Nissan Sentra B18 (2020-2025) Service Manual: How to Erase Permanent Dtc

Nissan Sentra B18 (2020-2025) Service Manual / Transmission & Driveline / Transaxle & Transmission :: Cvt: Re0f15a / Basic Inspection / How to Erase Permanent Dtc

Description

Description

WHEN A DTC IS STORED IN TCM

When a DTC is stored in TCM and MIL is ON, a permanent DTC is erased with MIL shutoff if the same malfunction is not detected after performing the driving pattern for MIL shutoff three times in a raw.

Note:

The following timing chart is for DTC of two trip detection diagnosis.

In case of DTC of one trip detection diagnosis, when NG is detected at one trip, MIL turns ON and permanent DTC is displayed.

*1:

When the same malfunction is detected in two consecutive trips, MIL will illuminate.

*2:

MIL will turn off after Nissan Sentra vehicle is driven 3 times (driving pattern B) without any malfunctions.

*3:

Diagnosis condition ^*A and diagnosis delay time ^*A for each DTC are satisfied.

(*A: For details of these, refer to DTC/CIRCUIT DIAGNOSIS >> DTC (Pxxxx or Uxxx) >> DTC Description >> DTC DETECTION LOGIC.)

WHEN A DTC IS NOT STORED IN TCM

The erasing method depends on a permanent DTC stored in TCM.

For erase procedure of permanent DTC, refer to Work Procedure.

PERMANENT DTC ITEM

For permanent DTC items, MIL turns ON. Refer to DTC Index.

Work Procedure

Work Procedure

CHECK DTC

Check DTC.

Is any DTC detected?
YES >>
Repair malfunction(s) and erase DTC.
NO >>
GO TO 2.
CHECK PERMANENT DTC

With CONSULT
1. Ignition switch OFF and wait at least 60 seconds.
2. Ignition switch ON.
3. Ignition switch OFF and wait at least 60 seconds.
4. Ignition switch ON.
5. Select “PERMANENT DTC STATUS” mode with CONSULT.
With GST
1. Ignition switch OFF and wait at least 60 seconds.
2. Ignition switch ON.
3. Ignition switch OFF and wait at least 60 seconds.
4. Ignition switch ON.
5. Select Service $0A with GST.
Is any permanent DTC detected?
YES >>
GO TO 3.
NO >>
END
HOW TO ERASE PERMANENT DTC

CAUTION:

Always drive at a safe speed.
1. Perform "DTC CONFIRMATION PROCEDURE "of detected permanent DTC.
2. Drive the Nissan Sentra vehicle following to driving pattern.
  - The state of driving at 40 km/h (25 MPH) reaches 300 seconds or more in total.
  - Idle speed lasts 30 seconds or more.
  - A lapse of 600 seconds or more after engine start.
>>
GO TO 4.
CHECK PERMANENT DTC

With CONSULT
1. Ignition switch OFF and wait at least 60 seconds.
2. Ignition switch ON.
3. Ignition switch OFF and wait at least 60 seconds.
4. Ignition switch ON.
5. Select “PERMANENT DTC STATUS” mode with CONSULT.
With GST
1. Ignition switch OFF and wait at least 60 seconds.
2. Ignition switch ON.
3. Ignition switch OFF and wait at least 60 seconds.
4. Ignition switch ON.
5. Select Service $0A with GST.
Is any permanent DTC detected?
YES >>
GO TO 1.
NO >>
END

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...

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