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HOMESERVICE MANUALSTOYOTA2009SEQUOIA LIMITED, 5.7 Y, RWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTWARNING SYSTEMSPARK ASSIST / MONITORINGINTUITIVE PARKING ASSIST SYSTEMOPERATION CHECK
2009 Toyota Sequoia Limited, 5.7 Y, RWD

Operation Check

2009 Toyota Sequoia Limited, 5.7 Y, RWDSECTION Operation Check
  1. CHECK INITIAL CHECK FUNCTION 
    1. Check the initial check function for the LED and buzzer.
      1. When the clearance sonar main switch is turned ON, check that the following occurs: 1) after 0.4 seconds, the buzzer sounds for approximately 0.7 to 1.3 seconds, and 2) the system starts the obstacle detection operation.
    2. Check the initial check function for the sensor.
      • Approximately 0.4 seconds after the ignition switch has been turned to ON and the clearance sonar main switch has been turned ON, all sensors will be checked by the system.
        Fig 1: LED And Buzzer Initial Check Function Chart
        G05161243Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • After 0.7 to 1.3 seconds have elapsed, the check operation for all of the sensors will stop when a vehicle speed of over 10 km/h (6 mph) is detected.
      • When the vehicle has been shifted from P, the system will change to obstacle detection operation according to the shift lever position.
      • If there are no changes in the conditions, such as those listed above (speed or shift lever position), the sensor check operation will be halted after 5 +/-1 second have elapsed. If one or more sensors are anomalous, check operation for all of the sensors will continue (sensors will continue transmitting).
    3. If the sensor is found to have an anomaly due to an open circuit or freezing for approximately 5 seconds or more, indications as shown in the following illustration appear.
      1. When the ECU judges that the sensor needs to be repaired:
        Fig 2: Sensor Needs To Be Repaired Graph
        G05161244Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. When the ECU judges that the sensor needs to be cleaned:
        Fig 3: Sensor Needs To Be Cleaned Graph
        G05161245Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • When the sensor condition returns to normal, the system ends normal clearance sonar mode and returns to steering sensing mode.
        • If the clearance sonar main switch is ON and the ignition switch is turned ON, the buzzer does not sound.
  2. DETECTION RANGE MEASUREMENT AND INDICATOR CHECK 
    NOTE: Apply the parking brake securely so that the vehicle does not move.
    1. Turn the ignition switch to ON.
    2. Move the shift lever to R to check the front corner sensors, rear corner sensors and back sensors.
    3. Move the shift lever to D, S or N to check the front corner sensors.
    4. Turn the clearance sonar main switch ON.
    5. Move a pole around the sensor to measure the detection range of the sensor.
      NOTE:
      • These detection ranges are applicable when positioning the 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 a pole with a diameter of 400 mm (15.7 in.).
      • The detection range of the resin bumper and steel bumper are not the same, as their installation positions are slightly different.
      1. Front corner sensors detection range
        Fig 4: Identifying Front Corner Sensors Detection Range
        G05652724Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        *1: The No.1 ultrasonic sensor side view detection ranges hatched area represents the cross section of the top view detection range A lines. The hatched area does not represent the entire side view detection range.

      2. Rear corner sensors detection range
        Fig 5: Identifying Rear Corner Sensors Detection Range
        G05652725Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Back sensors detection range
        Fig 6: Identifying Back Sensors Detection Range
        G05652726Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        *1: The No.1 ultrasonic sensor side view detection ranges hatched area represents the cross section of the top view detection range A lines. The hatched area does not represent the entire side view detection range.

    6. When the ultrasonic sensors have detected an obstacle, check the accessory meter and buzzer sounds with the clearance sonar main switch ON.

      Operation Condition 

      OPERATION CONDITION

      Shift Lever Position Vehicle Speed Buzzer Detection, Accessory Meter Detection
      Front Corner LH Back LH Rear Corner LH
      Front Corner RH Back RH Rear Corner RH
      P - X X X
      D, S, (N) 10 km/h (6.2 mph) or less ◦ X X
      R No Limit ◦ ◦ ◦
      1. Check the buzzer sounds with the clearance sonar main switch ON.
        Fig 7: Buzzer Sounds Chart
        G05161249Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Front Corner Detection Range 

        FRONT CORNER DETECTION RANGE

        Detection Distance
        1. Close-range detection Within 250 +/- 30 mm (9.84 +/-1.18 in.)
        2. Medium-range detection 250 +/- 30 to 400 +/- 40 mm (9.84 +/-1.18 to 15.7 +/- 1.57 in.)
        3. Long-range detection 400 +/- 40 to 600 +/- 60 mm (15.7 +/- 1.57 to 23.6 +/- 2.36 in.)

        Rear Corner Detection Range 

        REAR CORNER DETECTION RANGE

        Detection Distance
        1. Close-range detection Within 400 +/- 40 mm (15.7 +/-1.57 in.)
        2. Medium-range detection 400 +/- 40 to 520 +/- 60 mm (15.7 +/-1.57 to 20.5 +/- 2.36 in.)
        3. Long-range detection 520 +/- 60 to 850 +/- 90 mm (20.5 +/- 2.36 to 33.5 +/- 3.54 in.)

        Back Detection Range 

        BACK DETECTION RANGE

        Detection Distance
        1. Close-range detection Within 850 +/- 90 mm (33.5 +/- 3.54 in.)
        2. Medium-range detection 850 +/- 90 to 1150 +/-120 mm (33.5 +/- 3.54 to 45.3 +/- 4.7 in.)
        3. Long-range detection 1150 +/-120 to 1800 +/-180 mm (45.3 +/- 4.7 to 70.9 +/- 7.09 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 indicator and buzzer on the accessory meter when the front corner sensors have detected an obstacle.

        Operation Condition 

        OPERATION CONDITION

        Ignition Switch Clearance Sonar Main Switch Shift Lever Position Vehicle Speed
        ON ON D, S, N 10 km/h (6.2 mph) or less
        Fig 8: Identifying Indicator And Buzzer On Accessory Meter When Front Corner Sensors Have Detected An Obstacle
        G05161250Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Accessory Meter 

        ACCESSORY METER

        Detection Range Buzzer Indicator Displayed
        1. Close-range detection Sounds continuously Corner indicator(s) are illuminated
        2. Medium-range detection Sounds intermittently (ON: 75 msec. / OFF: 75 msec.) Corner indicator(s) are blinking
        3. Long-range detection Sounds intermittently (ON: 150 msec. / OFF: 150 msec.) Corner indicator(s) are blinking

        HINT:

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

      3. Check the accessory meter and buzzer when the front corner sensors, back sensors and rear corner sensors have detected an obstacle.

        Operation Condition 

        OPERATION CONDITION

        Ignition Switch Clearance Sonar Main Switch Shift Lever Position
        ON ON R position
        Fig 9: Identifying Check Accessory Meter And Buzzer When Front Corner Sensors, Back Sensors And Rear Corner Sensors Have Detected An Obstacle
        G05161251Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Accessory Meter 

        ACCESSORY METER

        Detection Range Buzzer Indicator Displayed
        1. Close-range detection Sounds continuously Corner indicator(s) are illuminated and/or back indicator is illuminated
        2. Medium-range detection Sounds intermittently (ON: 75 msec. / OFF: 75 msec.) Corner indicator(s) are blinking and/or back indicator is blinking
        3. Long-range detection Sounds intermittently (ON: 150 msec. / OFF: 150 msec.) Corner indicator(s) are blinking and/or back indicator is blinking

        HINT:

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

RENDER: 1.0x

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