LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2012 >> FX35 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 211 (Engine Control System (VQ35HR) - FX35 - DTC U0101, U0164, U1001, & P0011 Through P0133 / P0153) >> DTC P0122, P0123, P0227, P0228: TP Sensor >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  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 POSITION SENSOR 2 POWER SUPPLY CIRCUIT
    1. Disconnect electric throttle control actuator harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between electric throttle control actuator harness connector and ground.
    TERMINAL VOLTAGE REFERENCE CHART

    DTC Electric throttle control actuator Ground Voltage (V)
    Bank Connector Terminal
    P0122, P0123 1 F6 6 Ground Approx. 5
    P0227, P0228 2 F27 1

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair open circuit, short to ground or short to power in harness or connectors.

  3. CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
      TERMINAL CONTINUITY REFERENCE CHART

      DTC Electric throttle control actuator ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0122, P0123 1 F6 3 F101 40 Existed
      P0227, P0228 2 F27 4 48
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair open circuit, short to ground or short to power in harness or connectors.

  4. CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
      TERMINAL CONTINUITY REFERENCE CHART

      DTC Electric throttle control actuator ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0122, P0123 1 F6 5 F101 34 Existed
      P0227, P0228 2 F27 3 35
    2. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Repair open circuit, short to ground or short to power in harness or connectors.

  5. CHECK THROTTLE POSITION SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO  7.

    NO: GO TO 6.

  6. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

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

    INSPECTION END

  7. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

scientia non olet · About LEMON Manuals