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Home >> Infiniti >> 2017 >> Q60 Sport, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Basic Inspection) (VR30DDTT) >> Basic Inspection >> How To Set SRT Code >> Work Procedure >> Diagnostic Test
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Diagnostic Test

  1. CHECK DTC

    Check DTC.

    Is any DTC detected?

    YES 

    Repair malfunction(s) and erase DTC. Refer to DTC INDEX  (For turbo high pressure model) or DTC INDEX  (For turbo low pressure model).

    NO 

    GO TO STEP 2  .

  2. CHECK SRT STATUS

    G-20With CONSULT 

    On CONSULT screen, select "SRT & P-DTC">>"SRT Status".

    G-21Without CONSULT 

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

    NSM020With GST 

    Select Service $01 with GST.

    Is SRT code(s) set?

    YES 

    GO TO STEP   12  .

    NO-1 

    With CONSULT: GO TO STEP 3  .

    NO-2 

    Without CONSULT: GO TO STEP 4  .

  3. DTC CONFIRMATION PROCEDURE

    G-20With CONSULT 

    1. On CONSULT screen, select "SRT & P-DTC">>"SRT Status".
    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  (For turbo high pressure model) or DTC INDEX  (For turbo low pressure model).

    NO 

    GO TO STEP   11  .

  4. PERFORM ROAD TEST

    G-21Without CONSULT 

    • 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 STEP 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  (For turbo high pressure model) or REFERENCE VALUE  (For turbo low pressure model).

    GO TO STEP 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 STEP 7  .

  7. PATTERN 3

    • Operate vehicle following the driving pattern shown in the figure, below.
      G04073676Courtesy of NISSAN NORTH AMERICA, INC.
    • Release the accelerator pedal during deceleration of vehicle speed from 90 km/h (56 MPH) to 0 km/h (0 MPH).

    GO TO STEP 8  .

  8. PATTERN 4

    • Operate vehicle following the driving pattern shown in the figure, below.
      G06536222Courtesy of NISSAN NORTH AMERICA, INC.
      1. Drive the vehicle in a proper gear at 60 km/h (38 MPH) and maintain the speed.
      2. Release the accelerator pedal fully at least 5 seconds.
      3. Repeat the above two steps at least 5 times.

    GO TO STEP 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 STEP 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 STEP 11  .

  11. CHECK SRT STATUS

    G-20With CONSULT 

    On CONSULT screen, select "SRT & P-DTC">>"SRT Status".

    G-21Without CONSULT 

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

    NSM020With GST 

    Select Service $01 with GST.

    Is SRT(s) set?

    YES 

    GO TO STEP 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.

    G-20With CONSULT 

    On CONSULT screen, select "SRT & P-DTC">>"Permanent DTC Status".

    NSM020With GST 

    Select Service $0A with GST.

    Is permanent DTC(s) detected?

    YES 

    Go to DESCRIPTION .

    NO 

    END