Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

The detection function may become unstable in the following cases.

When radar reflections from the vehicle ahead 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.

VISUAL CHECK (1)
Check the contamination and foreign matter on the distance sensor (ICC sensor) area of the front bumper.

Does foreign matter interfere?

YES

GO TO 3.

NO

GO TO 2.
VISUAL CHECK (2)
1. Remove the front bumper. Refer to Removal and Installation
2. Check distance sensor (ICC sensor) for contamination and foreign matter.
Does foreign matter interfere?

YES

GO TO 3.

NO

GO TO 4.
WIPE OUT DIRT AND FOREIGN MATERIALS
Wipe out the contamination and foreign matter in the area around the distance sensor (ICC sensor).

GO TO 8.
VISUAL CHECK (3)
Check distance sensor (ICC sensor) for cracks and scratches.

Are there any cracks or scratches?

YES

GO TO 6.

NO

GO TO 5.
ADJUST RADAR ALIGNMENT
1. Install the front bumper. Refer to Removal and Installation
2. Adjust the radar alignment.
3. Perform ICC system action test. Refer to Description .
4. Check that the vehicle ahead detection performance improves.
Does it improve?

YES

INSPECTION END

NO

GO TO 6.
REPLACE DISTANCE SENSOR (ICC SENSOR)
1. Replace the distance sensor (ICC sensor). Refer to Removal and Installation .
2. Install the front bumper. Refer to Removal and Installation
3. Adjust the radar alignment.
4. Perform ICC system action test. Refer to Description .
5. Check that the vehicle ahead detection performance improves.
Does it improve?

YES

INSPECTION END

NO

GO TO 7.
REPLACE ADAS CONTROL UNIT
Replace ADAS control unit. Refer to Removal and Installation .

GO TO 8.
CHECK ICC SYSTEM
1. Erase the self-diagnosis results, and then perform "All DTC Reading" again after performing the action test. (Refer to Description for action test.)
2. Check that the ICC system is normal.
INSPECTION END