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Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Nissan Versa. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK ENGINE START 

    Turn ignition switch OFF, and restart engine.

    Is engine running? 

    Yes or No 

    Yes (With CONSULT-II) >> GO TO 2.

    Yes (Without CONSULT-II) >> GO TO  3.

    No >> GO TO  4.

  2. CHECK OVERALL FUNCTION 

    With CONSULT-II 

    1. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II.
    2. Make sure that each circuit produces a momentary engine speed drop.

    OK or NG 

    OK >> INSPECTION END 

    NG >> GO TO  10.

    Fig 1: CONSULT-II Display - ACTIVE TEST
    G04812025Courtesy of NISSAN NORTH AMERICA, INC.
  3. CHECK OVERALL FUNCTION 

    Without CONSULT-II 

    1. Let engine idle.
    2. Read the voltage signal between ECM terminals 17, 18, 21, 22 and ground with an oscilloscope.
    3. Verify that the oscilloscope screen shows the signal wave as shown below.
      NOTE: The pulse cycle changes depending on RPM at idle.
      Fig 2: Checking Voltage Signal Between ECM Terminals 17, 18, 21, 22 And Ground
      G04811998Courtesy of NISSAN NORTH AMERICA, INC.
      Fig 3: Signal Waveform Graph
      G04812622Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK >> INSPECTION END 

    NG >> GO TO  10.

  4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I 
    1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
    2. Check voltage between ECM terminal 105 and ground with CONSULT-II or tester.

      Voltage: Battery voltage 

    OK or NG 

    OK >> GO TO 5.

    NG >> Go to "POWER SUPPLY AND GROUND CIRCUIT ".

    Fig 4: Checking Voltage Between ECM Terminal 105 And Ground
    G04812623Courtesy of NISSAN NORTH AMERICA, INC.
  5. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II 
    1. Turn ignition switch OFF.
    2. Disconnect condenser-2 (1) harness connector.
    3. Turn ignition switch ON.
      Fig 5: Identifying Condenser-2 Harness Connector
      G04812624Courtesy of NISSAN NORTH AMERICA, INC.
    4. Check voltage between condenser-2 terminal 1 and ground with CONSULT-II or tester.

      Voltage: Battery voltage 

    OK or NG 

    OK >> GO TO  8.

    NG >> GO TO 6.

    Fig 6: Checking Voltage Between Condenser-2 Terminal 1 And Ground
    G04812625Courtesy of NISSAN NORTH AMERICA, INC.
  6. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R harness connector E43.
    3. Check harness continuity between IPDM E/R terminal 3 and condenser-2 terminal 1.

      Refer to WIRING DIAGRAM .

      Continuity should exist. 

    4. Also check harness for short to ground and short to power.

    OK or NG 

    OK >> Go to "POWER SUPPLY AND GROUND CIRCUIT ".

    NG >> GO TO 7.

  7. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E8, F8
    • Harness for open or short between IPDM E/R and condenser-2

      >> Repair open circuit or short to ground or short to power in harness or connectors.

  8. CHECK CONDENSER-2 GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Check harness continuity between condenser-2 terminal 2 and ground.

      Refer to WIRING DIAGRAM .

      Continuity should exist. 

    3. Also check harness for short to power.

    OK or NG 

    OK >> GO TO 9.

    NG >> Repair open circuit or short to power in harness or connectors.

  9. CHECK CONDENSER-2 

    Refer to "COMPONENT INSPECTION "

    OK or NG 

    OK >> GO TO 10.

    NG >> Replace condenser-2.

  10. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV 
    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Disconnect ignition coil (1) harness connector.
    4. Turn ignition switch ON.
      Fig 7: Identifying Ignition Coil Connectors
      G04812615Courtesy of NISSAN NORTH AMERICA, INC.
    5. Check voltage between ignition coil terminal 3 and ground with CONSULT-II or tester.

      Voltage: Battery voltage 

    OK or NG 

    OK >> GO TO  12.

    NG >> GO TO 11.

    Fig 8: Checking Voltage Between Connector Terminal 3 And Ground
    G04812383Courtesy of NISSAN NORTH AMERICA, INC.
  11. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connector F8
    • Harness for open or short between ignition coil and harness connector F8

      >> Repair or replace harness or connectors.

  12. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Check harness continuity between ignition coil terminal 2 and ground.

      Refer to WIRING DIAGRAM .

      Continuity should exist. 

    3. Also check harness for short to power.

    OK or NG 

    OK >> GO TO 13.

    NG >> Repair open circuit or short to power in harness or connectors.

  13. CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Disconnect ECM harness connector.
    2. Check harness continuity between ECM terminals 17, 18, 21, 22 and ignition coil terminal 1.

      Refer to WIRING DIAGRAM .

      Continuity should exist. 

    3. Also check harness for short to ground and short to power.

    OK or NG 

    OK >> GO TO 14.

    NG >> Repair open circuit or short to ground or short to power in harness or connectors.

  14. CHECK IGNITION COIL WITH POWER TRANSISTOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK >> GO TO 15.

    NG >> Replace ignition coil with power transistor.

  15. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    >> INSPECTION END 

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