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Home >> Infiniti >> 2019 >> QX50 Essential, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (3 Of 12) >> DTC/Circuit Diagnosis >> DTC P0122, P0123: TP Sensor >> Component Inspection
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Component Inspection

  1. CHECK THROTTLE POSITION SENSOR 
    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Perform Description .
    4. Turn ignition switch ON.
    5. Set selector lever to D position.
    6. Check the voltage between ECM harness connector terminals under the following conditions.

      ECM

      Condition

      Voltage

      Connector

      +

      -

      Terminal

      F52

      85

      90

      Accelerator pedal

      Fully released

      More than 0.36 V

      Fully depressed

      Less than 4.75 V

      89

      Fully released

      Less than 4.75 V

      Fully depressed

      More than 0.36 V

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace electric throttle control actuator. Refer to Removal and Installation .