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Throttle Sensor (Method With Circuit Tester)

  1. Disconnect the ground terminal from battery sensor. Ref. to NOTE>BATTERY .
  2. Remove the Engine Control Module (ECM). Ref. to FUEL INJECTION (FUEL SYSTEMS) (EXCEPT FOR STI)>Engine Control Module (ECM)>REMOVAL .
  3. Install the ST between the ECM and bulkhead harness and the engine wiring harness. Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>General Description>CAUTION .

    ST 18460AA030

    CHECK BOARD

  4. Connect the ground terminal to battery sensor. Ref. to NOTE>BATTERY .
  5. After warming-up the engine, turn the ignition switch to OFF.
  6. Turn the ignition switch to ON. (Engine OFF)
  7. Measure the voltage between ECM connector terminals using ST.
    G12444049
    THROTTLE SENSOR ACCELERATOR PEDAL TERMINAL NO. STANDARD
    Main Not depressed (full closed) 17 (+) and 30 (-) Approx. 0.7 V
    Depressed (full opened) Approx. 3.9 V
    Sub Not depressed (full closed) 29 (+) and 30 (-) Approx. 4.4 V
    Depressed (full opened) Approx. 1.1 V
  8. After inspection, install the related parts in the reverse order of removal.
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