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Operation Check

  1. CHECK INITIAL CHECK FUNCTION 
    1. Turn the engine switch on (IG).
    2. After 2 seconds or more have passed, turn the clearance sonar main switch on. Then check the buzzer sounding condition.

      Buzzer sounding: 

      1 +/-0.3 seconds 

      HINT:

      • If a malfunction is detected in the ultrasonic sensor circuits, the location of the malfunctioning sensor blinks on the displayed vehicle graphic. However, after the sensor returns to normal, the display also returns to normal.
      • When the engine switch is turned on (IG) while the clearance sonar main switch is on, the buzzer will not sound.
        Fig 1: Warning Buzzer Blinking Pattern
        G05639193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. MALFUNCTION OF MULTI-INFORMATION DISPLAY 
    1. Ultrasonic sensor open circuit
      1. If there is an open circuit between the ultrasonic sensor and the ECU or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.
        Fig 2: Malfunction Of Multi-Information Display - Ultrasonic Sensor Open Circuit
        G05639194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • The example shows an open circuit in the No. 1 ultrasonic sensor (front left sensor).
        • If a sensor has an open circuit, "Check Sonar" is displayed. Refer to "open circuit in front sensor is displayed as a result or self-check" in the problem symptoms table to inspect it.
    2. Ultrasonic sensor frozen
      1. If a sensor is covered with foreign matter, such as mud or snow, the affected sensor is displayed as shown in the illustration.
        Fig 3: Malfunction Of Multi-Information Display - Ultrasonic Sensor Frozen
        G05639195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • The example shows that the No. 1 ultrasonic sensor (front left sensor) is covered with foreign matter.
        • If "Clean Sonar" is displayed, cleaning the foreign matter from the sensor will return the sensor to normal.
  3. MALFUNCTION OF MULTI-DISPLAY 
    1. Ultrasonic sensor open circuit
      1. If there is an open circuit between the ultrasonic sensor and the ECU or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.
        Fig 4: Malfunction Of Multi-Display - Ultrasonic Sensor Open Circuit
        G05639196Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • This example shows an open circuit in the No. 2 ultrasonic sensor (rear right sensor).
        • If a sensor has an open circuit, refer to "open circuit in rear sensor is displayed as a result of self-check" in the problem symptoms table to inspect it.
    2. Ultrasonic sensor frozen
      1. If a sensor is covered with foreign matter, such as mud or snow, the affected sensor is displayed as shown in the illustration.
        Fig 5: Malfunction Of Multi-Display - Ultrasonic Sensor Frozen
        G05639197Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • The example shows that the No. 1 ultrasonic sensor (front left sensor) is covered with foreign matter.
        • If "Clean sonar" is displayed, cleaning the foreign matter from the sensor will return the sensor to normal.
  4. DETECTION RANGE MEASUREMENT AND DISPLAY CHECK 
    NOTE: Apply the parking brake securely so that the vehicle does not move.
    1. Turn the engine switch on (IG).
    2. Turn the clearance sonar main switch on.
    3. Move the shift lever to R to check the No. 1 ultrasonic sensors, No. 2 ultrasonic sensors and No. 3 ultrasonic sensors.
    4. Move the shift lever to D and N to check the No. 1 ultrasonic sensors.
    5. Move the 60 mm (2.36 in.) pole around the sensor to measure the detection range of the sensor.
      NOTE:
      • These detection ranges are applicable when positioning the 60 mm (2.36 in.) pole parallel or perpendicular to the ground.
      • The ranges vary depending on the measuring method and type of obstacle (such as walls).
      • For close-range and medium-range detection, the values shown are for when using a pole with a diameter of 60 mm (2.36 in.). For long-range detection, the values shown are for when using walls.
      • The detection range of the resin bumper and steel bumper are not the same, as their installation positions are slightly different.
      1. No. 1 ultrasonic sensors detection range
        Fig 6: No. 1 Ultrasonic Sensors Detection Range Measurement
        G05639198Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. No. 2 ultrasonic sensor detection range
        Fig 7: No. 2 Ultrasonic Sensors Detection Range Measurement
        G05639199Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. No. 3 ultrasonic sensor detection range
        Fig 8: No. 3 Ultrasonic Sensors Detection Range Measurement
        G05639200Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. When the ultrasonic sensors have detected an obstacle, check the multi-display, multi-information display and that the No. 1 clearance warning buzzer sounds with the clearance sonar main switch on.

      Operation Condition 

      OPERATION CONDITION CHART

      Shift Lever Position Vehicle Speed Multi-display Detection, Multi-information Display Detection, Buzzer Detection
      No. 1 Ultrasonic Sensor No. 2 Ultrasonic Sensor No. 3 Ultrasonic Sensor
      P - Only perform check operation
      D, S, (N) 9 km/h (5.6 mph) or less ◦ X X
      R No limit ◦ ◦ ◦
      1. Check that the buzzer sounds with the clearance sonar main switch on as shown in the illustration.
        Fig 9: Identifying Buzzer Sounds With Clearance Sonar Main Switch
        G05639201Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        No. 1 Ultrasonic Sensor Detection Range 

        NO. 1 ULTRASONIC SENSOR DETECTION RANGE REFERENCE

        Detection Distance
        1. Close-range detection Within 350 +/-40 mm (13.8 +/-1.57 in.)
        2. Medium-range detection 350 +/-40 to 475 +/-50 mm (13.8 +/-1.57 to 18.7 +/-1.96 in.)
        3. Long-range detection 475 +/-50 to 600 +/-60 mm (18.7 +/-1.96 to 23.6 +/- 2.36 in.)

