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Inspection Procedure

  1. CHECK PARKING POSITION 
    1. Check the parking function with the vehicle angle at 45° as shown in the illustration.

      HINT:

      Depending on the size of the equipped tires (for example, the tire size may affect the rotation of the tire in relation to the steering wheel) and the vehicle angle (for example, the vehicle angle is too small), the parking position may deviate or the vehicle may not be straight. As a result, this inspection is necessary.

      Fig 1: Identifying Parking Position Angle
      G05776495Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: Go to step 2 

    OK: SYSTEM IS NORMAL 

  2. CHECK TIRE 
    1. Check that the vehicle tires are the recommended size, and that the tire pressure is normal.

      OK: 

      Vehicle tires are recommended size, and tire pressure is normal. 

      NG:  Go to step  12

      OK: Go to Next Step 

  3. READ VALUE USING TECHSTREAM (WHEEL ODOMETER INFORMATION) 
    1. Select the item below in the Data List, and read its value displayed on the Techstream to check the wheel odometer information.

      Advanced Parking Guidance System 

      ADVANCED PARKING GUIDANCE SYSTEM DATA LIST

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Right Wheel Odometer Info Right Wheel Odometer Information/0 to 255 0 to 255 1 pulse = Approximately 2 cm (0.787 in.)
      Left Wheel Odometer Info Left Wheel Odometer Information/0 to 255 0 to 255 1 pulse = Approximately 2 cm (0.787 in.)

    Result 

    RESULT CHART

    Result Proceed to
    No malfunction A
    Right side's actual driving distance in different B
    Left side's actual driving distance in different C

    B: REPLACE REAR SPEED SENSOR RH  (See REMOVAL )

    C: REPLACE REAR SPEED SENSOR LH  (See REMOVAL )

    A: Go to Next Step 

  4. CHECK SYMPTOM 
    1. Parallel parking
      1. Move the vehicle to a level surface area with parking spaces.
      2. Using the advanced parking guidance system, perform parallel parking. Check how the vehicle deviates from the set parking position.

        HINT:

        Begin the check with the vehicle at a 45° angle to the parking space. Perform the check from the right and left side of the parking space.

      3. Select a case below that is most similar to the problem, and follow the instructions.
    2. Deviation examples
      1. Case 1
        Fig 2: Deviation Example - Case 1
        G04951978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 1

        Case Type of Deviation Cause Proceed to
        1 Vehicle deviates toward inner side (steering wheel is turned too much)
        • Actual turning radius is small
        • Television camera adjustment value deviated
        		 A
      2. Case 2
        Fig 3: Deviation Example - Case 2
        G04951979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 2

        Case Type of Deviation Cause Proceed to
        2 Vehicle deviates toward outer side (steering wheel is turned too little)
        • Actual turning radius is large
        • Television camera adjustment value deviated
        		 B
      3. Case 3
        Fig 4: Deviation Example - Case 3
        G04951980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 3

        Case Type of Deviation Cause Proceed to
        3 Regardless of side in which parking is performed, vehicle front deviates to right
        • Steering angle neutral point memory position deviated
        • Television camera adjustment value deviated
        		 C
      4. Case 4
        Fig 5: Deviation Example - Case 4
        G04951982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 4

        Case Type of Deviation Cause Proceed to
        4 Regardless of side in which parking is performed, vehicle front deviates to left
        • Steering angle neutral point memory position deviated
        • Television camera adjustment value deviated
        		 C
      5. Case 5
        Fig 6: Deviation Example - Case 5
        G06192516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 5

        Case Type of Deviation Cause Proceed to
        5 Regardless of side in which parking is performed, entire vehicle deviates to left
        • Steering angle neutral point memory position deviated
        • Television camera adjustment value deviated
        		 C
      6. Case 6
      Fig 7: Deviation Example - Case 6
      G05776501Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      DEVIATION REFERENCE CHART - CASE 6

      Case Type of Deviation Cause Proceed to
      6 Regardless of side in which parking is performed, entire vehicle deviates to right
      • Steering angle neutral point memory position deviated
      • Television camera adjustment value deviated
      		 C

    B:  Go to step  7

    C:  Go to step  9

    A: Go to Next Step 

  5. ADJUST HEIGHT CONTROL SENSOR AND SET CAMERA POSITION 
    1. Perform the height control sensor vehicle height difference setting (see CALIBRATION ).
    2. Perform the television camera optical axis adjustment (see CALIBRATION ).
    3. Check deviation
      1. Operate the advanced parking guidance system and check if the malfunction reoccurs.

        OK: 

        Returns to normal 

        NG:  Go to step  6

        OK: NORMAL 

  6. INSPECT WHEEL ALIGNMENT 

    HINT:

    For alignment inspection and adjustment, follow the toe-in and camber specifications.

