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Home >> Infiniti >> 2018 >> QX60 FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 6) >> DTC/Circuit Diagnosis >> DTC P0123: TP Sensor >> Component Inspection (Throttle Position Sensor)
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Component Inspection (Throttle Position Sensor)

  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

      F78

      43 (TP Sensor 1)

      44

      Accelerator pedal

      Fully released

      More than 0.36 V

      Fully depressed

      Less than 4.75 V

      48 (TP Sensor 2)

      Fully released

      Less than 4.75 V

      Fully depressed

      More than 0.36 V

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    GO TO 2.

  2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 
    1. Replace malfunctioning electric throttle control actuator.
    2. Proceed to Description .

    INSPECTION END