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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (DTC/Circuit Diagnosis) (3 Of 4) >> DTC/Circuit Diagnosis >> P2122, P2123 App Sensor >> Component Inspection

Component Inspection

  1. CHECK ACCELERATOR PEDAL POSITION SENSOR 
    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Turn ignition switch ON.
    4. Check the voltage between ECM harness connector terminals as per the following condition.
      ECM Condition Voltage(Approx.)
      Connector + -
      Terminal
      E16 160 161 Accelerator pedal Fully released 0.6 - 0.9 V
      Fully depressed 3.9 - 4.7 V
      153 154 Fully released 0.3 - 0.6 V
      Fully depressed 1.95 - 2.4 V

    Is the inspection result normal?

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    INSPECTION END

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    Replace accelerator pedal assembly. Refer to Removal and Installation .