Nissan Sentra B18 (2020-2025) Service Manual: Basic Inspection. Diagnosis and Repair Work Flow
Diagnosis and Repair Work Flow
Work Flow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
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GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the “Diagnostic Work Sheet”. (Refer to Diagnostic Work Sheet (ECM) or Diagnostic Work Sheet (TCM).
>>GO TO 2.
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CHECK DTC
CONSULT-
Check DTC of “All DTC Reading”.
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Perform the following procedure if DTC is displayed.
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Record DTC and freeze frame data. (Or, write it down.)
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Check related service bulletins for information.
Is any DTCs detected?
YES >>Perform the trouble diagnosis for DTC indicated.
NO >>GO TO 3.
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CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
Also study the normal operation related to the system. Refer to System Description.
>>GO TO 4.
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CHECK ECO MODE SWITCH CIRCUIT
Check ECO mode switch circuit. Refer to Diagnosis Procedure.
Is inspection result normal?
YES >>GO TO 5.
NO >>Repair or replace malfunctioning component.
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CHECK ECO MODE SWITCH AND METER INDICATION
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Ignition switch OFF and wait at least 10 seconds.
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Ignition switch ON.
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Check that STANDARD is displayed on the information display screen of the combination meter.
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Check that the view of information display changes as ECO mode indicator signal (OFF).
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Check that the view of information display changes as ECO mode indicator signal (ON).
Is the inspection result normal?
YES >>Inspection End.
NO >>Check intermittent incident. Refer to Intermittent Incident.
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Other materials:
C1608-46 Control Unit
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
...
Heated seat switches
WARNING
Do not use the seat heater, or allow passengers to use it, if you or they
cannot monitor elevated seat temperatures or have reduced sensitivity to pain in
body areas contacting the seat. Use of the heated seats under these conditions could
result in serious injury.
CAUTION
Th ...
Transmission Range Switch Circuit
Diagnosis Procedure
Diagnosis Procedure
CHECK HARNESS CONNECTOR
Ignition switch OFF.
Check the mating condition of TCM
harness connector and CVT unit harness
connector.
Is the inspect ...