FixVault
Home › Nissan-Datsun › 2011 › Sentra SE-R › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTCS P1148 To P2A03 (Qr25DE) › DTC P2118 Throttle Control Motor › Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTIONS
    1. Turn ignition switch OFF.
    2. Loosen and retighten engine screws on the body.

      Refer to "GROUND INSPECTION ".

      Fig 1: Location Of Washer Tank, Fuse And Fusible Link Box And Body Ground E15
      G07144419Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK: GO TO 2.

      NG: Repair or replace ground connections.

  2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
    1. Disconnect electric throttle control actuator (1) harness connector.
      • : Vehicle front
    2. Disconnect ECM harness connector.
    3. Check harness continuity between the following terminals.

      Refer to WIRING DIAGRAM .

      TERMINAL CONTINUITY REFERENCE CHART

      Electric throttle control actuator terminal ECM terminal Continuity
      5 5 Should not exist.
      6 Should exist.
      6 5 Should exist.
      6 Should not exist.
      Fig 2: Location Of Electric Throttle Control Actuator
      G07144420Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Also check harness for short to ground and short to power.

      OK or NG 

      OK: GO TO 3.

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

  3. CHECK THROTTLE CONTROL MOTOR

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 4.

    NG: GO TO  5.

  4. CHECK INTERMITTENT INCIDENT

    Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

    OK or NG 

    OK: GO TO 5.

    NG: Repair or replace harness or connectors.

  5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

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

    INSPECTION END 

About FixVault