Kia Cee'd: Lane Departure Warning System (LDWS) / Repair procedures
| Service Point Target Auto
Calibration (SPTAC) |
This procedure provides a way to calibrate the camera by having the service
technician align the car to a well lit simulated straight road target; preferably
wall mounted.
The LDWS camera will have a "System Out of Calibration" DTC set if not operating
within specified tolerances.
The LDWS will be supplied for field service replacement with the "System Calibration
Required / Variant Coding Error" DTC set if it is a replacement part delivered
directly from supplier manufacturing.
| 1. |
Guidelines for Selecting a Suitable Target
In order for LDWS Service Calibration-Static routine to complete successfully,
the following conditions are required:
| – |
Target (SST : 09890-3V100) surface must be perpendicular to
the camera in both horizontal and vertical orientation to maintain
maximum of 1° roll.
|
| – |
Target to be mounted to rigid backer material to maintain flatness
requirements.
|
| – |
Target must have reflective markings (not faded or poorly painted)
to represent lane features.
|
| – |
Target size is 30 cm wide by 100 cm high.
|
| – |
Mounting area must NOT have cross hatch patterns or textual
markings near the target.
|
| – |
Target should be well lit for optimal performance using non-fluctuating
illumination. There shall be no continuous shadow casted on
the target.
|
|
| 2. |
Service Point Target Auto Calibration Procedure
| (1) |
It is recommended to check vehicle toe-in and tire pressure
levels to ensure proper alignment of the camera to the "world"
before proceeding with calibration. The vehicle to run the calibration
routine is to be at nominal production loading capacity.
|
| (2) |
Windshield must be clean and silk-screen checked so that there
is no blockage of the camera.
|
| (3) |
Service technician connects the diagnostic connector and starts
the vehicle. The camera module should not be activated by pressing
the switch.
|
| (4) |
The service calibration routine may not run correctly if any
system level fault is active.
|
| (5) |
If working with a replacement ECU: the service technician initiates
the SPTAC Reset configuration.
|
| (6) |
Service technician either aligns the vehicle to the target or
the target to the vehicle.
| a. |
Bottom of the target is to be 90 ±1cm (35.4 ± 0.4in)
from the ground and aligned with the camera lens horizontal
axis.
|
The target (A) is placed along the vehicle’s
longitudinal axis (centerline) within ±3cm (±1.2
in) of target center. (Horizontal deviation
(B) : ±3cm (±1.2 in))
|
|
| b. |
The positon of target (A) in short distance is 0 ± 5cm
(0 ± 2 in) (B) in front of front bumper.
|
| c. |
The positon of target (A) in long distance is 100 ±
5cm (39.4 ± 2 in) (B) in front of front bumper.
|
• |
The tolerance angle of target in horizontal
direction is ± 10°.
|
|
• |
The tolerance angle of target in vertical
direction is ± 5°.
|
|
|
|
| (7) |
Technician ensures target placement location and checks the
"OK" message on the diagnostic tool (GDS).
|
| (9) |
Turn off IGN and then on.
|
|
Drive Test
|
System may not activate properly in the following conditions:
| – |
In case lane is not visible due to glare or heavy rain.
|
| – |
In case the road is covered with snow.
|
| – |
In case puddle on the road surface reflects street light or
head light from oncoming vehicle.
|
| – |
In case of blocking object such as sidewalk on the side of the
road.
|
| – |
In case of there is trace of more than one lane due to road
repair.
|
| – |
In case the distance to the foregoing vehicle is very short.
|
| – |
Be sure to run drive test to check normal operation after performing
optical angle test.
|
| – |
Drive on straight line road (longer than 500m) 2 white or yellow
lane marks at speed over 60Km/h, and check when the alert is
activated as you intentionally steer close to the lane mark.
|
| – |
LDWS operates properly if the lane mark segment space is less
than 8m.
|
| – |
LDWS activates at vehicle speed above 60Km/h.
|
| – |
Perform drive test on car-only road or on a highway.
|
|
Description
Block Diagram
LDWS is composed of below units
No
Item
Function
Position
1
LD ...
Description and operation