and embedded cellular technology to provide safety and security features to subscribers. Safety Connect is supported by Toyota's designated response center, which operates 24 hour ...

    Changing audio source
    1 Press the “AUDIO” button to display the audio source selection screen. If the audio source selection screen is not displayed, press the “AUDIO” button again. 2 Select the desired audio source. 1 Select the desired audio source then or to reorder. ...