LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - Introduction >> Basic Inspection >> How To Set SRT Code >> Work Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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" mode with CONSULT.

    WITHOUT CONSULT

    Perform "SRT status" mode with "ON BOARD DIAGNOSIS FUNCTION ".

    WITH GST

    Select Service $01 with GST.

    Is SRT code(s) set? 

    YES: GO TO  12.

    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" mode with 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  11.

  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 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
      • Fuel tank temperature: Less than 4.1 V

      Refer to "REFERENCE VALUE ".

      : GO TO 6.

  6. PATTERN 2 
    1. Drive the 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 vehicle speed is 90 km/h (56 MPH) again
      NOTE:
      • Checking the 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 vehicle following the driving pattern shown in the figure below.
    • Release the accelerator pedal during deceleration of vehicle speed from 90 km/h (56 MPH) to 0 km/h (0 MPH).

      : GO TO 8.

      Fig 1: Identifying Vehicle Driving Pattern 3
      G08649182Courtesy of NISSAN NORTH AMERICA, INC.
  8. PATTERN 4 
    • Operate vehicle following the driving pattern shown in the figure below.
      • Drive the 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.

        Fig 2: Identifying Vehicle Driving Pattern 4
        G08649183Courtesy of NISSAN NORTH AMERICA, INC.
  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. PATTERN 6 

    Start engine and wait at least 2 hours. Then turn ignition switch OFF and wait at least 90 minutes.

    : GO TO 11.

  11. CHECK SRT STATUS 

    WITH CONSULT

    Select "SRT STATUS" in "DTC & SRT CONFIRMATION" mode with CONSULT.

    WITHOUT CONSULT

    Perform "SRT status" mode with "ON BOARD DIAGNOSIS FUNCTION ".

    WITH GST

    Select Service $01 with GST.

    Is SRT(s) set? 

    YES: GO TO 12.

    NO: Call TECH LINE or take appropriate action.

  12. CHECK PERMANENT DTC 
    NOTE: Permanent DTC cannot be checked with a tool other than CONSULT or GST.

    WITH CONSULT

    Select "SRT STATUS" in "DTC & SRT CONFIRMATION" mode with CONSULT.

    WITH GST

    Select Service $0A with GST.

    Is permanent DTC(s) detected? 

    YES: Go to "DESCRIPTION ".

    NO: END