Note
When any of the following parts have been replaced, perform adjustment shown in the following table. If not, the intelligent clearance sonar system may not operate correctly.
PRECAUTION (PROCEDURE 1)
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during intelligent clearance sonar system removal/installation are shown below.
For the installation location of the ultrasonic sensors, refer to Parts Location.
Part Name | Operation | Adjustment Item | Proceed to |
---|---|---|---|
Steering sensor |
|
Steering angle neutral point (Initialize intelligent clearance sonar system)* | Procedure 4 |
Suspension, tires, etc. | The vehicle height changes because of suspension or tire replacement | Ultrasonic sensor detection angle | Procedure 2, 3 |
Ultrasonic sensor detection angle registration | Procedure 4 | ||
Front bumper assembly |
|
Ultrasonic sensor detection angle | Procedure 2, 3 |
Ultrasonic sensor detection angle registration | Procedure 4 | ||
Rear bumper assembly |
|
Ultrasonic sensor detection angle | Procedure 2, 3 |
Ultrasonic sensor detection angle registration | Procedure 4 | ||
Clearance warning ECU assembly | Replacement | Ultrasonic sensor detection angle | Procedure 2, 3 |
Steering angle neutral point | Procedure 4 | ||
Bumper type registration | |||
Ultrasonic sensor detection angle registration | |||
Ultrasonic sensor |
|
Ultrasonic sensor detection angle | Procedure 2, 3 |
Ultrasonic sensor detection angle registration | Procedure 4 | ||
An ultrasonic sensor becomes misaligned | Ultrasonic sensor detection angle | Procedure 2, 3 | |
Ultrasonic sensor detection angle registration | Procedure 4 | ||
An ultrasonic sensor is subjected to impact | Ultrasonic sensor detection angle | Procedure 2, 3 | |
Ultrasonic sensor detection angle registration | Procedure 4 | ||
Battery | Cable is disconnected from the negative (-) battery terminal | Steering angle neutral point*1 | Procedure 4 |
*: The steering sensor zero point can also be calibrated by driving the vehicle.
PREPARATION (PROCEDURE 2)
Preparation
Digital angle gauge
Digital angle gauge attachment
Masking tape (To prevent damage)
A level
Confirm levelness of floor surface.
Place a bubble level on a level surface and confirm that the bubble is centered.
Note
Make sure that there is no gravel, sand, etc., and that the surface is not undulating.
Tech Tips
By adjusting the direction of the bubble level, it is possible to find a position where the bubble is centered.
Turn on the digital angle gauge.
Place the digital angle gauge in the same location and direction as that of the bubble level where the levelness of the surface was confirmed.
Note
Confirm that the location and direction of the digital angle gauge is exactly the same as that of the bubble level.
*a | Digital Angle Gauge | *b | Level |
Press the "ZERO" switch to memorize the zero point (perfectly level).
Note
Make sure that the digital angle gauge does not move when pressing the switch. If the digital angle gauge moves when the switch is pressed, an incorrect zero point may be memorized and it will not be possible to accurately check for levelness.
Using the digital angle gauge in which the zero point (perfectly level) has been memorized, measure the angle of the floor surface at the 4 positions at the front of the vehicle and the 4 positions at the rear of the vehicle as shown in the illustration.
Note
Always position the digital angle gauge in the direction shown in the illustration.
Make sure that there is no gravel, sand, etc., and that the floor surface is not undulating.
When measuring the angle of the floor surface, avoid uneven areas such as joints between tiles.
Tech Tips
If necessary, the digital angle gauge can be placed anywhere within the specified area when measuring the angle of the floor surface for positions A, C, F and H.
Confirmation Area | - | - |
Using the following worksheet, calculate the average of the measurements taken at the 4 positions in front of the vehicle, and calculate the average of the measurements taken at the 4 positions behind the vehicle. Confirm that the front measurement average and the rear measurement average are not more than approximately 0.37 degrees. Also, confirm that the front measurement average and the rear measurement average is less than 0.2 degrees.
Note
If the front measurement average and the rear measurement average are more than approximately 0.37 degrees or the difference between the front measurement average and the rear measurement average is 0.2 degrees or more, choose another work area as it is not possible to accurately check the installation angle of the sensors.
Figure 1. Worksheet:
Average the front measurement average and the rear measurement average, then round the answer to 1 decimal place (E.g. 0.0927 degrees is rounded to 0.1 degrees) to obtain the floor surface inclination value.
Calibrate the digital angle gauge
Adjust the angle of the digital angle gauge until it reads the same value of the floor surface inclination, then press the "ZERO" switch to memorize the zero point (level with floor surface).
Note
Before pressing the "ZERO" switch, confirm that the digital angle gauge reading is positive if the floor angle inclination is positive, and negative if the floor angle inclination is negative.
