Repair Procedures

Service Point Target Automatic Calibration (SPTAC)

This procedure provides a method of calibrating the camera by having the service technician align the vehicle with a well-lit simulated straight road target, preferably a wall. A DTC "System Out of Calibration" will be set for the LDWS camera if it does not operate within the specified tolerances. The LDWS will be supplied for field replacement with the DTC "System Calibration Required / Variant Coding Error" if it is a service part supplied directly from the supplier's production.

1. 1
   Target Selection Guidelines. The following conditions are required to successfully complete the LDWS static calibration procedure:

   A.	The target surface (SST: 09890-3V100) must be perpendicular to the camera in both horizontal and vertical orientation to maintain a maximum roll of 1°.

   B.	Target is mounted on a rigid backing material to meet flatness requirements.

   C.	The target must have reflective (not faded or poorly colored) markings so that it does not show lane features.

   D.	The size must be 30 cm wide and 100 cm high.

   E.	Installation area must NOT have cross-hatching or text markings near the target.

   F.	Target must be well lit for optimal operation using constant lighting. There must be no continuous shadows on the target.

   

2. 2
   Automatic Calibration Service Target Procedure

   1. Check the vehicle alignment and tire pressure to ensure correct alignment of the camera to the "world" before proceeding with calibration. The vehicle must be at its nominal production load capacity when performing the calibration procedure.
   2. The windshield must be clean, and the silk-screen print must be checked to ensure the camera is not blocked.
   3. Connect the diagnostic connector and start the vehicle. The camera module must not be activated by pressing the switch.
   4. The service calibration procedure may not operate correctly if any system-level fault is active.
   5. When replacing the ECU: the service technician initiates the SPTAC reset setting.
   6. The service technician aligns either the vehicle to the target or the target to the vehicle.

      A.	The lower edge of the target must be at a height of 90 cm ± 2 cm from the ground and aligned with the horizontal axis of the camera lens.

      B.	Position the target along the longitudinal axis (centerline) of the vehicle within ± 5 cm of the target center.

      C.	The calibration target must be positioned 2.7 m from the center of the front wheel (1.74 m from the bumper).

   7. The technician checks the target installation position and verifies the "OK" message on the diagnostic tool (GDS).
   8. Clear all DTCs.
   9. Turn the ignition OFF and then ON.

Road Test

May not activate normally under the following conditions. When the lane is not visible due to bright light or heavy rain. When the road is covered with snow. When a puddle on the road surface reflects street lights or the headlights of oncoming vehicles. In case of a blocking object, such as a curb on the side of the road. When there are traces of more than one lane due to road repair. When the distance to the vehicle ahead is very short. Be sure to run the disc test to check normal operation after performing the optical angle test. Drive on a straight road (longer than 500 m) past 2 white or yellow road markings at a speed greater than 60 km/h, and check when the warning activates as you deliberately approach the lane markings. The LDWS operates normally if the distance between lane marking segments is less than 8 m. LDWS activates when vehicle speed is above 60 km/h. Perform the road test on a public road or highway.