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Home >> Nissan-Datsun >> 2009 >> Cube Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing And Removal And Installation >> Ignition Signal >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
    1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
    2. Check the voltage between ECM harness connector and ground.
    TERMINAL VOLTAGE REFERENCE CHART

    ECM Ground Voltage
    Connector Terminal
    E16 105 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Go to "DIAGNOSIS PROCEDURE ".

  2. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
    1. Turn ignition switch OFF.
    2. Disconnect Condenser harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between condenser harness connector and ground.
    TERMINAL VOLTAGE REFERENCE CHART

    Condenser Ground Voltage
    Connector Terminal
    F13 1 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  5.

    NO: GO TO 3.

  3. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R harness connector E43.
    3. Check the continuity between IPDM E/R harness connector and condenser harness connector.
      TERMINAL CONTINUITY REFERENCE CHART

      IPDM E/R Condenser Continuity
      Connector Terminal Connector Terminal
      E14 44 F26 1 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: Go to "DIAGNOSIS PROCEDURE ".

    NO: GO TO 4.

  4. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E8, F1
    • IPDM E/R harness connector E43
    • Harness for open or short between IPDM E/R and condenser

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

  5. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Check the continuity between Condenser harness connector and ground.
      TERMINAL CONTINUITY REFERENCE CHART

      Condenser Ground Continuity
      Connector Terminal
      E13 2 Ground Existed
    3. Also check harness for short to power.

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  6. CHECK CONDENSER

    Refer to "COMPONENT INSPECTION (CONDENSER) ".

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Replace condenser.

  7. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
    1. Reconnect all harness connectors disconnected.
    2. Disconnect ignition coil harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between ignition coil harness connector and ground.
    TERMINAL VOLTAGE REFERENCE CHART

    Ignition coil Ground Voltage
    Cylinder Connector Terminal
    1 F33 3 Ground Battery voltage
    2 F34 3
    3 F35 3
    4 F36 3

    Is the inspection result normal? 

    YES: GO TO 8.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  8. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Check the continuity between ignition coil harness connector and ground.
      TERMINAL CONTINUITY REFERENCE CHART

      Ignition coil Ground Continuity
      Cylinder Connector Terminal
      1 F33 2 Ground Existed
      2 F34 2
      3 F35 2
      4 F36 2
    3. Also check harness for short to power.

    Is the inspection result normal? 

    YES: GO TO 9.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  9. CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Disconnect ECM harness connector.
    2. Check the continuity between ECM harness connector and ignition coil harness connector.
      TERMINAL CONTINUITY REFERENCE CHART

      Ignition coil ECM Continuity
      Cylinder Connector Terminal Connector Terminal
      1 F33 1 F7 17 Existed
      2 F34 1 18
      3 F35 1 22
      4 F36 1 21
    3. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 10.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  10. CHECK IGNITION COIL WITH POWER TRANSISTOR

    Refer to "COMPONENT INSPECTION (IGNITION COIL WITH POWER TRANSISTOR) ".

    Is the inspection result normal? 

    YES: GO TO 11.

    NO: Replace malfunctioning ignition coil with power transistor.

  11. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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