Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis and Repair Work Flow

Nissan Sentra B18 (2020-2025) Service Manual / Cruise Control & Driver Assistance / Driver Assistance System :: Driver Assistance System / Basic Inspection / Diagnosis and Repair Work Flow

Work Flow

Work Flow

OVERALL SEQUENCE

DETAILED FLOW

INTERVIEW FOR MALFUNCTION

It is important to clarify the customer’s concerns before starting the inspection. Interview the customer about the concerns carefully and understand the symptoms fully.
Note:
The customers are not professionals. Never assume that “maybe the customer means...” or “maybe the customer mentioned this symptom”.

>>
GO TO 2.
SELF-DIAGNOSIS WITH CONSULT

CONSULT
1. Perform “All DTC Reading” mode.
2. Check if the DTC is detected in the “Self Diagnostic Result” of the following:
  - “ICC/ADAS 2”
  - “LASER/RADAR”
  - “LANE CAMERA”
  - “Side radar (Rear left)”
  - “Side radar (Rear right)”
Is any DTC detected?
YES >>
Record or print self-diagnosis results and freeze frame data (FFD).GO TO 5.
NO >>
GO TO 3.
ACTION TEST
1. Perform the system action test to check the operation status of the following:
  - LDW: Refer to Work Procedure.
  - BSW: Refer to Work Procedure.
  - RCTA: Refer to Work Procedure.
  - I-DA: Refer to Work Procedure.
  - TSR: Refer to Work Procedure.
2. Check if any other malfunctions occur.
>>
GO TO 4.
SYMPTOM DIAGNOSIS

Perform the applicable diagnosis according to the diagnosis chart by symptom. Refer to Symptom Table.

>>
GO TO 6.
TROUBLE DIAGNOSIS BY DTC

CONSULT
1. Erase self-diagnostic results.
2. Ignition switch OFF → ON.
CAUTION:

Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
1. Check the DTC in the “Self Diagnostic Result”.
2. Perform trouble diagnosis for the following detected DTC:
  - “ICC/ADAS 2”: Refer to DTC Index.
  - “LASER/RADAR”: Refer to DTC Index.
  - “LANE CAMERA”: Refer to DTC Index.
  - “Side radar (Rear left)”: Refer to DTC Index.
  - “Side radar (Rear right)”: Refer to DTC Index.
Note:
If “DTC U1000” is detected, first diagnose the CAN communication system or ITS communication system.

>>
GO TO 6.
MALFUNCTIONING PART REPAIR

Repair or replace the identified malfunctioning parts.

>>
GO TO 7.
REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT)
1. Erase “Self Diagnostic Result”.
2. Perform “All DTC Reading” mode after repairing or replacing the specific items.
3. Check if any DTC is detected in self-diagnosis results of the following:
  - “ICC/ADAS 2”
  - “LASER/RADAR”
  - “LANE CAMERA”
  - “Side radar (Rear left)”
  - “Side radar (Rear right)”
Is any DTC detected?
YES >>
GO TO 5.
NO >>
GO TO 8.
REPAIR CHECK (ACTION TEST)

Perform the following system action test. Check that the malfunction symptom is solved or no other symptoms occur.
- LDW: Refer to Work Procedure.
- BSW: Refer to Work Procedure.
Is there a malfunction symptom?
YES >>
GO TO 4.
NO >>
Inspection End.

Basic Inspection

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