Operation Check

1. Turn the engine switch on (IG).
2. When the clearance sonar system is turned ON, check that the following occurs: 1) after 0.1 milliseconds, the buzzer sounds for approximately 0.8 seconds, and 2) the system starts the obstacle detection operation.
   Fig 1: Inspecting Self-Check Function

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   • If a sensor has an open circuit or a sensor's detection operation malfunctions because it is wet or frozen, a malfunction display is shown in the multi-information display or multi-display, and the buzzer sounds.
   • When the sensor condition returns to normal, the system ends normal clearance sonar mode.
   • If the clearance sonar main switch is ON and the engine switch is turned on (IG), the buzzer does not sound.

1. Ultrasonic sensor open circuit
   1. If there is an open circuit between the ultrasonic sensor and the clearance warning ECU or a sensor is malfunctioning, the malfunction is displayed.
      Fig 2: Identifying Multi-Information Display (Ultrasonic Sensor Open Circuit)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • The example shows an open circuit in the ultrasonic sensor (front left sensor).
      • If a sensor has an open circuit, refer to "open circuit is displayed during self-check function" on 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.
      Fig 3: Identifying Multi-Information Display (Ultrasonic Sensor Frozen)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • The example shows that the 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.

1. Ultrasonic sensor open circuit
   1. If there is an open circuit between the ultrasonic sensor and the clearance warning ECU or a sensor is malfunctioning, the malfunction is displayed.
      Fig 4: Identifying Multi-Display (Ultrasonic Sensor Open Circuit)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • This example shows an open circuit in the ultrasonic sensor (rear right sensor).
      • If a sensor has an open circuit, refer to "open circuit is displayed during self-check function" on 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.
      Fig 5: Identifying Multi-Display (Ultrasonic Sensor Frozen)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • The example shows that the 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.

1. Detection range measurement
   NOTE: Make sure the vehicle does not move by applying the parking brake firmly.
   1. Turn the engine switch on (IG).
   2. Release the parking brake lever (M/T).
   3. Move the shift lever to reverse position to check the ultrasonic sensors (rear sensors).
2. Turn the clearance sonar main switch ON.
3. Move a diameter 60 mm (2.36 in.) pole near each sensor to measure its detection range.
   Fig 6: Measuring Detection Range (Clearance Sonar)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 7: Measuring Detection Range (Back Sonar)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE:

   • These detection ranges are applicable when positioning the diameter 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).
   • The No. 1 ultrasonic sensor side view detection range's hatched area (labeled *1) represents the cross section of the top view detection range's A lines. The hatched area (*1) does not represent the entire side view detection range.
4. When the ultrasonic sensors (front clearance sonar) have detected an obstacle, check the displays and buzzer sounds.

   Operation condition (for A/T models): 

   OPERATION CONDITION (FOR A/T MODELS)
   
   

   Engine Switch	Clearance Sonar Main Switch	Shift Lever Position	Vehicle Speed
   ON (IG)	ON	In any position except P	6 mph (10 km/h) or less

   Operation condition (for M/T models): 

   OPERATION CONDITION (FOR M/T MODELS)
   
   

   Engine Switch	Clearance Sonar Main Switch	Parking Brake Lever	Vehicle Speed
   ON (IG)	ON	Release	6 mph (10 km/h) or less

   Fig 8: Checking Displays And Buzzer Sounds (When Ultrasonic Sensors (Front Clearance Sonar) Detected) (1 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 9: Checking Displays And Buzzer Sounds (When Ultrasonic Sensors (Front Clearance Sonar) Detected) (2 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard 

   Multi-information display (A/T models: shift lever position not in P, M/T models: Release the parking brake) 

   MULTI-INFORMATION DISPLAY (A/T MODELS: SHIFT LEVER POSITION NOT IN P, M/T MODELS: RELEASE THE PARKING BRAKE)
   
   

   Detection Range	During Judgment
   *1 Close-range detection Within approx. 250 +- 50 mm (9.84 +-1.97 in.)	Buzzer: Sounds continuously Number of bars displayed: 1 (Blinking) No steering guide mark
   *2 Medium-range detection From approx. 250 +- 50 to 375 +- 50 mm (9.84 +-1.97 to 14.76 +-1.97 in.)	Buzzer: Sounds intermittently (ON: 75 ms / OFF: 75 ms) Number of bars displayed: 2 (illuminated) No steering guide mark
   *3 Long-range detection From approx. 375 +- 50 to 500 +- 50 mm (14.76 +-1.97 to 19.69 +-1.97 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 150 ms) Number of bars displayed: 3 (illuminated) No steering guide mark

   Multi-display (A/T models: shift lever position not in P, M/T models: Release the parking brake) 

   MULTI-DISPLAY (A/T MODELS: SHIFT LEVER POSITION NOT IN P, M/T MODELS: RELEASE THE PARKING BRAKE)
   
   

   Detection Range	During Collision Judgment
   *1 Close-range detection Within approx. 250 +- 50 mm (9.84 +-1.97 in.)	Buzzer: Sounds continuously Number of bars displayed: 1 (red illumination) No steering guide mark
   *2 Medium-range detection From approx. 250 +- 50 to 375 +- 50 mm (9.84 +- 1.97 to 14.76 +- 1.97 in.)	Buzzer: Sounds intermittently (ON: 75 ms / OFF: 75 ms) Number of bars displayed: 2 (yellow illumination) No steering guide mark
   *3 Long-range detection From approx. 375 +- 50 to 500 +- 50 mm (14.76 +- 1.97 to 19.69 +- 1.97 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 150 ms) Number of bars displayed: 3 (yellow illumination) No steering guide mark

