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Home >> Nissan-Datsun >> 2011 >> Rogue S, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0643 To P2A00 - For CALIFORNIA >> DTC P2101: Electric Throttle Control Function >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    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 2.

    NO: Repair or replace ground connection.

  2. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
    1. Check the voltage between ECM harness connector and ground.
    VOLTAGE REFERENCE CHART

    ECM Ground Condition Voltage
    Connector Terminal
    F7 2 Ground Ignition switch OFF Approx. 0 V
    Ignition switch ON Battery voltage

    Is the inspection result normal? 

    YES: Go to  9.

    NO: Go to 3.

  3. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
    1. Disconnect ECM harness connector.
    2. Disconnect IPDM E/R harness connector.
    3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
      CONTINUITY REFERENCE CHART

      IPDM E/R ECM Continuity
      Connector Terminal Connector Terminal
      E13 32 F7 15 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: Go to  5.

    NO: Go to 4.

  4. DETECT MALFUNCTION PART

    Check the following.

    • Harness connectors E7, F121
    • 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.

  5. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
    1. Check the continuity between ECM harness connector and IPDM E/R harness connector.
      CONTINUITY REFERENCE CHART

      IPDM E/R ECM Continuity
      Connector Terminal Connector Terminal
      E15 52 F7 2 Existed
    2. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: Go to  7.

    NO: Go to 6.

  6. DETECT MALFUNCTION PART

    Check the following.

    • Harness connectors E7, F121
    • 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.

  7. CHECK FUSE
    1. Disconnect 15 A fuse (No. 61) from IPDM E/R. For the fuse number, refer to "WIRING DIAGRAM - ENGINE CONTROL SYSTEM - ". For the fuse arrangement, refer to " FUSE, CONNECTOR AND TERMINAL ARRANGEMENT ".
    2. Check it 15 A fuse is blown.

    Is the inspection result normal? 

    YES: Go to 8.

    NO: Replace 15 A fuse.

  8. 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.

  9. 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.
      CONTINUITY REFERENCE CHART

      Electric throttle control actuator ECM Continuity
      Connector Terminal Connector Terminal
      F29 5 F7 5 Not existed
      6 Existed
      6 5 Existed
      6 Not existed
    5. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: Go to 10.

    NO: Repair or replace.

  10. 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 (1) and the housing.
      • : Vehicle front
      • Electric throttle control actuator (2)

    Is the inspection result normal? 

    YES: Go to 11.

    NO: Remove the foreign matter and clean the electric throttle control actuator inside.

    Fig 1: View Of Throttle Valve And Electric Throttle Control Actuator Component Locations
    G04886916Courtesy of NISSAN MOTOR CO., U.S.A.
  11. CHECK THROTTLE CONTROL MOTOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: Go to 12.

    NO: Go to  13.

  12. CHECK INTERMITTENT INCIDENT

    Refer to " INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: Go to 13.

    NO: Repair or replace harness or connectors.

  13. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

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

    INSPECTION END

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