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Home >> Infiniti >> 2013 >> M56 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1087 To P2542 >> DTC P1236, P2118: Throttle Control Motor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Disconnect electric throttle control actuator harness connector.
    2. Disconnect ECM harness connector.
    3. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
      DTC Electric throttle control actuator ECM Continuity
      Bank Connector Terminal Connector Terminal
      P1233 2 F64 5 F111 62 Not existed
      58 Existed
      6 62 Existed
      58 Not existed
      P2101 1 F66 5 F111 57 Not existed
      63 Existed
      6 57 Existed
      63 Not existed
    4. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace malfunctioning part.

  2. CHECK THROTTLE CONTROL MOTOR 

    Refer to "COMPONENT INSPECTION (ELECTRIC THROTTLE CONTROL MOTOR) ".

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: GO TO  4.

  3. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair or replace harness or connectors.

  4. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 

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

    : INSPECTION END

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