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Home >> Infiniti >> 2004 >> FX45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0222 & P0223 TP Sensor >> Diagnostic Procedure

Diagnostic Procedure

  1. Check Ground Connections 
    1. Turn ignition switch OFF.
    2. Loosen and retighten three ground screws on the body, See Figure and Refer to GROUND INSPECTION  .

    OK or NG

    1. OK: go to 2.
    2. NG: Repair or replace ground connections.

  2. Check Throttle Position Sensor 1 Power Supply Circuit-I 
    1. Disconnect electric throttle control actuator harness connector. See Figure .
    2. Turn ignition switch ON.
    3. Check voltage between electric throttle control actuator terminal 1 and ground with CONSULT-II or tester.
      Fig 1: Testing Electric Throttle Control Actuator Circuit
      G00344885Courtesy of NISSAN MOTOR CO., U.S.A.
      1. Voltage: Approximately 5V 

    OK or NG

    1. OK: go to  7 .
    2. NG: go to 3.

  3. Check Throttle Position Sensor 1 Power Supply Circuit-II 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between electric throttle control actuator terminal 1 and ECM terminal 47.

      Refer to wiring diagram. See Figure .

      1. Continuity should exist  .

    OK or NG

    1. OK: go to 4.
    2. NG: Repair or replace open circuit.

  4. Check Throttle Position Sensor 1 Power Supply Circuit-III 

    Check harness for short to power and short to ground, between the following terminals. See Fig 2 .

    Fig 2: Identifying Terminals Likely To Have Short To Power Or Ground
    G00344886Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: go to 5.
    2. NG: Repair short to ground or short to power in harness or connectors.

  5. Check APP Sensor 

    Refer to COMPONENT INSPECTION  .

    OK or NG

    1. OK: go to  11 .
    2. NG: go to 6.

  6. Replace Accelerator Pedal Assembly 
    1. Replace accelerator pedal assembly.
    2. Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING  .
    3. Perform THROTTLE VALVE CLOSED POSITION LEARNING  .
    4. Perform IDLE AIR VOLUME LEARNING  .
      1. Inspection end 
  7. Check Throttle Position Sensor 1 Ground Circuit For Open And Short 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between electric throttle control actuator terminal 5 and ECM terminal 66.

      Refer to wiring diagram. See Figure .

      1. Continuity should exist  .
    4. Also check harness for short to ground and short to power.

    OK or NG

    1. OK: go to 8.
    2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

  8. Check Throttle Position Sensor 1 Input Signal Circuit For Open And Short 
    1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 4.

      Refer to wiring diagram. See Figure .

      1. Continuity should exist  .
    2. Also check harness for short to ground and short to power.

    OK or NG

    1. OK: go to 9.
    2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

  9. Check Throttle Position Sensor 

    Refer to COMPONENT INSPECTION  .

    OK or NG

    1. OK: go to  11 .
    2. NG: go to 10.
  10. Replace Electric Throttle Control Actuator 
    1. Replace the electric throttle control actuator.
    2. Perform THROTTLE VALVE CLOSED POSITION LEARNING  .
    3. Perform IDLE AIR VOLUME LEARNING  .
      1. Inspection end 
  11. Check Intermittent Incident 

    Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  .

    1. Inspection end 
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