Nissan Sentra B18 (2020-2025) Service Manual: Basic Inspection
Diagnosis and Repair Work Flow
Work Flow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
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INTERVIEW FOR MALFUNCTION
It is also important to clarify the customer 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.
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SELF-DIAGNOSIS WITH CONSULT
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Perform “All DTC Reading” with CONSULT.
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Check if the DTC is detected on the self-diagnosis results of following.
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“ICC/ADAS 2”
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“LASER/RADAR”
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“LANE CAMERA”
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“Side radar (Rear left)”
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“Side radar (Rear right)”
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Is any DTC detected?
YES >>Record or print self-diagnosis results and freeze frame data (FFD). GO TO 5.
NO >>GO TO 3.
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ACTION TEST
Perform Following system action test to check the operation status. Refer to Work Procedure.
Check if any other malfunctions occur.
>>GO TO 4.
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SYMPTOM DIAGNOSIS
Perform the applicable diagnosis according to the diagnosis chart by symptom. Refer to Symptom Table.
>>GO TO 6.
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TROUBLE DIAGNOSIS BY DTC
- Erase self-diagnostic results.
- Ignition switch OFF → ON.
CAUTION:
Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
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Check the DTC in the self-diagnosis results.
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Perform trouble diagnosis for the detected DTC following.
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“ICC/ADAS 2”: Refer to DTC Index
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“LASER/RADAR”: Refer to DTC Index
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“LANE CAMERA”: Refer to DTC Index.
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“Side radar (Rear left)”: Refer to DTC Index
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“Side radar (Rear right)”: Refer to DTC Index
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If “DTC: U1000” is detected, first diagnose the CAN communication system or ITS communication system.
>>GO TO 6.
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MALFUNCTIONING PART REPAIR
Repair or replace the identified malfunctioning parts.
>>GO TO 7.
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REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT)
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Erases self-diagnosis results.
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Perform “All DTC Reading” again after repairing or replacing the specific items.
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Check if any DTC is detected in self-diagnosis results of following.
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“ICC/ADAS 2”
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“LASER/RADAR”
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“LANE CAMERA”
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“Side radar (Rear left)”
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“Side radar (Rear right)”
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Is any DTC detected?
YES >>GO TO 5.
NO >>GO TO 8.
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REPAIR CHECK (ACTION TEST)
Perform the action test. Check that the malfunction symptom is solved or no other symptoms occur. Refer to Work Procedure.
Is there a malfunction symptom?
YES >>GO TO 4.
NO >>INSPECTION END
Action Test
Work Procedure
Work Procedure
Always perform the AEB system action test to check that the system operates normally after replacing the ADAS control unit 2, replacing the front camera unit, or repairing any AEB system malfunction.
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CHECK AEB SYSTEM SETTING
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Start the engine.
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Check that the AEB system setting can be enabled/disabled on the information display.
INSPECTION END
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Other materials:
Squeak and Rattle Trouble Diagnoses
Work Flow
Work Flow
CUSTOMER INTERVIEW
Interview the customer if possible, to determine
the conditions that exist when the noise occurs. Use the Diagnostic
Worksheet during the interview to document the facts and conditions
when the noise occurs and any customer's comments; refer ...
Engine Does Not Start When Intelligent Key Is Inside of Vehicle (one Key)
Diagnosis Procedure
Diagnosis Procedure
DESCRIPTION
Engine does not start when push-button ignition
switch is pressed. (One Intelligent Key has the symptom, other keys
operate normally.)
SYMPTOM TABLE (ONE INTELLIGENT KEY HAS THE
SYMPTOM, OTHER KEYS OPERATE NORMALLY)
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Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen
terms
(Trouble
diagnosis content)
DTC detection condition
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