Toyota Parking Assist-Sensor System -- Operation Check |
INITIAL CHECK |
Engine switch on (IG) (back or clearance sonar switch assembly off).
Back or clearance sonar switch assembly on and check an indication state of the vehicle mark.
- OK:
- The initial check is performed for approximately 5 seconds after the system turns on, and then the system switches to detection operation mode.
- HINT:
- During the initial check, only malfunction detection is performed. Obstacle detection is not performed.
- When the engine switch is turned on (IG) with the back or clearance sonar switch assembly on, malfunction detection is performed, but the buzzer does not sound.
- A frozen indication is displayed if the ultrasonic sensor is frozen.
- If an open circuit occurs in an ultrasonic sensor circuit or a malfunction is detected in a sensor (ultrasonic sensor), an open circuit indication is displayed.
MALFUNCTION DISPLAY (MULTI-INFORMATION DISPLAY) |
Frozen indication
If a sensor is covered with foreign matter, such as mud or snow, the affected sensor is displayed as shown in the illustration.
- HINT:
- If a frozen indication is displayed, proceed to "Sensor Frozen Indication (Dirty or Frozen)" (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. Also, the blinking of indicator (A) stops after the system returns to normal.
Open circuit indication
If there is an open circuit between the No. 1 ultrasonic sensor, No. 2 ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.
- HINT:
- 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. Also, the blinking of indicator (A) stops after the system returns to normal.
MALFUNCTION DISPLAY (MULTI-DISPLAY) |
Frozen indication
If a sensor is covered with foreign matter, such as mud or snow, the affected sensor is displayed as shown in the illustration.
Text in Illustration *a When multi-terrain monitor system operates *b When parking assist monitor system or rear view monitor system operates *c When full screen displays - - - HINT:
- If a frozen indication is displayed, proceed to "Sensor Frozen Indication (Dirty or Frozen)" (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).
Open circuit indication
If there is an open circuit between the 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.
Text in Illustration *a When multi-terrain monitor system operates *b When parking assist monitor system or rear view monitor system operates *c When full screen displays - - - HINT:
- If a sensor has an open circuit, check for DTCs and troubleshoot according to each inspection procedure (Click here).
DETECTION RANGE MEASUREMENT AND DISPLAY CHECK |
- NOTICE:
- 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.
- The sensor operation conditions indicate the default settings with no customization performed.
Turn the engine switch on (IG).
Turn the back sonar or clearance sonar switch assembly on.
- HINT:
- Using the initial check function, check for malfunctions in the TOYOTA parking assist-sensor system, and then measure the detection range and perform a display check.
Detection range measurement:
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 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.
- NOTICE:
- 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).
- HINT:
- Have an assistant move the pole.
- Corner sensors detection range
- NOTICE:
- The corner sensors 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.
- Rear center sensors detection range
- NOTICE:
- The corner sensors 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.
Front corner sensor display and buzzer operation check
When the No. 1 ultrasonic sensors (front corner sensor) have detected an obstacle, check the displays and check that the buzzer sounds.
Operation Condition Engine Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed On (IG) On In any position other than P or R - Less than approximately 15 km/h (9.3 mph) if speed is increasing
- Less than approximately 10 km/h (6.2 mph) if speed is decreasing
On (IG) On R - - Standard:
Multi-information Display and Buzzer Detection Range During Judgment Obstacle *1
Close-range detection
Within approximately 350 +/- 40 mm (13.8 +/- 1.57 in.)Buzzer: Sounds continuously
Number of bars displayed: 1 (blinking)60 mm (2.4 in.) diameter pole *2
Medium-range detection
From approximately 350 +/- 40 to 450 +/- 45 mm (13.8 +/- 1.57 to 17.7 +/- 1.77 in.)Buzzer: Sounds intermittently (ON: 0.1 seconds / OFF: 0.1 seconds)
Number of bars displayed: 2 (illuminated)60 mm (2.4 in.) diameter pole *3
Long-range detection
From approximately 450 +/- 45 to 600 +/- 60 mm (17.7 +/- 1.77 to 23.6 +/- 2.36 in.)Buzzer: Sounds intermittently (ON: 0.2 seconds / OFF: 0.2 seconds)
Number of bars displayed: 3 (illuminated)60 mm (2.4 in.) diameter pole Multi-display Assembly and Buzzer Detection Range During Judgment Obstacle *1
Close-range detection
Within approximately 350 +/- 40 mm (13.8 +/- 1.57 in.)Buzzer: Sounds continuously
*4: Red (illuminated)
*5: Number of bars displayed: 1 (illuminated)60 mm (2.4 in.) diameter pole *2
Medium-range detection
From approximately 350 +/- 40 to 450 +/- 45 mm (13.8 +/- 1.57 to 17.7 +/- 1.77 in.)Buzzer: Sounds intermittently (ON: 0.1 seconds / OFF: 0.1 seconds)
*4: Yellow (blinking)
*5: Number of bars displayed: 2 (illuminated)60 mm (2.4 in.) diameter pole *3
Long-range detection
From approximately 450 +/- 45 to 600 +/- 60 mm (17.7 +/- 1.77 to 23.6 +/- 2.36 in.)Buzzer: Sounds intermittently (ON: 0.2 seconds/ OFF: 0.2 seconds)
*4: Yellow (blinking)
*5: Number of bars displayed: 3 (illuminated)60 mm (2.4 in.) diameter pole
- *5: When the shift lever is not in P or R
- HINT:
- Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.
