Diagnosis Procedure
WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
Symptom check: Detection function may become unstable under the following conditions.
- 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.
- VISUAL CHECK (1)
Check front bumper grille near the distance sensor (ICC sensor) for contamination and foreign materials.
Do foreign materials adhere?
YES
GO TO 2.
NO
GO TO 3.
- WIPE OUT DIRT AND FOREIGN OBJECTS
Wipe out the contamination and/or foreign materials from the front bumper grille near the distance sensor (ICC sensor).
GO TO 7.
- VISUAL CHECK (2)
Check distance sensor (ICC sensor) for cracks and/or scratches.
Are there cracks?
YES
GO TO 5.
NO
GO TO 4.
- PERFORM RADAR ALIGNMENT
- Perform radar alignment. Refer to Description .
- Perform action test. Refer to Description .
- Check that the vehicle ahead detection performance improves.
Does it improve?
YES
INSPECTION END
NO
GO TO 5.
- REPLACE DISTANCE SENSOR (ICC SENSOR)
- Replace the distance sensor (ICC sensor). Refer to Removal and Installation .
- Perform radar alignment. Refer to Description .
- Perform action test. Refer to Description .
- Check that the vehicle ahead detection performance improves.
Does it improve?
YES
INSPECTION END
NO
GO TO 6.
- REPLACE ADAS CONTROL UNIT
Replace the ADAS control unit. Refer to Removal and Installation .
GO TO 7.
- CHECK DCA SYSTEM
- Erase "self-diagnosis result", and then perform "All DTC Reading" again after performing the action test. (Refer to Description for action test.)
- Check that the DCA/FCW system is normal.
INSPECTION END