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 front corner ultrasonic sensor, rear corner ultrasonic sensor or rear center ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.

        B006MASE03

        Tech Tips


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

          Click here

        • Buzzer sounding stops at 5 cycles.

    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.

        B006PJTE03

        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

        • Buzzer sounding stops at 5 cycles.

  2. MALFUNCTION DISPLAY (MULTI-DISPLAY)


    1. Open circuit indication


      1. If there is an open circuit between a front corner ultrasonic sensor, rear corner ultrasonic sensor or rear center ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.

        B006MBMC01
        *A w/ Panoramic View Monitor System - -
        *a When full screen displays *b When parking assist monitor system operates
        *c When panoramic view monitor system operates - -

        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.

        B006PYXC01
        *A w/ Panoramic View Monitor System - -
        *a When full screen displays *b When parking assist monitor system operates
        *c When panoramic view monitor system operates - -

        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 engine switch on (IG).

    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 (2.4 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 (2.4 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.

        Figure 1. Corner Sonar Detection Range

        B006QAXC02
        *a Approximately 800 mm (31.5 in.) *b Approximately 800 mm (31.5 in.)
        *c Approximately 200 mm (7.9 in.) *d Approximately 600 mm (23.6 in.)
        *e Approximately 450 mm (17.7 in.) *f Approximately 450 mm (17.7 in.)
        *g Approximately 320 mm to 400 mm (12.6 in. to 15.7 in.) *h Approximately 320 mm (12.6 in.)

        Note

        The 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.

        Figure 2. Rear Center Sonar Detection Range

        B006NQ8C02
        *a Approximately 1500 mm (59.1 in.) *b Approximately 1000 mm (39.4 in.)
        *c Approximately 200 mm (7.9 in.) *d Approximately 1500 mm (59.1 in.)
        *e Approximately 500 mm (19.7 in.) *f Approximately 250 mm (9.84 in.)
        *g Wall - -

    4. Front corner sonar display and buzzer operation check


      1. When the front corner ultrasonic sensor have detected an obstacle, check the displays and check that the buzzer sounds.

        Operation Condition
        Engine Switch Back Sonar or Clearance Sonar Switch Assembly Shift Lever Position Vehicle Speed
        On (IG) On In any position other than P Less than approximately 10 km/h (6 mph) if speed is decreasing
        B006O4TC02
        *A w/ Panoramic View Monitor System - -
        *a Multi-information Display *b Multi-display
        *c Example (Front Corner Sonar) *d Close-range Detection
        *e Medium-range Detection *f Long-range Detection
        *g When full screen displays *h When parking assist monitor system operates
        *i When panoramic view monitor system operates - -
        B006QD7E05
        B006QD7E07

        • *1: When the shift lever is not in P

        • *2: When the shift lever is in R

        Tech Tips


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

        • The display range of the panoramic view monitor system in the multi-display does not change.

      2. Rear corner sonar display and buzzer operation check


        1. When the rear corner ultrasonic sensor have detected an obstacle, check the display and check that the buzzer sounds.

        3. Operation Condition
        Engine Switch Back Sonar or Clearance Sonar Switch Assembly Shift Lever Position Vehicle Speed
        On (IG) On R -
        B006LV3C02
        *A w/ Panoramic View Monitor System - -
        *a Multi-information Display *b Multi-display
        *c Example (Rear Corner Sonar) *d Close-range Detection
        *e Medium-range Detection *f Long-range Detection
        *g When parking assist monitor system operates *h When panoramic view monitor system operates
        B006QZWE07
        B006QD7E07

        Tech Tips


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

        • The display range of the panoramic view monitor system in the multi-display does not change.

      3. Rear center sonar display and buzzer operation check


        1. When the rear center ultrasonic sensor have detected an obstacle, check the display and check that the buzzer sounds.

        4. Operation Condition
        Engine Switch Back Sonar or Clearance Sonar Switch Assembly Shift Lever Position Vehicle Speed
        On (IG) On R -
      B006OWBC02
      *A w/ Panoramic View Monitor System - -
      *a Multi-information Display *b Multi-display
      *c Example (Rear Center Sonar) *d Close-range Detection
      *e Medium-range Detection *f Long-range Detection
      *g Longest-range Detection *h When parking assist monitor system operates
      *i When panoramic view monitor system operates - -
      B006PX4E05
      B006PX4E06

      Tech Tips


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

      • The display range of the panoramic view monitor system in the multi-display does not change.