Nissan Sentra manuals

Nissan Sentra B18 (2020-2025) Service Manual: After Replacing ECM

Nissan Sentra B18 (2020-2025) Service Manual / Engine / After Replacing ECM

  1. CHECK ‘OPERATION LOG’

    With CONSULT

    Check Operation Log saved before replacing ECM, according to the procedure of “Programming” in CONSULT Operation Manual.

    Note:

    For the Nissan Sentra vehicle that the programming is to be performed, check if Operation Log of Vehicle Identification Number (VIN) is in Saved Data List.

    Is there an applicable Operation Log in the Saved Data List?

    YES >>

    GO TO 2.

    NO >>

    GO TO 3.

  2. PERFORM ECM PROGRAMMING

    With CONSULT

    Perform ECM programming, according to “Programming” of CONSULT Operation Manual. Refer to CONSULT Operation Manual.

    CAUTION:

    During programming, maintain the following conditions:

    • Ignition switch: ON

    • Electric load: OFF

    • Brake pedal: Not depressed

    • Battery voltage: 12 – 13.5 V (Check the value displayed on the CONSULT screen.)

    >>

    GO TO 5.

  3. READ IN ECM PART NUMBER BY ‘FAST LINKED’

    Obtain ECM part number by NISSAN PARTS CATALOGUE GLOBAL Web-FAST, according to the procedure of ‘FAST linked’ in CONSULT Operation Manual. Refer to CONSULT Operation Manual.

    Note:

    ‘FAST linked’ allows an appropriate programming by obtaining ECU part number from NISSAN PARTS CATALOGUE GLOBAL Web-FAST even when the part number cannot be obtained from the old ECU used before replacing with a new one.

    >>

    GO TO 4.

  4. PERFORM ECM PROGRAMMING (FAST LINKED)

    With CONSULT

    Perform ECM programming according to the procedure of FAST linked in CONSULT Operation Manual. Refer to CONSULT Operation Manual.

    CAUTION:

    During programming, maintain the following conditions:

    • Ignition switch: ON

    • Electric load: OFF

    • Brake pedal: Not depressed

    • Battery voltage: 12 – 13.5 V (Check the value displayed on the CONSULT screen.)

    >>

    GO TO 5.

  5. PERFORM INITIALIZATION OF IVIS (NATS) SYSTEM AND REGISTRATION OF ALL IVIS (NATS) IGNITION KEY IDS

    Refer to Work Procedure.

    >>

    GO TO 6.

  6. CHECK ECM DATA STATUS

    Check if the data is successfully copied from the ECM at Step 1 (before replacement) and saved in CONSULT.

    Is the data saved successfully?

    YES >>

    GO TO 7.

    NO >>

    GO TO 8.

  7. WRITE ECM DATA

    With CONSULT

    1. Select “WRITING DATA FOR REPLC CPU” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

    2. Follow the instruction of CONSULT display.

    Note:

    The data saved by “SAVING DATA FOR REPLC CPU” is written to ECM.

    >>

    GO TO 9.

  8. PERFORM VIN REGISTRATION

    Refer to Work Procedure.

    >>

    GO TO 9.

  9. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

    Perform accelerator pedal released position learning. Refer to Work Procedure.

    >>

    GO TO 10.

  10. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

    Perform throttle valve closed position learning. Refer to Work Procedure.

    >>

    GO TO 11.

  11. PERFORM IDLE AIR VOLUME LEARNING

    Perform idle air volume learning. Refer to Work Procedure.

    >>

    END

Accelerator Pedal Released Position Learning

Work Procedure

Work Procedure

Description

Accelerator Pedal Released Position Learning is a function of ECM to learn the fully released position of the accelerator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time harness connector of accelerator pedal position sensor or ECM is disconnected.

Work Procedure

  1. START

    1. Make sure that accelerator pedal is fully released.

    2. Turn ignition switch ON and wait at least 2 seconds.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Repeat steps 2 to 3 for three times.

    >>

    END

Basic Inspection

Work Procedure

Work Procedure

  1. INSPECTION START

    1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance.

    2. Open engine hood and check the following:

      • Harness connectors for improper connections

      • Wiring harness for improper connections, pinches and cut

      • Vacuum hoses for splits, kinks and improper connections

      • Hoses and ducts for leaks

      • Air cleaner clogging

      • Gasket

    3. Confirm that electrical or mechanical loads are not applied.

      • Headlamp switch is OFF.

      • Air conditioner switch is OFF.

