Frequently Cannot Detect the Vehicle Ahead / Detection Zone Is Short

FREQUENTLY CANNOT DETECT THE VEHICLE AHEAD / DETECTION ZONE IS SHORT

Description

The detection function may become unstable in the following cases.
- When radar reflections from the vehicle is interrupted.
- When driving a road with extremely sharp corners.
- When the sensor cannot detect a vehicle ahead while the vehicle ahead passes a hill or valley.


Diagnosis Procedure


1. VISUAL CHECK (1)

Check the contamination and foreign matter on the millimeter wave sensor area of the front bumper.
Does foreign material exist?
YES- GO TO 3.
NO- GO TO 2.

2. VISUAL CHECK (2)

1.Remove for front bumper. Refer to "Removal and Installation" Removal and Installation.
2.Check millimeter wave sensor for contamination and foreign material.
Does foreign material exist?
YES- GO TO 3.
NO- GO TO 4.

3. CLEAN DIRT AND FOREIGN MATERIALS

Clean the contamination and foreign material from the area around the millimeter wave sensor body window.
- GO TO 8.

4. VISUAL CHECK (3)

Check millimeter wave sensor for cracks and scratches.
Are there any cracks or scratches?
YES- GO TO 6.
NO- GO TO 5.

5. ADJUST MILLIMETER WAVE SENSOR ALIGNMENT

1.Install the front bumper. Refer to "Removal and Installation" Removal and Installation.
2.Adjust the millimeter wave sensor alignment. Refer to "Removal and Installation" Removal and Installation.
3.Perform ICC system action test. Refer to "Description" DCA.
4.Check that the vehicle ahead detection performance improves.
Does it improve?
YES- INSPECTION END
NO- GO TO 6.

6. REPLACE MILLIMETER WAVE SENSOR

1.Replace the millimeter wave sensor. Refer to "Removal and Installation" Removal and Installation.
2.Install the front bumper. Refer to "Removal and Installation" Removal and Installation.
3.Adjust the millimeter wave sensor alignment. Refer to "Description" Description.
4.Perform ICC system action test. Refer to "Description" DCA.
5.Check that the vehicle ahead detection performance improves.
Does it improve?
YES- INSPECTION END
NO- GO TO 7.

7. REPLACE ADAS CONTROL UNIT

Replace the ADAS control unit. Refer to "Removal and Installation" Removal and Installation.
Revision: March 20122013 Infiniti JX
- GO TO 8.

8. CHECK ICC SYSTEM

1.Erase "self-diagnosis result", and then perform "All DTC Reading" again after performing the action test.
(Refer to "Description" DCA for action test.)
2.Check that the ICC system is normal.
- INSPECTION END
Revision: March 20122013 Infiniti JX