Toyota Corolla (E120): Ecu power source circuit

Circuit description

This circuit provides power to operate the tvip ecu.

Wiring diagram

Inspection procedure

Inspection procedure

1 Check fuse (ecu–b)

  1. Remove the fuse from the instrument panel j/b.
  2.  check the continuity of the fuse.

Standard: continuity

2 Check tvip ecu

2 Check tvip ecu

  1. Disconnect the tvip ecu connector.
  2.  measure the voltage between the terminals of the ecu connector, as shown in the illustration and table.

Standard:

3 Check wire harness (tvip ecu  body ground)

3 Check wire harness (tvip ecu  body ground)

  1. Disconnect the tvip ecu connector.
  2. check the connector on the harness side, as shown in the illustration and table.

Standard:

Check and replace tvip ecu

Check and replace tvip ecu

    Share this page:

    Other materials:

    Before driving
    Floor mat Use only floor mats designed specifically for vehicles of the same model and model year as your vehicle. Fix them securely in place onto the carpet. 1 Insert the retaining hooks (clips) into the floor mat eyelets. 2 Turn the upper knob of each retaining hook (clip) to secure the flo ...

    Driving
    ►  Automatic transmission or continuously variable transmission 1 With the brake pedal depressed, shift the shift lever to D. (, 174, 176) 2 Release the parking brake. 3 Gradually release the brake pedal and gently depress the accelerator pedal to accelerate the vehicle. ► ...

    Warning buzzer does not sound (key reminder warning, light reminder warning)
    Wiring diagram Inspection procedere 1 Check buzzer Check that all of the warning buzzers sound. 2 Inspect front door courtesy lamp switch assy 3 Inspect un–lock warning switch assy 4 Check harness and connector(between un–lock warning switch and combination meter as ...