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Home >> Nissan-Datsun >> 2008 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P1148 To P2A03 (Qr25DE) >> DTC P2138 App Sensor >> Component Inspection >> Accelerator Pedal Position Sensor
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Accelerator Pedal Position Sensor

  1. Reconnect all harness connectors disconnected.
  2. Turn ignition switch ON.
  3. Check voltage between ECM terminals 81 (APP sensor 1 signal), 82 (APP sensor 2 signal) and ground under the following conditions.
    TERMINALS VOLTAGE CHART

    Terminal Accelerator pedal Voltage
    81 (Accelerator pedal position sensor 1) Fully released 0.6 - 0.9V
    Fully depressed 3.9 - 4.7V
    82 (Accelerator pedal position sensor 2) Fully released 0.3 - 0.6V
    Fully depressed 1.95 - 2.4V
    Fig 1: Checking Voltage Between ECM Terminals 81 Or 82 And Ground
    G04926200Courtesy of NISSAN MOTOR CO., U.S.A.
  4. If NG, replace accelerator pedal assembly and go to next step.
  5. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
  6. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
  7. Perform "IDLE AIR VOLUME LEARNING ".
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