Toyota Corolla (E120): Inspection procedure

1 Inspect skid control ecu connector(+bs terminal voltage)

  1. Disconnect the skid control ecu connector.
  2.  measure the voltage between terminals +bs (2) and gnd (1, 23) of skid control ecu harness side connector.

    Voltage: 10 – 14 v

2 Reconfirm dtc

2 Reconfirm dtc

  1. Check the dtc .

    Ok : normal code

3 Inspect contact condition

3 Inspect contact condition

  1. Inspect the condition of the each connector from engine room r/b to skid control ecu.

Check and replace brake actuator assy

Check and replace brake actuator assy

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    Circuit description
    The purpose of this circuit is to prevent the engine from stalling while driving in lock–up condition, when brakes are suddenly applied. When the brake pedal is depressed, this switch sends a signals to the ecm. Then the ecm cancels the operation of the lock–up clutch while braking is i ...

    Audio unit
    1 Bluetooth® connection status If “BT” is not displayed, the Bluetooth® audio/phone cannot be used. 2 Display A message, name, number, etc. is displayed. Lower-case characters and special characters cannot be displayed. 3 Displays the set up menu 4 Selects items such as menu and number ...

    How to proceed with troubleshooting
    The hand–held tester can be used at step 3, 4, 5, 7, 10. 1 Vehicle brought to workshop 2 Customer problem analysis 3 Connect hand–held tester to dlc3 Hint: if the display indicates a communication fault in the tool, inspect dlc3. 4 Check dtc and freeze frame data Hint: record or pr ...