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Home >> Nissan-Datsun >> 2009 >> Versa Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0500 To P2A00 >> DTC P2100, P2103 Throttle Control Motor Relay >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I
    1. Turn ignition switch OFF.
    2. Check voltage between ECM terminal 15 and ground with CONSULT- III or tester.

      Voltage: Battery voltage 

      OK or NG 

      OK : GO TO  5.

      NG : GO TO 2.

      Fig 1: Checking Voltage Between ECM Terminal 15 And Ground
      G04925553Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II
    1. Disconnect ECM harness connector.
    2. Disconnect IPDM E/R harness connector E46.
    3. Check continuity between ECM terminal 15 and IPDM E/R terminal 46.

      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  4.

      NG : GO TO 3.

  3. DETECT MALFUNCTIONING PART

    Check the following.

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

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

  4. CHECK FUSE
    1. Disconnect 15A fuse.
    2. Check 15A fuse for blown.

      OK or NG 

      OK : GO TO  8.

      NG : Replace 15A fuse.

  5. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

    Check voltage between ECM terminal 2 and ground under the following conditions with CONSULT-III or tester.

    VOLTAGE REFERENCE CHART

    Ignition switch Voltage
    OFF Approximately 0V
    ON Battery voltage (11 - 14V)
    Fig 2: Checking Voltage Between ECM Terminal 2 And Ground
    G04925554Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : GO TO  8.

    NG : GO TO 6.

  6. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Disconnect IPDM E/R harness connector E43.
    4. Check continuity between ECM terminal 2 and IPDM E/R terminal 8.

      Refer to Wiring Diagram.

      Continuity should exist  .

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

      OK or NG 

      OK : GO TO  8.

      NG : GO TO 7.

  7. DETECT MALFUNCTIONING PART

    Check the following.

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

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

  8. CHECK INTERMITTENT INCIDENT

    Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

    OK or NG 

    OK : Replace IPDM E/R. Refer to REMOVAL AND INSTALLATION OF IPDM E/R .

    NG : Repair or replace harness or connectors.

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