Diagnosis Procedure

Diagnosis Procedure

Symptom check: In the following conditions, the warning chime may not sound even if the vehicle distance is short.

• When the Nissan Sentra vehicles are traveling at the same speed and the distance between vehicles is not changing.

• When the Nissan Sentra vehicle ahead is traveling faster and the distance between vehicles is increasing.

• The warning chime will not sound when the accelerator pedal is depressed, overriding the system.

• The warning chime will not sound when own Nissan Sentra vehicle approaches vehicles that are parked or moving slowly.

• The warning chime does not sound when the system does not detect any Nissan Sentra vehicle ahead. (Diagnose the conditions under which the system is detecting the vehicle ahead and when the system is malfunctioning. If there is any malfunction in detecting the Nissan Sentra vehicle ahead, check the system following the action test. Refer to Diagnosis Procedure.)

1. PERFORM ACTIVE TEST

   Check if the warning chime sounds on the active test item “ICC BUZZER” of “ICC/ADAS 2” with CONSULT.

   Does the warning chime sound?

   YES >>

   GO TO 2.

   NO >>

   GO TO 3.

2. CHECK THE MALFUNCTION SYMPTOM DURING WARNING CHIME OPERATION

   Understand the Nissan Sentra vehicle ahead detecting condition when the malfunction occurred. If the warning chime should have sounded, replace the ADAS control unit 2. Refer to Removal and Installation.

   >>

   GO TO 7.

3. CHECK DRIVER ASSISTANCE BUZZER

   Check if the warning chime sounds on the active test item ADAS buzzer 2 of “ICC/ADAS 2” with CONSULT.

   Is the inspection result normal?

   YES >>

   GO TO 4.

   NO >>

   GO TO 5.

4. PERFORM THE SELF-DIAGNOSIS OF ADAS CONTROL UNIT 2

   1. Perform “All DTC Reading” with CONSULT.

   2. Check if the any DTC is detected in self-diagnosis results of “ICC/ADAS 2”.

   Is any DTC detected?

   YES >>

   GO TO 5.

   NO >>

   GO TO 6.

5. REPAIR OR REPLACE MALFUNCTIONING PARTS

   Repair or replace malfunctioning parts.

   >>

   GO TO 7.

6. REPLACE ADAS CONTROL UNIT 2

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

   >>

   GO TO 7.

7. CHECK ICC SYSTEM

   1. Erase the self-diagnosis results, and then perform “All DTC Reading” again after performing the action test. Refer to Work Procedure.

   2. Check that the ICC system is normal.

   >>

   INSPECTION END