TOYOTA PARKING ASSIST-SENSOR SYSTEM OPERATION CHECK


  1. DETECTION RANGE MEASUREMENT AND INDICATOR CHECK


    1. Turn the ignition switch ON.

    2. Move the shift lever to R.

      Note

      Apply the parking brake securely so that the vehicle does not move.

    3. Turn the clearance sonar main switch on.

    4. Move a φ 60 mm (2.36 in.) pole around the sensors to measure the detection ranges of the sensors.

      A01J5ANE02

      Note

      The measured detection ranges are for a φ 60 mm (2.36 in.) pole. The detection ranges for walls and other obstacles are different.

    5. Check the sounding of the buzzer when the No. 1 ultrasonic sensors detect an obstacle.

      Operation Condition
      Ignition Switch Clearance Sonar Main Switch Shift Lever
      ON On R

      1. Check that the buzzer sounds with the clearance sonar main switch on as shown in the illustration.

        A01J6BQE01

        *1: A φ 60 mm (2.36 in.) pole is used as an obstacle.

        *2: A wall is used as an obstacle.

        Tech Tips

        Since sound waves are used for the detection range measurement, the detection ranges may slightly vary due to the outside air temperature.

  2. CHECK INITIAL CHECK FUNCTION


    1. A01J4JFE01

      Turn the ignition switch ON and turn the clearance sonar main switch on. After approximately 0.4 seconds, check that the buzzer sounds for approximately 1 +/-0.3 seconds.

    2. Check that the buzzer does not sound as shown in the illustration below.

      A01J5YBE02

      Tech Tips


      • If the system detects an open in any sensor circuit, or any sensor does not work (unable to detect because the sensor is wet or frozen), the buzzer operates as shown in the illustration above.

      • If the buzzer sounds due to a sensor or circuit malfunction, turning the ignition switch off and then ON will return the system to normal if the malfunction is no longer present.