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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    If the vehicle becomes stuck
    Carry out the following procedures if the tires spin or the vehicle becomes stuck in mud, dirt or snow: 1 Stop the engine. Set the parking brake and shift the shift lever to P (automatic transmission or continuously variable transmission) or N (manual transmission). 2 Remove the mud, snow or s ...

    Precaution
    1. Precaution of headlight bulb replacement  if even a thin film of oil is left on the surface of the halogen lamp, its service life will be shortened because the lamp will be burn at a higher temperature.  handle any halogen lamp with great care. Dropping, hitting or damagin ...

    On–vehicle inspection
    1. Horn button assy (vehicles not involved in collision) Check the diagnostic system . visually check the following item with the horn button assy (with airbag) installed in the vehicle. Check cuts, minute cracks or marked discoloration on the horn button assy top surface and in the ...