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Home >> Nissan-Datsun >> 2014 >> Versa Note S Plus >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P2101: Electric Throttle Control Function >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTION 
    1. Turn ignition switch OFF.
    2. Check ground connection E15. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

  2. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT 
    1. Turn ignition switch ON.
    2. Check the voltage between ECM harness connector and ground.
      ECM Condition Voltage
      + -
      Connector Terminal Connector Terminal
      F10 2 E16 108 Ignition switch OFF Approx. 0 V
      Ignition switch ON Battery voltage

      Is the inspection result normal? 

      YES: GO TO  11.

      NO: GO TO 3.

  3. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I 
    1. Turn ignition switch OFF.
    2. Check voltage between ECM harness connector and ground.
      ECM Voltage
      + -
      Connector Terminal Connector Terminal
      F10 15 E16 108 Battery voltage

      Is the inspection result normal? 

      YES: GO TO  7.

      NO: GO TO 4.

  4. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II 
    1. Disconnect ECM harness connector.
    2. Disconnect IPDM E/R harness connector F42.
    3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
      IPDM E/R ECM Continuity
      Connector Terminal Connector Terminal
      F42 32 F10 15 Existed
    4. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO  6.

      NO: GO TO 5.

  5. DETECT MALFUNCTIONING PART 

    Check the following.

    • IPDM E/R connector F42
    • Harness for open or short between IPDM E/R and ECM

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

  6. CHECK FUSE 
    1. Disconnect 20 A fuse (No. 53) from IPDM E/R.
    2. Check 20 A fuse for blown.

      Is the inspection result normal? 

      YES: GO TO  10.

      NO: Replace 20 A fuse.

  7. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-III 
    1. Disconnect ECM harness connector.
    2. Disconnect IPDM E/R harness connector F42.
    3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
      IPDM E/R ECM Continuity
      Connector Terminal Connector Terminal
      F42 29 F10 2 Existed
    4. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO  10.

      NO: GO TO 8.

  8. DETECT MALFUNCTIONING PART 

    Check the following.

    • IPDM E/R connector F42
    • Harness for open or short between IPDM E/R and ECM

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

  9. CHECK FUSE 
    1. Disconnect 15 A fuse (No. 52) from IPDM E/R.
    2. Check 15 A fuse for blown.

      Is the inspection result normal? 

      YES: GO TO 10.

      NO: Replace 15 A fuse.

  10. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair or replace harness or connectors.

  11. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect electric throttle control actuator harness connector.
    3. Disconnect ECM harness connector.
    4. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
      Electric throttle control actuator ECM Continuity
      Connector Terminal Connector Terminal
      F7 5 F10 1 Not existed
      4 Existed
      F7 6 F10 1 Existed
      4 Not existed
    5. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 12.

      NO: Repair or replace harness or connectors.

  12. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY 
    1. Remove the intake air duct. Refer to "REMOVAL AND INSTALLATION "
    2. Check if foreign matter is caught between the throttle valve and the housing.

      Is the inspection result normal? 

      YES: GO TO 13.

      NO: Remove the foreign matter and clean the electric throttle control actuator inside, and then perform throttle valve closed position learning. Refer to "WORK PROCEDURE ".

      Fig 1: Checking Throttle Valve And Housing
      G09016817Courtesy of NISSAN NORTH AMERICA, INC.
  13. CHECK THROTTLE CONTROL MOTOR 

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 14.

    NO: GO TO  1.

  14. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: GO TO 15.

    NO: Repair or replace harness or connectors.

  15. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 

    Replace malfunction electric throttle control actuator. Refer to "REMOVAL AND INSTALLATION ".

    : INSPECTION END

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