TOYOTA PARKING ASSIST-SENSOR SYSTEM OPERATION CHECK


  1. MALFUNCTION DISPLAY (MULTI-INFORMATION DISPLAY)


    1. Open circuit indication


      1. If there is an open circuit between a No. 1 ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.

        B000LSTE01

        Tech Tips

        If a sensor has an open circuit, check for DTCs and troubleshoot according to each inspection procedure Click here.

    2. Frozen indication


      1. If a sensor is covered with foreign matter, such as mud or snow, the affected sensor is displayed as shown in the illustration.

        B000HC3E01

        Tech Tips


        • If a frozen indication is displayed, read Precaution for Toyota Parking Assist-sensor System first and confirm that the sensor is not covered with foreign matter Click here.

        • Check for DTCs and troubleshoot according to each inspection procedure after confirming that the sensor is not covered with foreign matter Click here.

  2. MALFUNCTION DISPLAY (MULTI-DISPLAY (w/ Parking Assist Monitor System))


    1. Open circuit indication


      1. If there is an open circuit between a No. 1 ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.

        B000I6NE01
        Text in Illustration
        *a When the shift lever is in R - -

        Tech Tips

        If a sensor has an open circuit, check for DTCs and troubleshoot according to each inspection procedure Click here.

    2. Frozen indication


      1. If a sensor is covered with foreign matter, such as mud or snow, the affected sensor is displayed as shown in the illustration.

        B000KHRE01
        Text in Illustration
        *a When the shift lever is in R - -

        Tech Tips


        • If a frozen indication is displayed, read Precaution for Toyota Parking Assist-sensor System first and confirm that the sensor is not covered with foreign matter Click here.

        • Check for DTCs and troubleshoot according to each inspection procedure after confirming that the sensor is not covered with foreign matter Click here.

  3. DETECTION RANGE MEASUREMENT AND DISPLAY INSPECTION

    Note

    The following measurement and inspection will be performed with the shift lever in a position other than P. Be sure to apply the parking lever and depress the brake pedal firmly to prevent the vehicle from moving.


    1. Turn the ignition switch to ON.

    2. Turn the clearance sonar main switch on.

    3. Detection range measurement:


      1. Move the shift lever according to the table below.

        Measurement Area Shift Lever Position
        Front Corner In any position other than P
        Rear Corner R
        Rear Center

      2. Move a 60 mm (2.36 in.) diameter pole near each sensor to measure its detection range. When measuring the longest-range detection of the front center sonar and the rear center sonar, use a wall or equivalent.

        Note

        These detection ranges are applicable when positioning the 60 mm (2.36 in.) diameter pole parallel or perpendicular to the ground. The detection range varies depending on the measuring method and type of obstacle (such as walls).

        Tech Tips

        Have an assistant move the pole.

        B000IXSE01

        Note

        The No. 1 ultrasonic sensor side view detection range (hatched area labeled (B)) represents the cross section of the top view detection range (A). The hatched area (B) does not represent the entire side view detection range.

        B000NPRE01

    4. Front corner sonar display and buzzer operation check


      1. When the No. 1 ultrasonic sensors (front corner sonar) have detected an obstacle, check the displays and check that the buzzer sounds.

        Operation Condition
        Ignition Switch Clearance Sonar Main Switch Shift Lever Position Vehicle Speed
        ON On In any position other than P or R

        • Less than approximately 13 km/h (8.1 mph) if speed is increasing

        • Less than approximately 9 km/h (5.6 mph) if speed is decreasing
        ON On R -
        B000KRRE01
        Text in Illustration
        *a Multi-information Display *b Multi-display (w/ Parking Assist Monitor System)
        *c Close-range Detection *d Medium-range Detection
        *e Long-range Detection *f When the shift lever is in R
        B000JR8E20

        Tech Tips

        Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

      2. Rear corner sonar display and buzzer operation check


        1. When the No. 1 ultrasonic sensors (rear corner sonar) have detected an obstacle, check the display and check that the buzzer sounds.

        3. Operation Condition
        Ignition Switch Clearance Sonar Main Switch Shift Lever Position Vehicle Speed
        ON On R -
        B000I1EE01
        Text in Illustration
        *a Multi-information Display *b Multi-display (w/ Parking Assist Monitor System)
        *c Close-range Detection *d Medium-range Detection
        *e Long-range Detection - -
        B000JR8E21

        Tech Tips

        Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

      3. Rear center sonar display and buzzer operation check


        1. When the No. 1 ultrasonic sensors (rear center sonar) have detected an obstacle, check the display and check that the buzzer sounds.

        4. Operation Condition
        Ignition Switch Clearance Sonar Main Switch Shift Lever Position Vehicle Speed
        ON On R -
      B000KXYE01
      Text in Illustration
      *a Multi-information Display *b Multi-display (w/ Parking Assist Monitor System)
      *c Close-range Detection *d Medium-range Detection
      *e Long-range Detection *f Longest-range Detection
      B000K91E05

      Tech Tips

      Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.