      • Rear window defogger switch is OFF.

      • Steering wheel is in the straight-ahead position, etc.

    4. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.

      Ensure engine stays below 1,000 rpm.

    5. Run engine at about 2,000 rpm for about 2 minutes under no load.

    6. Make sure that no DTC is displayed with CONSULT or Diagnostic Test Mode II (self-diagnostic results).

    Is any DTC detected?

    YES >>

    GO TO 2.

    NO >>

    GO TO 3.

  2. REPAIR OR REPLACE

    Repair or replace components as necessary according to corresponding Diagnostic Procedure.

    >>

    GO TO 3.

  3. CHECK TARGET IDLE SPEED

    1. Run engine at about 2,000 rpm for about 2 minutes under no load.

    2. Rev engine (2,000 to 3,000 rpm) two or three times under no load, then run engine at idle speed for about 1 minute.

    3. Check idle speed.

      For procedure, Refer to IDLE SPEED : Periodic Maintenance.

      For specification, Refer to IDLE SPEED : Service Data.

    Is the inspection result normal?

    YES >>

    GO TO 10.

    NO >>

    GO TO 4.

  4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

    1. Stop the engine.

    2. Perform accelerator pedal released position learning. Refer to Work Procedure.

    >>

    GO TO 5.

  5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

    Perform throttle valve closed position learning. Refer to Work Procedure.

    >>

    GO TO 6.

  6. PERFORM IDLE AIR VOLUME LEARNING

    Perform idle air volume learning. Refer to Work Procedure.

    Is Idle Air Volume Learning carried out successfully?

    YES >>

    GO TO 7.

    NO >>

    Follow the instruction of IDLE AIR VOLUME LEARNING. Then GO TO 4.

  7. CHECK TARGET IDLE SPEED AGAIN

    1. Start engine and warm it up to normal operating temperature.

    2. Check idle speed.

      For procedure, Refer to IDLE SPEED : Periodic Maintenance.

      For specification, Refer to IDLE SPEED : Service Data.

    Is the inspection result normal?

    YES >>

    GO TO 10.

    NO >>

    GO TO 8.

  8. DETECT MALFUNCTIONING PART

    Check the Following.

    • Check intake camshaft position sensor and circuit. Refer to DTC Description.

    • Check exhaust camshaft position sensor and circuit. Refer to DTC Description.

    • Check crankshaft position sensor and circuit. Refer to DTC Description.

    Is the inspection result normal?

    YES >>

    GO TO 9.

    NO >>

    Repair or replace. Then GO TO 4.

  9. CHECK ECM FUNCTION

    Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)

    >>

    GO TO 4.

  10. CHECK IGNITION TIMING

    1. Run engine at idle.

    2. Check ignition timing with a timing light.

      : Timing indicator

      For procedure, Refer to IGNITION TIMING : Periodic Maintenance.

      For specification, Refer to IGNITION TIMING : Service Data.

    Is the inspection result normal?

    YES >>

    GO TO 19.

    NO >>

    GO TO 11.

  11. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

    1. Stop the engine.

    2. Perform accelerator pedal released position learning. Refer to Work Procedure.

    >>

    GO TO 12.

  12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

    Perform throttle valve closed position learning. Refer to Work Procedure.

    >>

    GO TO 13.

  13. PERFORM IDLE AIR VOLUME LEARNING

    Perform idle air volume learning. Refer to Work Procedure.

    Is Idle Air Volume Learning carried out successfully?

    YES >>

    GO TO 14.

    NO >>

    Follow the instruction of IDLE AIR VOLUME LEARNING. Then GO TO 4.

  14. CHECK TARGET IDLE SPEED AGAIN

    1. Start engine and warm it up to normal operating temperature.

    2. Check idle speed.

      For procedure, Refer to IDLE SPEED : Periodic Maintenance.

      For specification, Refer to IDLE SPEED : Service Data.

    Is the inspection result normal?

    YES >>

    GO TO 15.

    NO >>

    GO TO 17.

  15. CHECK IGNITION TIMING AGAIN

    1. Run engine at idle.

    2. Check ignition timing with a timing light.

      : Timing indicator

      For procedure, Refer to IGNITION TIMING : Periodic Maintenance.

      For specification, Refer to IGNITION TIMING : Service Data.

    Is the inspection result normal?

    YES >>

    GO TO 19.

    NO >>

    GO TO 16.

  16. CHECK TIMING CHAIN INSTALLATION

    Check timing chain installation. Refer to Removal and Installation.