    1. Perform the front wheel alignment inspection (see FRONT WHEEL ALIGNMENT (FOR 2WD) ).

      2. NG: ADJUST WHEEL ALIGNMENT 

      OK: REPLACE PARKING ASSIST ECU  (See REMOVAL )

    2. Perform the rear wheel alignment inspection (see REAR WHEEL ALIGNMENT ).
  7. INSPECT WHEEL ALIGNMENT 

    HINT:

    For alignment inspection and adjustment, follow the toe-in and camber specifications.

    1. Perform the front wheel alignment inspection (see FRONT WHEEL ALIGNMENT (FOR 2WD) ).

      2. NG:  Go to step  8

      OK: REPLACE PARKING ASSIST ECU  (See REMOVAL )

    2. Perform the rear wheel alignment inspection (see REAR WHEEL ALIGNMENT ).
  8. ADJUST HEIGHT CONTROL SENSOR AND SET CAMERA POSITION 
    1. Perform the height control sensor vehicle height difference setting (see CALIBRATION ).
    2. Perform the television camera optical axis adjustment (see CALIBRATION ).
    3. Check deviation
      1. Operate the advanced parking guidance system and check if the malfunction reoccurs.

        OK: 

        Returns to normal 

        NG: REPLACE PARKING ASSIST ECU  (See REMOVAL )

        OK: NORMAL 

  9. ADJUST STEERING ANGLE NEUTRAL POINT 
    1. Perform the steering angle neutral point calibration (see INITIALIZATION ).
    2. Check deviation
      1. Operate the advanced parking guidance system and check if the malfunction reoccurs.

        OK: 

        Returns to normal 

        NG:  Go to step  10

        OK: NORMAL 

  10. ADJUST HEIGHT CONTROL SENSOR AND SET CAMERA POSITION 
    1. Perform the height control sensor vehicle height difference setting (see CALIBRATION ).
    2. Perform the television camera optical axis adjustment (see CALIBRATION ).
    3. Check deviation
      1. Operate the advanced parking guidance system and check if the malfunction reoccurs.

        OK: 

        Returns to normal 

        NG:  Go to step  11

        OK: NORMAL 

  11. INSPECT WHEEL ALIGNMENT 

    HINT:

    For alignment inspection and adjustment, follow the toe-in and camber specifications.

    1. Perform the front wheel alignment inspection (see FRONT WHEEL ALIGNMENT (FOR 2WD) ).

      2. NG: ADJUST WHEEL ALIGNMENT 

      OK: REPLACE PARKING ASSIST ECU  (See REMOVAL )

    2. Perform the rear wheel alignment inspection (see REAR WHEEL ALIGNMENT ).
  12. INSPECT TIRE MOVEMENT DISTANCE 
    1. Check tire movement distance.
      Fig 8: Identifying Tire Movement Distance
      G04951977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. On a level surface, center the steering wheel and stop the vehicle.
      2. Apply chalk to a point on the tire and on the ground.
      3. Drive the vehicle straight ahead, and stop the vehicle after the tire rotates 5 times.
      4. Mark the vehicle's stop position on the ground, and measure the movement distance A mm (ft.). Check that the measured distance is within the standard range.

        Standard: 

        10281 to 11077 mm (33.7 to 36.3 ft.) 

        NG: CHANGE TIRE 

        OK: Go to Next Step 

  13. READ VALUE USING TECHSTREAM (WHEEL ODOMETER INFORMATION) 
    1. Select the item below in the Data List, and read its value displayed on the Techstream to check the wheel odometer information.

      Advanced Parking Guidance System 

      ADVANCED PARKING GUIDANCE SYSTEM DATA LIST

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Right Wheel Odometer Info Right Wheel Odometer Information/0 to 255 0 to 255 1 pulse = Approximately 2 cm (0.787 in.)
      Left Wheel Odometer Info Left Wheel Odometer Information/0 to 255 0 to 255 1 pulse = Approximately 2 cm (0.787 in.)

    Result 

    RESULT CHART

    Result Proceed to
    No malfunction A
    Right side's actual driving distance in different B
    Left side's actual driving distance in different C

    B: REPLACE REAR SPEED SENSOR RH  (See REMOVAL )

    C: REPLACE REAR SPEED SENSOR LH  (See REMOVAL )

    A: Go to Next Step 

  14. CHECK SYMPTOM 
    1. Parallel parking
      1. Move the vehicle to a level surface area with parking spaces.
      2. Using the advanced parking guidance system, perform parallel parking. Check how the vehicle deviates from the set parking position.

        HINT:

        Begin the check with the vehicle at a 45° angle to the parking space. Perform the check from the right and left side of the parking space.