   With rear view monitor (shift lever position R) 

   WITH REAR VIEW MONITOR (SHIFT LEVER POSITION R)
   
   

   Detection Range	During Collision Judgment
   *1 Close-range detection Within approx. 250 +- 50 mm (9.84 +- 1.97 in.)	Buzzer: Sounds continuously *4: Illumination (red)
   *2 Medium-range detection From approx. 250 +- 50 to 375 +- 50 mm (9.84 +- 1.97 to 14.76 +- 1.97 in.)	Buzzer: Sounds intermittently (ON: 75 ms. / OFF: 75 ms) *4: Blinking (yellow)
   *3 Long-range detection From approx. 375 +- 50 to 500 +- 50 mm (14.76 +- 1.97 to 19.69 +- 1.97 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 150 ms) *4: Blinking (yellow)

   HINT:

   • Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.
5. When the ultrasonic sensors (back sonar) have detected an obstacle, check the display and buzzer sounds.

   Operation condition: 

   OPERATION CONDITION TABLE
   
   

   Engine Switch	Clearance Sonar Main Switch	Shift Lever Position	Vehicle Speed
   ON (IG)	ON	Reverse Position	6 mph (10 km/h) or less

   Fig 10: Checking Display And Buzzer Sounds (When Ultrasonic Sensor (Back Sonar) Detected) (1 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 11: Checking Display And Buzzer Sounds (When Ultrasonic Sensor (Back Sonar) Detected) (2 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard 

   Multi-information display (shift lever position R) 

   MULTI-INFORMATION DISPLAY (SHIFT LEVER POSITION R)
   
   

   Detection Range	During Detection
   *1 Close-range detection Within approx. 350 +- 50 mm (13.78 +- 1.97 in.)	Buzzer: Sounds continuously Number of bars displayed: 1 (blinking)
   *2 Medium-range detection From approx. 350 +- 50 to 450 +- 50 mm (13.78 +- 1.97 to 17.72 +- 1.97 in.)	Buzzer: Sounds intermittently (ON: 75 ms / OFF: 75 ms) Number of bars displayed: 2 (illuminated)
   *3 Long-range detection From approx. 450 +- 50 to 600 +- 60 mm (17.72 +- 1.97 to 23.62 +- 2.36 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 150 ms) Number of bars displayed: 3 (illuminated)
   *4 Maximum long-range detection From approx. 600 +- 60 to 1,500 +- 150 mm (23.62 +- 2.36 to 59.06 +- 5.91 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 650 ms) Number of bars displayed: 4 (illuminated)

   Multi-display (shift lever position R) 

   MULTI-DISPLAY (SHIFT LEVER POSITION R)
   
   

   Detection Range	During Collision Judgment
   *1 Close-range detection Within approx. 350 +- 50 mm (13.78 +- 1.97 in.)	Buzzer: Sounds continuously Number of bars displayed: 1 (red illumination)
   *2 Medium-range detection From approx. 350 +- 50 to 450 +- 50 mm (13.78 +- 1.97 to 17.72 +- 1.97 in.)	Buzzer: Sounds intermittently (ON: 75 ms / OFF: 75 ms) Number of bars displayed: 2 (yellow illumination)
   *3 Long-range detection From approx. 450 +- 50 to 600 +- 60 mm (17.72 +- 1.97 to 23.62 +- 2.36 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 150 ms) Number of bars displayed: 3 (yellow illumination)
   *4 Maximum long-range detection From approx. 600 +- 60 to 1,500 +- 150 mm (23.62 +- 2.36 to 59.06 +- 5.91 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 650 ms) Number of bars displayed: 4 (yellow illumination)

   With rear view monitor (shift lever position R) 

   WITH REAR VIEW MONITOR (SHIFT LEVER POSITION R)
   
   

   Detection Range	During Collision Judgment
   *1 Close-range detection Within approx. 350 +- 5 mm (13.78 +- 1.97 in.)	Buzzer: Sounds continuously *5: Illumination (red)
   *2 Medium-range detection From approx. 350 +- 50 to 450 +- 50 mm (13.78 +- 1.97 to 17.72 +- 1.97 in.)	Buzzer: Sounds intermittently (ON: 75 ms / OFF: 75 ms) *5: Blinking (yellow)
   *3 Long-range detection From approx. 450 +- 50 to 600 +- 50 mm (17.72 +- 1.97 to 23.62 +- 1.97 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 150 ms) *5: Blinking (yellow)
   *4 Maximum long-range detection From approx. 600 +- 50 to 1,500 mm (23.62 +- 1.97 to 59.06 in.)	Buzzer: Sounds intermittently (ON: 150 ms / OFF: 650 ms) *5: Blinking (yellow)

   HINT:

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

6. When the ultrasonic sensors (rear clearance sonar) have detected an obstacle, check the display and buzzer sounds.

Operation condition: 

Fig 12: Checking Display And Buzzer Sounds (When Ultrasonic Sensors (Rear Clearance Sonar) Detected) (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 13: Checking Display And Buzzer Sounds (When Ultrasonic Sensors (Rear Clearance Sonar) Detected) (2 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard 

Multi-information display (shift lever position R) 

Multi-display (shift lever position R) 

With Rear view monitor (shift lever position R) 

HINT:

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