Nissan Sentra B18 (2020-2025) Service Manual: Frequently Cannot Detect the Vehicle Ahead / Detection Zone Is Short

Nissan Sentra B18 (2020-2025) Service Manual / Cruise Control & Driver Assistance / Driver Assistance System :: Driver Assistance System / Symptom Diagnosis / Frequently Cannot Detect the Vehicle Ahead / Detection Zone Is Short

Diagnosis Procedure

Diagnosis Procedure

Symptom check: Detection function may become unstable under the following conditions:

When the Nissan Sentra vehicle is driving on a curve such as an S-curve where the curvature changes.
When the vehicle is driving on an up-and-down road or passing the peak or foot of a slope or passing the break of the inclination of a hill.

VISUAL CHECK (1)

Check distance sensor for contamination and foreign materials.

Does contamination or foreign materials exist?
YES >>
GO TO 2.
NO >>
GO TO 3.
WIPE OUT DIRT AND FOREIGN MATERIAL

Clean the contamination and foreign material from the distance sensor.

>>
GO TO 7.
VISUAL CHECK (2)

Check distance sensor and distance sensor bracket for damage or looseness.

Does damage or looseness exist?
YES >>
Repair or replace affected components. Refer to Removal and Installation.
NO >>
GO TO 4.
PERFORM RADAR ALIGNMENT
1. Perform radar alignment. Refer to Work Procedure.
2. Perform action test. Refer to Work Procedure.
3. Check that the Nissan Sentra vehicle ahead detection performance improves.
Does it improve?
YES >>
Inspection End.
NO >>
GO TO 5.
REPLACE DISTANCE SENSOR
1. Replace the distance sensor. Refer to Removal and Installation.
2. Perform radar alignment. Refer to Work Procedure.
3. Perform action test. Refer to Work Procedure.
4. Check that the Nissan Sentra vehicle ahead detection performance improves.
Does it improve?
YES >>
Inspection End.
NO >>
GO TO 6.
REPLACE ADAS CONTROL UNIT 2

Replace the ADAS control unit 2. Refer to Removal and Installation.

>>
GO TO 7.
CHECK ICC SYSTEM
1. Erase “Self Diagnostic Result”, and then perform “All DTC Reading” again after performing the action test. (Refer to Work Procedure for action test.)
2. Check that the ICC system is normal.
>>
Inspection End.

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Other materials:

Vehicle-to-vehicle distance control mode switches
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Heated seat switches
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Dtc Description
DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition ...