Frequently Cannot Detect The Vehicle Ahead / Detection Zone Is Short

FREQUENTLY CANNOT DETECT THE VEHICLE AHEAD / DETECTION ZONE IS SHORT

Description

Symptom check: Detection function may become unstable under the following conditions.
- When the reflector of vehicle ahead is broken or dirty.
- When the vehicle is driving on a curve such as S-curve where the curvature changes.
- When the vehicle is driving on up-and-down road or passing the peak or foot of slope or passing the break of the inclination of hill.


Diagnosis Procedure


1. VISUAL CHECK (1)

Check ICC sensor integrated unit body window for contamination and foreign materials.
Do foreign materials adhere?
YES- GO TO 2.
NO- GO TO 3.

2. WIPE OUT DIRT AND FOREIGN OBJECTS

Wipe out the contamination and/or foreign materials from the ICC sensor integrated unit body window.
- GO TO 6.

3. VISUAL CHECK (2)

Check ICC sensor integrated unit body window for cracks and/or scratches.
Are there cracks?
YES- GO TO 5.
NO- GO TO 4.

4. LASER BEAM AIMING ADJUSTMENT

1.Adjust the laser beam aiming. Description.
2.Perform action test. Description(Distance Control Assist).
3.Check that the vehicle ahead detection performance improves.
Does it improve?
YES- INSPECTION END
NO- GO TO 5.

5. REPLACE ICC SENSOR INTEGRATED UNIT

1.Replace the ICC sensor integrated unit. DCA.
2.Adjust the laser beam aiming. Description.
- GO TO 6.

6. CHECK DCA SYSTEM

1.Erase "self-diagnosis result", and then perform "All DTC Reading" again after performing the action test.
(Description(Distance Control Assist) for action test.)
2.Check that the DCA system is normal.
- INSPECTION END