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

Nissan Sentra B18 (2020-2025) Service Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning Control System :: Manual Air Conditioner / Basic Inspection / Diagnosis and Repair Workflow

Work Flow

Work Flow

OVERALL SEQUENCE

DETAILED FLOW

INTERVIEW CUSTOMER
1. Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred.
>>
GO TO 2.
SYMPTOM CHECK
1. Verify symptoms.
>>
GO TO 3.
CHECK FOR DTCS
1. CONSULT
  1. Ignition switch ON.
  2. Select “Self Diagnostic Result” mode of “HVAC”.
  3. Check DTC.
Is any DTC detected?
YES >>
GO TO 4.
NO >>
GO TO 5.
TROULE DIAGNOSIS BY DTC
1. Perform the diagnostic procedure for the detected DTC. Refer to DTC Inspection Priority Chart.
>>
GO TO 7.
OPERATION CHECK
1. Perform the operation check. Refer to Work Procedure.
>>
GO TO 6.
SYMPTOM DIAGNOSIS
1. Check the symptom diagnosis table. Refer to Symptom Table.
>>
GO TO 8.
VERIFY REPAIR
1. CONSULT
  1. Ignition switch ON.
  2. Select “Self Diagnostic Result” mode of “HVAC”.
  3. Check DTC.
Is any DTC detected?
YES >>
GO TO 4.
NO >>
GO TO 8.
PERFORM FINAL OPERATION CHECK
1. Perform the operation check. Refer to Work Procedure.
Does it operate normally?
YES >>
Inspection End.
NO >>
GO TO 2.

Operation Inspection

Work Procedure Work Procedure DESCRIPTION The purpose of the operational check is to check that the individual system operates normally. ...

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