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Basic Inspection

  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
        Fig 1: Checking Harness Connectors And Hoses
        G02348188Courtesy of NISSAN MOTOR CO., U.S.A.
    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 the middle of gauge.

      Ensure engine stays below 1,000 RPM.

      Fig 2: Checking Engine Temperature Indicator
      G02348189Courtesy of NISSAN MOTOR CO., U.S.A.
    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-II or GST.

      OK or NG 

      1. OK: GO TO  3.
      2. NG: GO TO 2.
        Fig 3: Checking Engine RPM Meter
        G02348190Courtesy of NISSAN MOTOR CO., U.S.A.
  2. REPAIR OR REPLACE 

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

    1. : GO TO 3.
  3. CHECK TARGET IDLE SPEED 

    With CONSULT-II 

    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.
      Fig 4: Revving Engine (2,000 To 3,000 RPM) Two Or Three Times Under
      G02348191Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Read idle speed in "DATA MONITOR" mode with CONSULT-II. Refer to "IDLE SPEED ".

      A/T: 650 +/- 50 RPM (in P or N position) 

      M/T: 650 +/- 50 RPM (in Neutral position) 

      Fig 5: Read Idle Speed In "DATA MONITOR" Mode With CONSULT-II
      G02348192Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    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. Refer to "IDLE SPEED ".

      A/T: 650 +/- 50 RPM (in P or N position) 

      M/T: 650 +/- 50 RPM (in Neutral position) 

    OK or NG 

    1. OK: GO TO  6.
    2. NG: GO TO 4.
  4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING 
    1. Stop engine.
    2. Perform "Accelerator Pedal Released Position Learning ".
    1. : GO TO 5.
  5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING 

    Perform "Throttle Valve Closed Position Learning ".

    1. : GO TO 6.
  6. PERFORM IDLE AIR VOLUME LEARNING 

    Refer to "Idle Air Volume Learning ".

    Is Idle Air Volume Learning carried out successfully? 

    Yes or No 

    1. Yes: GO TO 7.
    2. No:
      1. Follow the instruction of Idle Air Volume Learning.
      2. GO TO  4.
    3. CHECK TARGET IDLE SPEED AGAIN 

      With CONSULT-II 

      1. Start engine and warm it up to normal operating temperature.
      2. Read idle speed in "DATA MONITOR" mode with CONSULT-II.

        Refer to "IDLE SPEED ".

        A/T: 650 +/- 50 RPM (in P or N position) 

        M/T: 650 +/- 50 RPM (in Neutral position) 

      Without CONSULT-II 

      1. Start engine and warm it up to normal operating temperature.
      2. Check idle speed.

        Refer to "IDLE SPEED ".

        A/T: 650 +/- 50 RPM (in P or N position) 

        M/T: 650 +/- 50 RPM (in Neutral position) 

        Fig 6: Checking Idle Speed
        G02348193Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      1. OK: GO TO  6.
      2. NG: GO TO 8.
    4. DETECT MALFUNCTIONING PART 

      Check the following.

      OK or NG 

      1. OK: GO TO 9.
      2. NG:
        1. Repair or replace.
        2. GO TO  4.
    5. CHECK ECM FUNCTION 
      1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)
      2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to "ECM RE-COMMUNICATING FUNCTION ".
      1. : GO TO  4.
    6. CHECK IGNITION TIMING 
      1. Run engine at idle.
      2. Check ignition timing with a timing light.

        Refer to "IGNITION TIMING ".

        A/T: 15 +/- 5° BTDC (in P or N position) 

        M/T: 15 +/- 5° BTDC (in Neutral position) 

      OK or NG 

      1. OK: GO TO  11.
      2. NG: GO TO 11.
        Fig 7: Checking Ignition Timing With A Timing Light
        G02348194Courtesy of NISSAN MOTOR CO., U.S.A.
    7. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING 
      1. Stop engine.
      2. Perform "Accelerator Pedal Released Position Learning ".
      1. : GO TO 12.
    8. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING 

      Perform "Throttle Valve Closed Position Learning ".

      1. : GO TO 13.
    9. PERFORM IDLE AIR VOLUME LEARNING 

      Refer to "Idle Air Volume Learning ".

      Is Idle Air Volume Learning carried out successfully? 

      Yes or No 

      1. Yes: GO TO 14.
      2. No:
        1. Follow the instruction of Idle Air Volume Learning.
        2. GO TO  4.
    10. CHECK TARGET IDLE SPEED AGAIN 

      With CONSULT-II 

      1. Start engine and warm it up to normal operating temperature.
      2. Read idle speed in "DATA MONITOR" mode with CONSULT-II.

        Refer to "IDLE SPEED ".

        A/T: 650 +/- 50 RPM (in P or N position) 

        M/T: 650 +/- 50 RPM (in Neutral position) 

      Without CONSULT-II 

      1. Start engine and warm it up to normal operating temperature.
      2. Check idle speed. Refer to "IDLE SPEED ".

        A/T: 650 +/- 50 RPM (in P or N position) 

        M/T: 650 +/- 50 RPM (in Neutral position) 

        Fig 8: Reading Idle Speed In "DATA MONITOR" Mode With CONSULT-II
        G02348195Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      1. OK: GO TO 15.
      2. NG: GO TO  9.
  7. CHECK IGNITION TIMING AGAIN 
    1. Run engine at idle.
    2. Check ignition timing with a timing light.

      Refer to "IGNITION TIMING ".

      A/T: 15 +/- 5° BTDC (in P or N position) 

      M/T: 15 +/- 5° BTDC (in Neutral position) 

    OK or NG 

    1. OK: GO TO  11.
    2. NG: GO TO 16.
      Fig 9: Checking Ignition Timing With A Timing Light
      G02348196Courtesy of NISSAN MOTOR CO., U.S.A.
  8. CHECK TIMING CHAIN INSTALLATION 

    Check timing chain installation. Refer to "TIMING CHAIN ".

    OK or NG 

    1. OK: GO TO 17.
    2. NG:
      1. Repair the timing chain installation.
      2. GO TO  4.
  9. DETECT MALFUNCTIONING PART 

    Check the following.

    OK or NG 

    1. OK: GO TO 18.
    2. NG:
      1. Repair or replace.
      2. GO TO  4.
  10. CHECK ECM FUNCTION 
    1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of a incident, but this is a rare case.)
    2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to "ECM RE-COMMUNICATING FUNCTION ".
    1. : GO TO  4.
  11. INSPECTION END 

    Did you replace the ECM, referring this Basic Inspection procedure?

    Yes or No 

    1. Yes:
      1. Perform "VIN Registration ".
      2. INSPECTION END 
    2. No: INSPECTION END 
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