Clearance Sonar System: Initialization

HINT:

The mid-point learning operation (steering angle mid-point, maximum steering angle) can be performed using 4 methods:

METHODS CHART

Method 1	Use intelligent tester to perform initial setting of mid-point	When clearance warning ECU is replaced When steering wheel mid-point or wheel alignment is adjusted When battery terminal is disconnected and reconnected When malfunction causes momentary drop in the power supply voltage (due to cranking, depleted battery, etc.) When steering sensor is removed and installed When steering sensor is replaced
Method 2	Use customize mode to perform initial setting of mid-point	When clearance warning ECU is replaced When steering wheel mid-point or wheel alignment is adjusted
Method 3	Perform steering angle mid-point learning operation by rotating steering wheel to left and right full lock position	When battery terminal is disconnected and reconnected When malfunction causes momentary drop in the power supply voltage (due to cranking, depleted battery, etc.) When steering sensor is removed and installed When steering sensor is replaced
Method 4	Perform steering angle mid-point learning operation by traveling in approximate straight line for extended distance	When battery terminal is disconnected and reconnected When malfunction causes momentary drop in the power supply voltage (due to cranking, depleted battery, etc.) When steering sensor is removed and installed When steering sensor is replaced

Method 1 (Intelligent tester)
1. Turn the engine switch off.
2. Connect the intelligent tester to the DLC3.
3. Turn the engine switch on (IG) and push the intelligent tester main switch ON.
4. Select the following menus: "DIAGNOSIS / OBD".
5. Perform the STEERING INIT procedure from the CLEARANCE SONAR menu.
  1. Tester screen flow:
    
    Fig 1: Performing STEERING INIT Procedure
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Method 2 (Manual operation method)
1. Using customize mode, set the mid-point and maximum steering angle.
  
  Fig 2: Setting Mid-Point And Maximum Steering Angle Using Customize Mode
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. *1: Steering wheel is centered (tires aligned straightforward).
  2. *2: If 180 seconds pass, steering angle mid-point setting and maximum steering angle range setting will not occur and initialize mode will end.
  Multi-information Display Indication Settings in Each Mode
  
  Fig 3: Multi-Information Display Indication Settings
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  bullet : Illumination
  
  circle : Flashing
  
  triangle: Flashes depending on condition
  
  x : No illumination or flashing
Method 3 (Manual operation method)
1. Turn the engine switch on (IG).
2. Turn the clearance sonar main switch ON.
3. Turn the steering wheel to the full left and right lock position.
  NOTE: Make sure to completely turn the steering wheel to the left and right full lock position.
4. Confirm that the learning operation has been completed by checking the multi-information display.
Method 4 (Manual operation method)
1. At an area with few turns and curves, and minimal traffic, drive at 20 km/h (12 mph) or more for 5 minutes or more.