Nissan Sentra Service Manual: Diagnosis and repair work flow

Nissan Sentra Service Manual / Restraints / SRS airbag control system / Basic inspection / Diagnosis and repair work flow

Work flow

OVERALL SEQUENCE

DETAILED FLOW

DETAILED FLOW

1.INTERVIEW THE CUSTOMER FOR THE SYMPTOM

Interview the customer for the symptom (the condition and the environment when the incident/malfunction occurs).

>> GO TO 2.

2.CHECK SYMPTOM

Check the symptom from the customer information.

>> GO TO 3.

3.CHECK WARNING LAMP OPERATION

Check air bag warning lamp operation in the user mode. Refer to SRC-15, "On Board Diagnosis Function".

Are any malfunction detected? YES >> GO TO 5.

NO >> GO TO 4.

4.CHECK LOW VOLTAGE

Check low voltage.

Are any malfunction detected? YES >> GO TO 9.

NO >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

5.CHECK SELF DIAGNOSTIC RESULTS

Check self diagnostic result with CONSULT or diagnosis mode.

If it is impossible to switch to diagnosis mode, follow the same procedure that DTC is not detected.

NOTE:

Perform the following procedure if DTC is detected.

Record DTC (Print them out with CONSULT.)
Erase self diagnostic result.
Study the relationship between the malfunction that DTC or air bag warning lamp indicates and the symptom that the customer describes.
Check related service bulletins for information.

Is DTC detected? YES >> GO TO 6.

NO >> GO TO 7.

6.PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC CONFIRMATION PROCEDURE for the DTC.

>> GO TO 8.

7.PERFORM DIAGNOSIS ACCORDING TO WARNING LAMP OPERATION

Check air bag warning lamp operation in the user mode. Refer to SRC-15, "On Board Diagnosis Function".
Perform Diagnosis Procedure for the air bag warning lamp operation. Refer to SRC-15, "On Board Diagnosis Function" (USER MODE).

>> GO TO 9.

8.DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the DTC.

>> GO TO 9.

9.REPAIR OR REPLACE THE MALFUNCTION PART

Repair or replace the malfunctioning part.

>> GO TO 10.

10.FINAL CHECK

Check self diagnostic result and air bag warning lamp operation in the user mode.

Is the malfunction repaired? YES >> INSPECTION END

NO >> GO TO 2.

Inspection and adjustment

Additional service when replacing control unit ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description WARNING: Always perform zero point reset using CONSULT when removing and installing th ...

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