    Is the inspection result normal?

    YES >>

    GO TO 17.

    NO >>

    Repair the timing chain installation. Then GO TO 4.

  17. DETECT MALFUNCTIONING PART

    Check the Following.

    • Check intake camshaft position sensor and circuit. Refer to DTC Description.

    • Check exhaust camshaft position sensor and circuit. Refer to DTC Description.

    • Check crankshaft position sensor and circuit. Refer to DTC Description.

    Is the inspection result normal?

    YES >>

    GO TO 18.

    NO >>

    Repair or replace. Then GO TO 4.

  18. CHECK ECM FUNCTION

    Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)

    >>

    GO TO 4.

  19. INSPECTION END

    If ECM is replaced during this BASIC INSPECTION procedure, Refer to Work Procedure.

    >>

    INSPECTION END

Cumulative Battery Discharge Current Clear

Description

Description

Cumulative Battery Discharge Current Clear is a function of ECM to erase the cumulative battery discharge current. It must be performed when battery is replaced. (For details, refer to Work Procedure.)

Work Procedure

Work Procedure

  1. ERASE CUMULATIVE BATTERY DISCHARGE CURRENT

    With CONSULT

    1. Turn ignition switch ON.

    2. Select “CML B/DCHRG CRNT CLEAR” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

    3. Touch “CLEAR” and erase cumulative battery discharge current.

    >>

    INSPECTION END

Egr Volume Control Valve Position Learning

Work Procedure

Work Procedure

DESCRIPTION

EGR Volume Control Valve Closed Position Learning is a function of ECM to learn the fully closed position of the EGR volume control valve by monitoring the EGR volume control valve output signal. It must be performed under any of the following conditions:

WORK PROCEDURE

  1. START

    1. Turn ignition switch ON.

    2. Select “EGR Control Valve Closed Position Learning” in “WORK SUPPORT” of “ENGINE”.

    3. Touch “Start”.

    4. Turn ignition switch OFF and wait at least 3 seconds.

      Note:

      Learning is completed during a self-shutoff of the EGR volume control valve.

    >>

    END

Fuel Pressure Check

Work Procedure

Work Procedure

FUEL PRESSURE RELEASE

  1. FUEL PRESSURE RELEASE

    With CONSULT

    1. Turn ignition switch ON.

    2. Perform “ENGINE” in “WORK SUPPORT” mode with CONSULT.

    3. Start the engine.

    4. After engine stalls, crank it two or three times to release all fuel pressure.

    5. Turn ignition switch OFF.

    Without CONSULT

    1. Remove fuel pump fuse located in IPDM E/R.

    2. Start the engine.

    3. After engine stalls, crank it two or three times to release all fuel pressure.

    4. Turn ignition switch OFF.

    5. Reinstall fuel pump fuse after servicing fuel system.

    >>

    INSPECTION END

FUEL PRESSURE CHECK

  1. FUEL PRESSURE CHECK

    1. Release fuel pressure.

    2. Connect fuel hose for fuel pressure check (B) to fuel pressure gauge (A). Then, connect fuel hose for fuel pressure check to fuel tube adapter (SST: KV10120000) (D) with hose clamp (C).

      : To high pressure fuel pump

      : To quick connector

      CAUTION:

      • Use suitable fuel hose for fuel pressure check (genuine NISSAN fuel hose)

      • To avoid unnecessary force or tension to hose, use moderately long fuel hose for fuel pressure check.

      • Wipe off oil or dirt from hose insertion part using cloth moistened with gasoline.

      • Apply proper amount of gasoline on the hose insertion part.

      • Use NISSAN genuine hose clamp (part number: 16439 N4710 or 16439 N4710)

      • Install hose clamp to the hose end position within 1- 2 mm (0.04 - 0.08 in) and tighten hose clamp to the specified torque.

      Tightening torque: 1 - 1.5 N·m (0.1 - 0.15 kg−m)

    3. Disconnect quick connector and disconnect fuel feed hose from high pressure fuel pump. Refer to Exploded View.

      CAUTION:

      • Make sure to release fuel pressure before removal of fuel line.

      • Do the following procedure in the place where ventilation is good without the combustible.

      Note:

      • Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pressure cannot be completely released because this models do not have fuel return system.

      • Use fuel tube adapter (SST: KV10120000) and fuel pressure gauge (SST: ST19590000) to check fuel pressure.

