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Basic Inspection

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  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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