*1 | After calibrating, displays 90° when turned on its side |
*2 | Calibrating |
*1 | Digital angle gauge attachment |
*2 | Masking tape |
Prepare the digital angle gauge
Attach the digital angle gauge attachment to the digital angle gauge.
Attach masking tape to the digital angle gauge attachment.
Remove all luggage from the vehicle.
Adjust the tire inflation pressure to the specified pressure.
Check the height of the vehicle.
SENSOR HEIGHT AND ALIGNMENT INSPECTION (PROCEDURE 3)
Tech Tips
Check if the installation angle of each ultrasonic sensor is appropriate.
Preparation
Visually check that the bumper, grill and ultrasonic sensors are installed properly and are not damaged.
Note
If the bumper, grill or any ultrasonic sensor is not installed correctly, the calibration may not be able to be completed.
Check the tire pressures and adjust them if necessary.
Note
Ensure that the vehicle is level in an area with no wind.
Do not lean on the vehicle.
Do not do anything that may affect the level of the vehicle during the calibration, such as getting in or out of the vehicle, or adding or removing luggage.
Sensor height and alignment inspection
*1 | Center of Sensor |
*2 | Sensor Height |
Measure the installation height of the sensors.
Sensor Location | Sensor Height |
---|---|
Front Center Ultrasonic Sensor | 450.0 to 519.0 mm (17.7 to 20.4 in.) |
Front Corner Ultrasonic Sensor | 721.0 to 789.0 mm (28.4 to 31.1 in.) |
Sensor Location | Sensor Height |
---|---|
Front Center Ultrasonic Sensor | 589.0 to 658.0 mm (23.2 to 25.9 in.) |
Front Corner Ultrasonic Sensor | 721.0 to 789.0 mm (28.4 to 31.1 in.) |
Sensor Location | Sensor Height |
---|---|
Rear Center Ultrasonic Sensor | 626.0 to 707.0 mm (24.6 to 27.8 in.) |
Rear Corner Ultrasonic Sensor | 525.0 to 605.0 mm (20.7 to 23.8 in.) |
Note
If the installation height of a sensor is not as specified, it may not be possible to measure the sensor angles correctly. If so, unload the vehicle and measure the installation height of the sensors again.
Tech Tips
Use the center of the sensor as the measuring point.
*1 | Digital angle gauge |
*2 | Digital angle gauge attachment |
*3 | Ultrasonic Sensor |
Using the digital angle gauge, measure the angle of each sensor.
Measure the angle of the front sensors as shown in the illustration.
Note
Ensure that the digital angle gauge is flush with the face of the sensor.
Measure the angle of the rear sensors.
Note
Ensure that the digital angle gauge is flush with the face of the sensor.
*1 | Digital angle gauge |
*2 | Horizontal line |
*3 | Ultrasonic Sensor |
*4 | Digital angle gauge attachment |
Confirm that the angles of the sensors are as specified.
Note
The sensor angle is the measured sensor angle subtracted from 90°.
Tech Tips
The digital angle gauge should indicate 90° when turned on its side.
If the face of the sensor is tilted upwards, the sensor angle will be positive.
Sensor Location | Installation Angle |
---|---|
Front Center Ultrasonic Sensor | -2.6 to 6.6° |
Front Corner Ultrasonic Sensor | -5.7 to 3.5° |
Sensor Location | Installation Angle |
---|---|
Front Center Ultrasonic Sensor | -4.6 to 4.6° |
Front Corner Ultrasonic Sensor | -5.7 to 3.5° |
Sensor Location | Installation Angle |
---|---|
Rear Center Ultrasonic Sensor | -3.5 to 6.1° |
Rear Corner Ultrasonic Sensor | -4.5 to 4.9° |
If the angle or height of the sensors is not as specified, confirm that the installation is correct and then perform the inspection again.
REGISTRATION (PROCEDURE 4)
Preparation
Confirm that the following DTCs are not output.
System | Proceed to |
---|---|
Intelligent Clearance Sonar System |
Note
-If DTC C1AEC, C1AED, C1AF0, C1AF3, C1AF4, C1AEA or C168D are output at this point, it is not a malfunction. Proceed with the calibration.
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / IPA/ICS/Clearance Sonar / Utility.
Tester Display |
---|
Intuitive P/A Detection/Steering Adjustment |
According to the display on the GTS, perform calibration.
Tech Tips
If "Battery or Steering Sensor" is selected, further calibration is not required. (Bumper type registration is not required.)
Enter the bumper type using the GTS.
Bumper Type | Value |
---|---|
for Bar Type Radiator Grille | 1 |
for Mesh Type Radiator Grille | 2 |
Tech Tips
If the clearance warning ECU assembly is replaced or removed and installed, it is necessary to perform bumper type registration.
Using the GTS, enter the measured sensor values.
Note
The sensor angle is the measured sensor angle subtracted from 90°.
Tech Tips
The digital angle gauge should indicate 90° when turned on its side.
Disconnect the GTS from the DLC3.