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Home >> Subaru >> 2012 >> Impreza WRX STi Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Speed Control Systems (STI) (WRX-STI) >> Accelerator Pedal >> Inspection >> Check Accelerator Pedal Sensor Area (Method With Circuit Tester)

Check Accelerator Pedal Sensor Area (Method With Circuit Tester)

  1. Remove the lower inner trim of passenger's side. < Ref. to REMOVAL , Lower Inner Trim. >
  2. Turn over the floor mat of passenger's seat.
  3. Remove the protect cover.
    Fig 1: Locating Protect Cover
    G07681435Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the nuts and bolts which hold the ECM to the bracket.
    Fig 2: Locating Nuts And Bolts Which Hold ECM To Bracket
    G07681436Courtesy of SUBARU OF AMERICA, INC.
  5. Turn the ignition switch to ON. (engine OFF)
  6. Measure the voltage between ECM connector terminals.
    • Main sensor side
      Fig 3: Measuring Voltage Between ECM Connector Terminals - Main Sensor Side
      G07681437Courtesy of SUBARU OF AMERICA, INC.
    • Sub sensor side
      Fig 4: Measuring Voltage Between ECM Connector Terminals - Sub Sensor Side
      G07681438Courtesy of SUBARU OF AMERICA, INC.
      ACCELERATOR PEDAL SENSOR VOLTAGE SPECIFICATIONS

      Accelerator pedal sensor Accelerator pedal Terminal No. Standard
      Main Not depressed (Full closed) 23 (+) and 29 (-) 0.4 - 1.0 V
      Depressed (Full opened) 2.4 - 3.7 V
      Sub Not depressed (Full closed) 31 (+) and 30 (-) 0.3 - 1.1 V
      Depressed (Full opened) 2.3 - 3.8 V
  7. After inspection, install the related parts in the reverse order of removal.

    Tightening torque: 

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb)