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Home >> Nissan-Datsun >> 2008 >> Rogue SL, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Introduction (CALIFORNIA) >> Component Diagnosis [For CALIFORNIA] >> Power Supply And Ground Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. INSPECTION START

    Start engine.

    Is engine running?

    YES: GO TO  8.

    NO: GO TO 2.

  2. CHECK ECM POWER SUPPLY CIRCUIT-I
    1. Turn ignition switch OFF and then ON.
    2. Check the voltage between ECM harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      ECM Ground Voltage
      Connector Terminal
      E16 93 Ground Battery voltage

    Is the inspection result normal?

    YES: GO TO  4.

    NO: GO TO 3.

  3. DETECT MALFUNCTIONING PART

    Check the following.

    • IPDM E/R harness connector E14
    • 15A fuse (No. 64)
    • Harness for open or short between ECM and fuse

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

  4. CHECK GROUND CONNECTION-I
    1. Turn ignition switch OFF.
    2. Check ground connection E21. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

    Is the inspection result normal?

    YES: GO TO 5.

    NO: Repair or replace ground connection.

  5. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
    1. Disconnect ECM harness connectors.
    2. Check the continuity between ECM harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      ECM Ground Continuity
      Connector Terminal
      F7 12 Ground Existed
      16
      E16 107
      108
      111
      112
    3. Also check harness for short to power.

    Is the inspection result normal?

    YES: GO TO  7.

    NO: GO TO 6.

  6. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F121, E7
    • Harness for open or short between ECM and ground

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

  7. CHECK ECM POWER SUPPLY CIRCUIT-II
    1. Reconnect ECM harness connectors.
    2. Turn ignition switch ON.
    3. Check the voltage between IPDM E/R harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      IPDM E/R Ground Voltage
      Connector Terminal
      E15 47 Ground Battery voltage

    Is the inspection result normal?

    YES: GO TO "DIAGNOSIS PROCEDURE ".

    NO: GO TO 8.

  8. CHECK ECM POWER SUPPLY CIRCUIT-III
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Check the voltage between ECM harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      ECM Ground Voltage
      Connector Terminal
      E16 105 Ground After turning ignition switch OFF, battery voltage will exist for a few seconds, then drop approximately 0 V.

    Is the inspection result normal?

    YES: GO TO  14.

    NO-1: Battery voltage does not exist: GO TO 9.

    NO-2: Battery voltage exists for more than a few seconds: GO TO  11.

  9. CHECK ECM POWER SUPPLY CIRCUIT-IV
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Check the voltage between ECM harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      ECM Ground Voltage
      Connector Terminal
      F7 24 Ground Battery voltage

    Is the inspection result normal?

    YES: GO TO 10.

    NO: GO TO  11.

  10. CHECK ECM POWER SUPPLY CIRCUIT-V
    1. Disconnect ECM harness connector.
    2. Disconnect IPDM E/R harness connector E15.
    3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
      TERMINALS CONTINUITY REFERENCE

      ECM IPDM E/R Continuity
      Connector Terminal Connector Terminal
      E16 105 E15 48 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES: GO TO  17.

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

  11. CHECK ECM POWER SUPPLY CIRCUIT-VI
    1. Disconnect ECM harness connector.
    2. Disconnect IPDM E/R harness connector E15.
    3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
      TERMINALS CONTINUITY REFERENCE

      ECM IPDM E/R Continuity
      Connector Terminal Connector Terminal
      F7 24 E15 51 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES: GO TO  13.

    NO: GO TO 12.

  12. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness or connectors F121, E7
    • Harness for open or short between ECM and IPDM E/R

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

  13. CHECK 20A FUSE
    1. Disconnect 20A fuse (No. 62) from IPDM E/R.
    2. Check 20A fuse.

    Is the inspection result normal?

    YES: GO TO  17.

    NO: Replace 20A fuse.

  14. CHECK GROUND CONNECTION-II
    1. Turn ignition switch OFF.
    2. Check ground connection E21. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

    Is the inspection result normal?

    YES: GO TO 15.

    NO: Repair or replace ground connection.

  15. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II
    1. Disconnect ECM harness connector.
    2. Check the continuity between ECM harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      ECM Ground Continuity
      Connector Terminal
      F7 12 Ground Existed
      16
      E16 107
      108
      111
      112
    3. Also check harness for short to power.

    Is the inspection result normal?

    YES: GO TO  17.

    NO: GO TO 16.

  16. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness or connectors F121, E7
    • Harness for open or short between ECM and ground

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

  17. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal?

    YES: Replace IPDM E/R.

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

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