    4. Install fuel hose for fuel pressure check to high pressure fuel pump with hose clamp.

      CAUTION:

      • Wipe off oil or dirt from hose insertion part using cloth moistened with gasoline.

      • Apply proper amount of gasoline on the hose insertion part.

      • Insert fuel hose for fuel pressure check until it touchesthe spool on high pressure fuel pump .

      • Use NISSAN genuine hose clamp (part number: 16439 N4710 or 16439 40U00).

      • Install hose clamp to the hose end position within 1- 2 mm (0.04 - 0.08 in) and tighten hose clamp to the specified torque.

        Tightening torque: 1 - 1.5 N·m (0.1 - 0.15 kg−m)

      • After connecting fuel hose for fuel pressure check, pull the hose with a force of approximately 100 N (approximately 10 kg, 22 lb) to confirm fuel sub tube does not come off.

    5. Install fuel pressure check adapter to quick connector of fuel feed hose.

    6. Turn ignition switch ON and check for fuel leakage.

    7. Start engine and check for fuel leakage.

    8. Stop the engine.

    9. Turn ignition switch ON and read the indication of fuel pressure gauge (A).

      At ignition switch ON

      : Approximately 450 kPa (4.5 bar, 4.59 kg/cm2, 65.25 psi)

    Is the inspection result normal?

    YES >>

    INSPECTION END

    NO >>

    GO TO 2.

  2. CHECK FUEL HOSE

    Check fuel hose for clogging.

    Is the inspection result normal?

    YES >>

    Repair or replace the malfunctioning part.

    NO >>

    Replace fuel filter and fuel pump assembly. Refer to Removal and Installation.

How to Set Srt Code

Description

Description

OUTLINE

In order to set all SRTs, the self-diagnoses as in the “SRT ITEM” table must have been performed at least once. Each diagnosis may require actual driving for a long period of time under various conditions.

SRT ITEM

The table below shows required self-diagnostic items to set the SRT to “CMPLT”.

SRT item*

(CONSULT indication)

Required self-diagnostic items to set the SRT to “CMPLT”

Corresponding DTC No.

FUEL SYSTEM

Cylinder air-fuel inbalance

P0171, P0172

CATALYST

Three way catalyst function

P0420

MISFIRE

Cylinder function

P0300, P0301, P0302, P0303, P0304

EVAP SYSTEM

EVAP control system purge flow monitoring

P0441

EVAP control system

P0456

HO2S HTR

Air fuel ratio (A/F) sensor 1 heater

P0031, P0032, P0053

Heated oxygen sensor 2 heater

P0037, P0038, P00D2

HO2S

Air fuel ratio (A/F) sensor 1

P0130, P0131, P0132, P014C, P014D, P015A, P015B, P219A, P219C, P219D, P219E, P219F, P2096, P2097, P2237, P2238, P2239, P2251, P2252, P2253, P2297

Heated oxygen sensor 2

P0136, P0137, P0138, P0139, P2270, P2271, P2A01

EGR/VVT SYSTEM

Intake/Exhaust valve timing control function

P0011, P0012, P0014, P0016, P0401, P0402, P052A, P052B

*: Though displayed on the CONSULT screen, “HO2S HTR” is not SRT item.

SRT SERVICE PROCEDURE

If a Nissan Sentra vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review the flowchart diagnostic sequence, referring to the following flowchart.

Srt Set Driving Pattern

SRT Set Driving Pattern

CAUTION:

Always drive the vehicle in safe manner according to traffic conditions and obey all traffic laws.

Note:

*1: Depress the accelerator pedal until Nissan Sentra vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal and keep it released for more than 10 seconds. Depress the accelerator pedal until Nissan Sentra vehicle speed is 90 km/h(56 MPH) again.

*2: Checking the vehicle speed with GST is advised.

*: Normal conditions refer to the following:

Work Procedure

Work Procedure

  1. CHECK DTC

    Check DTC.

    Is any DTC detected?

    YES >>

    Repair malfunction(s) and erase DTC. Refer to DTC Index.

    NO >>

    GO TO 2.

  2. CHECK SRT STATUS

    With CONSULT

    Select “SRT STATUS” in “DTC & SRT CONFIRMATION” using CONSULT.

    Without CONSULT

    Perform “SRT status” mode with Diagnosis Description.

    With GST

    Select Service $01 with GST.

    Is SRT code(s) set?

    YES >>

    END

    NO-1 >>

    With CONSULT: GO TO 3.

    NO-2 >>

    Without CONSULT: GO TO 4.