- Less than approximately 15 km/h (9.3 mph) if speed is increasing
Rear corner sensor display and buzzer operation check
When the No. 2 ultrasonic sensors (rear corner sensor) have detected an obstacle, check the display and check that the buzzer sounds.
Operation Condition Engine Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed On (IG) On R - - Standard:
Multi-information Display and Buzzer Detection Range During Judgment Obstacle *1
Close-range detection
Within approximately 350 +/- 40 mm (13.8 +/- 1.57 in.)Buzzer: Sounds continuously
Number of bars displayed: 1 (blinking)60 mm (2.4 in.) diameter pole *2
Medium-range detection
From approximately 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)Buzzer: Sounds intermittently (ON: 0.1 seconds / OFF: 0.1 seconds)
Number of bars displayed: 2 (illuminated)60 mm (2.4 in.) diameter pole *3
Long-range detection
From approximately 450 +/- 50 to 600 +/- 60 mm (17.7 +/- 1.97 to 23.6 +/- 2.36 in.)Buzzer: Sounds intermittently (ON: 0.2 seconds / OFF: 0.2 seconds)
Number of bars displayed: 3 (illuminated)60 mm (2.4 in.) diameter pole Multi-display Assembly and Buzzer Detection Range During Judgment Obstacle *1
Close-range detection
Within approximately 350 +/- 40 mm (13.8 +/- 1.57 in.)Buzzer: Sounds continuously
*4: Red (illuminated)60 mm (2.4 in.) diameter pole *2
Medium-range detection
From approximately 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)Buzzer: Sounds intermittently (ON: 0.1 seconds / OFF: 0.1 seconds)
*4: Yellow (blinking)60 mm (2.4 in.) diameter pole *3
Long-range detection
From approximately 450 +/- 50 to 600 +/- 60 mm (17.7 +/- 1.97 to 23.6 +/- 2.36 in.)Buzzer: Sounds intermittently (ON: 0.2 seconds / OFF: 0.2 seconds)
*4: Yellow (blinking)60 mm (2.4 in.) diameter pole
- HINT:
- Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.
Rear center sensor display and buzzer operation check
When the No. 2 ultrasonic sensors (rear center sensor) have detected an obstacle, check the display and check that the buzzer sounds.
Operation Condition Engine Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed On (IG) On R - - Standard:
Multi-information Display and Buzzer Detection Range During Detection Obstacle *1
Close-range detection
Within approximately 500 +/- 50 mm (19.7 +/- 1.97 in.)Buzzer: Sounds continuously
Number of bars displayed: 1 (blinking)60 mm (2.4 in.) diameter pole *2
Medium-range detection
From approximately 500 +/- 50 to 650 +/- 70 mm (19.7 +/- 1.97 to 25.6 +/- 2.76 in.)Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)
Number of bars displayed: 2 (illuminated)60 mm (2.4 in.) diameter pole *3
Long-range detection
From approximately 650 +/- 70 to 800 +/- 80 mm (25.6 +/- 2.76 to 31.5 +/- 3.15in.)Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)
Number of bars displayed: 3 (illuminated)60 mm (2.4 in.) diameter pole *4
Longest-range detection
From approximately 800 +/- 80 to 1500 +/- 150 mm (31.5 +/- 3.15 to 59.1 +/- 5.91 in.)Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.8 sec.)
Number of bars displayed: 4 (illuminated)Wall Multi-display Assembly and Buzzer Detection Range During Detection Obstacle *1
Close-range detection
Within approximately 500 +/- 50 mm (19.7 +/- 1.97 in.)Buzzer: Sounds continuously
*5: Red (illuminated)60 mm (2.4 in.) diameter pole *2
Medium-range detection
From approximately 500 +/- 50 to 650 +/- 70 mm (19.7 +/- 1.97 to 25.6 +/- 2.76 in.)Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)
*5: Yellow (blinking)60 mm (2.4 in.) diameter pole *3
Long-range detection
From approximately 650 +/- 70 to 800 +/- 80 mm (25.6 +/- 2.76 to 31.5 +/- 3.15in.)Buzzer: Sounds intermittently (ON: 0.2 sec./ OFF: 0.2 sec.)
*5: Yellow (blinking)60 mm (2.4 in.) diameter pole *4
Longest-range detection
From approximately 800 +/- 80 to 1500 +/- 150 mm (31.5 +/- 3.15 to 59.1 +/- 5.91 in.)Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.8 sec.)
*5: Yellow (blinking)Wall
- HINT:
- Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.