        No. 2 Ultrasonic Sensor Detection Range 

        NO. 2 ULTRASONIC SENSOR DETECTION RANGE REFERENCE

        Detection Distance
        1. Close-range detection Within 300 +/-30 mm (11.8 +/-1.18 in.)
        2. Medium-range detection 300 +/-30 to 375 +/-40 mm (11.8 +/-1.18 to 14.8 +/-1.57 in.)
        3. Long-range detection 375 +/-40 to 600 +/-60 mm (14.8 +/-1.57 to 23.6 +/-2.36 in.)

        No. 3 Ultrasonic Sensor Detection Range 

        NO. 2 ULTRASONIC SENSOR DETECTION RANGE REFERENCE

        Detection Distance
        1. Close-range detection Within 350 +/-40 mm (13.8 +/-1.57 in.)
        2. Medium-range detection 350 +/-40 to 450 +/-50 mm (13.8 +/-1.57 to 17.7 +/-1.96 in.)
        3. Long-range detection 450 +/-50 to 600 +/-60 mm (17.7 +/-1.96 to 23.6 +/-2.36 in.)
        4. Maximum long-range detection 600 +/-60 to 1500 +/-150 mm (23.6 +/-2.36 to 59.1 +/-5.91 in.)

        HINT:

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

      2. Check the multi-information display and buzzer when the No. 1 ultrasonic sensors have detected an obstacle.

        Operation Condition 

        OPERATION CONDITION CHART

        Engine Switch Clearance Sonar Main Switch Shift Lever Position Vehicle Speed
        on (IG) On D, N 9 km/h (5.6 mph) or less
        Fig 10: Identifying Multi-Information Display
        G05639202Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Multi-information Display 

        MULTI-INFORMATION DISPLAY REFERENCE

        Detection Range Buzzer Number of Bars Displayed
        1. Close-range detection Sounds continuously 1 (blinking)
        2. Medium-range detection Sounds intermittently (ON: 75 msec./OFF: 75 msec.) 2 (illuminated)
        3. Long-range detection Sounds intermittently (ON: 150 msec./OFF: 150 msec.) 3 (illuminated)
        Fig 11: Identifying Multi-Display
        G05639203Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Multi-display 

        MULTI-DISPLAY REFERENCE

        Detection Range Buzzer Number of Bars Displayed
        1. Close-range detection Sounds continuously 1 (red illumination)
        2. Medium-range detection Sounds intermittently (ON: 75 msec./OFF: 75 msec.) 2 (yellow illumination)
        3. Long-range detection Sounds intermittently (ON: 150 msec./OFF: 150 msec.) 3 (yellow illumination)

        HINT:

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

      3. Check the multi-information display and buzzer when the No. 2 ultrasonic sensors and No. 3 ultrasonic sensors have detected an obstacle.

        Operation Condition 

        OPERATION CONDITION CHART

        Engine Switch Clearance Sonar Main Switch Shift Lever Position
        on (IG) On R
        Fig 12: Identifying Multi-Information Display
        G05639204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Multi-information Display 

        MULTI-INFORMATION DISPLAY REFERENCE

        Detection Range Buzzer Number of Bars Displayed
        1. Close-range detection Sounds continuously 1 (blinking)
        2. Medium-range detection Sounds intermittently (ON: 75 msec./OFF: 75 msec.) 2 (illuminated)
        3. Long-range detection Sounds intermittently (ON: 150 msec./OFF: 150 msec.) 3 (illuminated)
        4. Maximum long-range detection (for rear center sensors) Sounds intermittently (ON: 150 msec./OFF: 650 msec.) 4 (illuminated)
        Fig 13: Identifying Multi-Display With W/Rear View Monitor System
        G05639205Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Multi-display 

        MULTI-DISPLAY REFERENCE

        Detection Range Buzzer Number of Bars Displayed
        1. Close-range detection Sounds continuously 1 (red illumination)
        *: Illumination (red)
        2. Medium-range detection Sounds intermittently (ON: 75 msec./OFF: 75 msec.) 2 (yellow illumination)
        *: Blinking (yellow)
        3. Long-range detection Sounds intermittently (ON: 150 msec./OFF: 150 msec.) 3 (yellow illumination)
        *: Blinking (yellow)
        4. Maximum long-range detection (for rear center sensors) Sounds intermittently (ON: 150 msec./OFF: 650 msec.) 4 (yellow illumination)
        *: Blinking (yellow)

        HINT:

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

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