  3. DTC CONFIRMATION PROCEDURE

    1. Select “SRT WORK SUPPORT” in “DTC & SRT CONFIRMATION” using CONSULT.

    2. For SRT(s) that is not set, perform the corresponding “DTC CONFIRMATION PROCEDURE” according to the “Performance Priority” in the “SRT ITEM” table. Refer to Description.

    3. Check DTC.

    Is any DTC detected?

    YES >>

    Repair malfunction(s) and erase DTC. Refer to DTC Index.

    NO >>

    GO TO 9.

  4. PERFORM ROAD TEST

    • Check the “Performance Priority” in the “SRT ITEM” table. Refer to Description.

    • Perform the most efficient SRT set driving pattern to set the SRT properly. Refer to SRT Set Driving Pattern.

      In order to set all SRTs, the SRT set driving pattern must be performed at least once.

    >>

    GO TO 5.

  5. PATTERN 1

    1. Check the Nissan Sentra vehicle condition;

      • Engine coolant temperature is −10 to 35°C (14 to 95°F).

      • Fuel tank temperature is more than 0°C (32°F).

    2. Start the engine.

    3. Keep engine idling until the engine coolant temperature is greater than 70°C (158°F)

    Note:

    ECM terminal voltage is follows;

    • Engine coolant temperature

      • −10 to 35°C (14 to 95°F): 3.0 - 4.3 V

      • 70°(158°F): Less than 1.4 V

    >>

    GO TO 6.

  6. PATTERN 2

    1. Drive the Nissan Sentra vehicle. And depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal and keep it released for more than 10 seconds.

    2. Depress the accelerator pedal until Nissan Sentra vehicle speed is 90 km/h (56 MPH) again

    Note:

    • Checking the Nissan Sentra vehicle speed with GST is advised.

    • When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted. In this case, the time required for diagnosis may be extended.

    >>

    GO TO 7.

  7. PATTERN 3

    • Operate Nissan Sentra vehicle following the driving pattern shown in the figure.

    • Release the accelerator pedal during deceleration of Nissan Sentra vehicle speed from 90 km/h (56 MPH) to 0 km/h (0 MPH).

    >>

    GO TO 8.

  8. PATTERN 4

    • Operate Nissan Sentra vehicle following the driving pattern shown in the figure.

      • Drive the Nissan Sentra vehicle in a proper gear at 60 km/h (38 MPH) and maintain the speed.

      • Release the accelerator pedal fully at least 5 seconds.

      • Repeat the above two steps at least 5 times.

    >>

    GO TO 9.

  9. PATTERN 5

    • The accelerator pedal must be held very steady during steady-state driving.

    • If the accelerator pedal is moved, the test must be conducted again.

    >>

    GO TO 10.

  10. CHECK SRT STATUS

    With CONSULT

    Select “SRT STATUS” in “DTC & SRT CONFIRMATION” using CONSULT.

    WITHOUT CONSULT

    Perform “SRT status” mode with Diagnosis Description.

    With GST

    Select Service $01 with GST.

    Is SRT(s) set?

    YES >>

    END

    NO >>

    Perform this procedure again.

How to Erase Permanent Dtc

Work Procedure

Work Procedure

OUTLINE

When a DTC is stored in control module

When a DTC is stored in control module 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.

*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.

When a DTC is not stored in control module

The erasing method depends on a permanent DTC stored in control module. Refer to the following table.

Note:

If the applicable permanent DTC includes multiple groups, perform the procedure of Group B first. If the permanent DTC is not erased, perform the procedure of Group A.

×: Applicable —: Not applicable

Group*

Perform “DTC CONFIRMATION PROCEDURE” for applicable DTCs.

Driving pattern

Reference

B

D

A

×

—

—

Work Procedure (Group A)

B

—

×

×

Work Procedure (Group B)

*: For group, refer to “DTC Index” of each control module.

PERMANENT DTC ITEM

For permanent DTC items, MIL turns ON. Refer to “DTC Index” of each control module.

PERMANENT DTC SERVICE PROCEDURE

Work Procedure (Group A)

*1:

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

  1. CHECK DTC

    Check DTC.

    Is any DTC detected?

    YES >>

    Repair malfunction(s) and erase DTC. Refer to “DTC Index” of each control module.

    NO >>

    GO TO 2.

  2. CHECK PERMANENT DTC

    With CONSULT

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select “PERMANENT DTC STATUS” mode with CONSULT.

    With GST

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select Service $0A with GST.

    Is any permanent DTC detected?