      3. Select a case below that is most similar to the problem, and follow the instructions.
    2. Deviation examples
      1. Case 1
        Fig 9: Deviation Example - Case 1
        G04951978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 1

        Case Type of Deviation Cause Proceed to
        1 Vehicle deviates toward inner side (steering wheel is turned too much)
        • Actual turning radius is small
        • Television camera adjustment value deviated
        		 A
      2. Case 2
        Fig 10: Deviation Example - Case 2
        G04951979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 2

        Case Type of Deviation Cause Proceed to
        2 Vehicle deviates toward outer side (steering wheel is turned too little)
        • Actual turning radius is large
        • Television camera adjustment value deviated
        		 B
      3. Case 3
        Fig 11: Deviation Example - Case 3
        G04951980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 3

        Case Type of Deviation Cause Proceed to
        3 Regardless of side in which parking is performed, vehicle front deviates to right
        • Steering angle neutral point memory position deviated
        • Television camera adjustment value deviated
        		 C
      4. Case 4
        Fig 12: Deviation Example - Case 4
        G04951982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 4

        Case Type of Deviation Cause Proceed to
        4 Regardless of side in which parking is performed, vehicle front deviates to left
        • Steering angle neutral point memory position deviated
        • Television camera adjustment value deviated
        		 C
      5. Case 5
        Fig 13: Deviation Example - Case 5
        G04951982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 5

        Case Type of Deviation Cause Proceed to
        5 Regardless of side in which parking is performed, entire vehicle deviates to left
        • Steering angle neutral point memory position deviated
        • Television camera adjustment value deviated
        		 C
      6. Case 6
        Fig 14: Deviation Example - Case 6
        G05776501Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DEVIATION REFERENCE CHART - CASE 6

        Case Type of Deviation Cause Proceed to
        6 Regardless of side in which parking is performed, entire vehicle deviates to right
        • Steering angle neutral point memory position deviated
        • Television camera adjustment value deviated
        		 C

      B:  Go to step  17

      C:  Go to step  19

      A: Go to Next Step 

  15. ADJUST HEIGHT CONTROL SENSOR AND SET CAMERA POSITION 
    1. Perform the height control sensor vehicle height difference setting (see CALIBRATION ).
    2. Perform the television camera optical axis adjustment (see CALIBRATION ).
    3. Check deviation
      1. Operate the advanced parking guidance system and check if the malfunction reoccurs.

        OK: 

        Returns to normal 

        NG:  Go to step  16

        OK: NORMAL 

  16. INSPECT WHEEL ALIGNMENT 

    HINT:

    For alignment inspection and adjustment, follow the toe-in and camber specifications.

    1. Perform the front wheel alignment inspection (see FRONT WHEEL ALIGNMENT (FOR 2WD) ).

      2. NG: ADJUST WHEEL ALIGNMENT 

      OK: REPLACE PARKING ASSIST ECU  (See REMOVAL )

    2. Perform the rear wheel alignment inspection (see REAR WHEEL ALIGNMENT ).
  17. INSPECT WHEEL ALIGNMENT 

    HINT:

    For alignment inspection and adjustment, follow the toe-in and camber specifications.

    1. Perform the front wheel alignment inspection (see FRONT WHEEL ALIGNMENT (FOR 2WD) ).

      2. NG: Go to step 18 

      OK: REPLACE PARKING ASSIST ECU  (See REMOVAL )

    2. Perform the rear wheel alignment inspection (see REAR WHEEL ALIGNMENT ).
  18. ADJUST HEIGHT CONTROL SENSOR AND SET CAMERA POSITION 
    1. Perform the height control sensor vehicle height difference setting (see CALIBRATION ).
    2. Perform the television camera optical axis adjustment (see CALIBRATION ).
    3. Check deviation
      1. Operate the advanced parking guidance system and check if the malfunction reoccurs.

        OK: 

        Returns to normal 

        NG: REPLACE PARKING ASSIST ECU  (See REMOVAL )

        OK: NORMAL 

  19. ADJUST STEERING ANGLE NEUTRAL POINT 
    1. Perform the steering angle neutral point calibration (see INITIALIZATION ).
    2. Check deviation
      1. Operate the advanced parking guidance system and check if the malfunction reoccurs.

        OK: 

        Returns to normal 

        NG:  Go to step  20

        OK: NORMAL 

  20. ADJUST HEIGHT CONTROL SENSOR AND SET CAMERA POSITION 
    1. Perform the height control sensor vehicle height difference setting (see CALIBRATION ).
    2. Perform the television camera optical axis adjustment (see CALIBRATION ).
    3. Check deviation
      1. Operate the advanced parking guidance system and check if the malfunction reoccurs.

        OK: 

        Returns to normal 

        NG:  Go to step  21

        OK: NORMAL 

  21. INSPECT WHEEL ALIGNMENT 

    HINT:

    For alignment inspection and adjustment, follow the toe-in and camber specifications.

    1. Perform the front wheel alignment inspection (see FRONT WHEEL ALIGNMENT (FOR 2WD) ).

      2. NG: ADJUST WHEEL ALIGNMENT 

      OK: REPLACE PARKING ASSIST ECU  (See REMOVAL )

    2. Perform the rear wheel alignment inspection (see REAR WHEEL ALIGNMENT ).
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