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

Work Flow

OVERALL SEQUENCE

DETAILED FLOW

1. 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)

   >>

   GO TO 2.

2. CHECK DTC

   CONSULT

   1. Check DTC of “All DTC Reading”.

   2. Perform the following procedure if DTC is displayed.

      • Record DTC and freeze frame data. (Or, write it down.)

   3. Check related service bulletins for information.

   Is any DTCs detected?

   YES >>

   Perform the trouble diagnosis for DTC indicated.

   NO >>

   GO TO 3.

3. 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.

4. 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.

5. CHECK ECO MODE SWITCH AND METER INDICATION

   1. Ignition switch OFF and wait at least 10 seconds.

   2. Ignition switch ON.

   3. Check that STANDARD is displayed on the information display screen of the combination meter.

   4. Check that the view of information display changes as ECO mode indicator signal (OFF).

   5. 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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