    YES >>

    GO TO 3.

    NO >>

    END

  3. PERFORM DTC CONFIRMATION PROCEDURE

    Perform “DTC CONFIRMATION PROCEDURE” for DTCs which are the same as permanent DTCs stored in control module.

    >>

    GO TO 4.

  4. CHECK PERMANENT DTC

    With CONSULT

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select “PERMANENT DTC STATUS” mode with CONSULT.

    With GST

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select Service $0A with GST.

    Is any permanent DTC detected?

    YES >>

    GO TO 1.

    NO >>

    END

Work Procedure (Group B)

*1:

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

*2:

After experiencing driving pattern B and D, permanent DTC is erased.

*3:

Indication does not change unless the ignition switch is turned from ON to OFF twice even after experiencing driving pattern B or D.
Note:

Drive the Nissan Sentra vehicle according to only driving patterns indicating “INCMP” in driving patterns B and D on the “PERMANENT DTC STATUS” screen.

  1. CHECK DTC

    Check DTC.

    Is any DTC detected?

    YES >>

    Repair malfunction(s) and erase DTC.

    NO >>

    GO TO 2.

  2. CHECK PERMANENT DTC

    With CONSULT

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select “PERMANENT DTC STATUS” mode with CONSULT.

    With GST

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select Service $0A with GST.

    Is any permanent DTC detected?

    YES >>

    GO TO 3.

    NO >>

    END

  3. DRIVE DRIVING PATTERN B

    CAUTION:

    • Always drive at a safe speed.

    • Never erase self-diagnosis results.

    • If self-diagnosis results are erased during the trip of driving pattern B or D, the counter of driving pattern B and D is reset.

    With CONSULT

    1. Turn ignition switch ON.

    2. Start engine and warm it up to normal operating temperature.

    3. Use “PERMANENT DTC WORK SUPPORT” mode with CONSULT to drive the Nissan Sentra vehicle according to driving pattern B. Refer to Diagnosis Description.

    With GST

    1. Turn ignition switch ON.

    2. Start engine and warm it up to normal operating temperature.

    3. Drive the Nissan Sentra vehicle according to driving pattern B. Refer to Diagnosis Description.

    >>

    GO TO 4.

  4. CHECK PERMANENT DTC

    With CONSULT

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select “PERMANENT DTC STATUS” mode with CONSULT.

    With GST

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select Service $0A with GST.

    Is any permanent DTC detected?

    YES >>

    GO TO 5.

    NO >>

    END

  5. DRIVE DRIVING PATTERN D

    CAUTION:

    • Always drive at a safe speed.

    • Never erase self-diagnosis results.

    • If self-diagnosis results are erased during the trip of driving pattern B or D, the counter of driving pattern B and D is reset.

    1. Drive the Nissan Sentra vehicle according to driving pattern D. Refer to Diagnosis Description.

    >>

    GO TO 6.

  6. CHECK PERMANENT DTC

    With CONSULT

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select “PERMANENT DTC STATUS” mode with CONSULT.

    With GST

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    4. Turn ignition switch ON.

    5. Select Service $0A with GST.

    Is any permanent DTC detected?

    YES >>

    GO TO 1.

    NO >>

    END

Idle Air Volume Learning

Work Procedure

Work Procedure

Description

Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within the specific range. It must be performed under the following conditions:

Work Procedure

Before Replacing ECM
SAVE ECM DATA With CONSULT Turn ignition switch OFF. Reconnect all harness connectors disconnected. ...

Work Procedure (Before Replacing Electric Throttle Control Actuator)
CHECK DTC Perform DTC P0101 confirmation procedure. Refer to Confirmation Procedure. Is the DTC P0101 displayed? YES >> GO TO 2. NO >> ...

Other materials:

Vacuum Pump
Exploded View Exploded View 1. Vacuum tube 2. Clamp 3. Vacuum hose A ...

The oil pressure warning lamp does not turn on
Description The oil pressure warning lamp stays off when the ignition switch is turned on. Diagnosis procedure 1.Check combination meter oil pressure warning light Select METER/M&A on CONSULT. Observe oil w/l data monitor while operating the ignition switch. Is the inspection r ...

Both side headlamps do not switch to high beam
Description The headlamps (both sides) do not switch to high beam when the lighting switch is in the hi or pass setting. Diagnosis procedure 1.Combination switch (lighting and turn signal switch) inspection Check the combination switch (lighting and turn signal switch). Refer to bcs-72, &q ...

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