TOYOTA PARKING ASSIST-SENSOR SYSTEM(for 8 Sensor Type) 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, No. 2 ultrasonic sensor, No. 3 ultrasonic sensor or No. 4 ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.

        A01QPIOC01
        *a Multi-information Display *b Buzzer
        *c Approximately 7.5 seconds (5 cycles) *d Approximately 1.5 seconds (1 cycles)
        *e Approximately 0.25 seconds *f Approximately 0.75 seconds

        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.

        A01QRJGC01
        *a Multi-information Display *b Buzzer
        *c Approximately 7.5 seconds (5 cycles) *d Approximately 1.5 seconds (1 cycles)
        *e Approximately 0.25 seconds *f Approximately 0.75 seconds

        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 No. 1 ultrasonic sensor, No. 2 ultrasonic sensor, No. 3 ultrasonic sensor or No. 4 ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.

        A01QU42C01
        *A w/ Panoramic View Monitor System - -
        *a Example: *b When full screen displays
        *c When parking assist monitor system operates *d 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.

        A01QU6VC01
        *A w/ Panoramic View Monitor System - -
        *a Example: *b When full screen displays
        *c When parking assist monitor system operates *d 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 ignition switch to ON.

    2. Turn the TOYOTA parking assist-sensor system 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
        Front Center In any position other than P or R
        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 Sensor Detection Range

        A01QPDOC01
        *a Approximately 660 mm (26.0 in.) *b Approximately 615 mm (24.2 in.)
        *c Approximately 500 mm (19.7 in.) *d Approximately 550 mm (21.7 in.)
        *e Approximately 375 mm (14.8 in.) *f Approximately 335 mm (13.2 in.)
        *g Approximately 100 mm (3.94 in.) *h Approximately 100 mm (3.94 in.)

        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.

        Figure 2. Front Center Sensor Detection Range

        A01QQYUC01
        *a Approximately 1730 mm (68.1 in.) *b Approximately 1000 mm (39.4 in.)
        *c Approximately 20 mm (0.8 in.) *d Approximately 435 mm (17.1 in.)
        *e Approximately 100 mm (3.94 in.) - -

        Figure 3. Rear Center Sensor Detection Range

        A01QT7IC01
        *a Approximately 1540 mm (60.6 in.) *b Approximately 1000 mm (39.4 in.)
        *c Approximately 1500 mm (59.1 in.) *d Approximately 400 mm (15.8 in.)
        *e Approximately 100 mm (3.94 in.) *f Approximately 50 mm (1.97 in.)
        *g Wall - -

    4. Front corner sonar display and buzzer operation check


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

        Operation Condition
        Ignition Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed
        ON on In any position other than P

        • Less than approximately 10 km/h (6 mph) if speed is decreasing

        • Less than approximately15 km/h (9 mph) if speedis increasing
        ON on In any position R -

        Figure 4. The screen display when detected an obstacle (No. 1 ultrasonic sensor [front corner sensor])

        A01QQRTC01
        *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 operates
        *i When panoramic view monitor system operates - -

        Figure 5. The buzzer sound when detected an obstacle (No. 1 ultrasonic sensor [front corner sensor])

        A01QR31E21

        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. Front center sonar display and buzzer operation check


        1. When the No. 2 ultrasonic sensors (front ceneter sensor) have detected an obstacle, check the displays and check that the buzzer sounds.

        3. Operation Condition
        Ignition Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed
        ON on In any position other than P or R Less than approximately 10 km/h (6 mph) if speed is decreasing

        Figure 6. The screen display when detected an obstacle (No. 2 ultrasonic sensor [front center sensor])

        A01QR6XC01
        *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 Longest-range Detection *h When full screen displays
        *i When parking assist monitor operates *j When panoramic view monitor system operates

        Figure 7. The buzzer sound when detected an obstacle (No. 2 ultrasonic sensor [front center sensor])

        A01QRHVE04

        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 corner sonar display and buzzer operation check


        1. When the No. 3 ultrasonic sensors (rear corner sensor) have detected an obstacle, check the display and check that the buzzer sounds.

        4. Operation Condition
        Ignition Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed
        ON on R -

      Figure 8. The screen display when detected an obstacle (No. 3 ultrasonic sensor [rear corner sensor])

      A01QSQJC01
      *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 full screen displays *h When parking assist monitor operates
      *i When panoramic view monitor system operates - -

      Figure 9. The buzzer sound when detected an obstacle (No. 3 ultrasonic sensor [rear corner sensor])

      A01QR31E21

      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.

    5. Rear center sonar display and buzzer operation check


      1. When the No. 4 ultrasonic sensors (rear center sensor) have detected an obstacle, check the display and check that the buzzer sounds.

      6. Operation Condition
      Ignition Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed
      ON on R -

    Figure 10. The screen display when detected an obstacle (No.4 ultrasonic sensors [rear center sensor])

    A01QSEBC01
    *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 full screen displays
    *i When parking assist monitor operates *j When panoramic view monitor system operates

    Figure 11. The buzzer sound when detected an obstacle (No.4 ultrasonic sensors [rear center sensor])

    A01QRHVE04

    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.