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Home >> Infiniti >> 2008 >> EX35 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P1217 To P2A03 >> P1236, P2118 Throttle Control Motor >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection M95. 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 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.
      CONTINUITY SPECIFICATIONS

      DTC Electric throttle control actuator ECM Continuity
      Bank Connector Terminal Connector Terminal
      P1236 2 F27 5 F102 49 Existed
      50 Not existed
      6 49 Not existed
      50 Existed
      P2118 1 F6 1 F101 2 Existed
      4 Not existed
      2 2 Not existed
      4 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair or replace malfunctioning part.

  3. CHECK THROTTLE CONTROL MOTOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: GO TO  5.

  4. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Repair or replace harness or connectors.

  5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
    1. Replace malfunctioning electric throttle control actuator.
    2. Go to "SPECIAL REPAIR REQUIREMENT ".

    INSPECTION END