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Throttle Sensor (Method With Circuit Tester)

  1. Disconnect the ground cable from battery. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  2. Disconnect the connector from ECM. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>ENGINE CONTROL MODULE (ECM)>REMOVAL .
  3. Attach the ST between the ECM, engine wiring harness and the bulkhead wiring harness. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>GENERAL DESCRIPTION>PREPARATION TOOL>HOW TO USE CHECK BOARD .

    Special tool: 

    CHECK BOARD (18460AA180)

  4. Connect the battery ground terminal. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  5. Turn the ignition switch to ON. (Engine OFF)
  6. Measure the voltage between ECM connector terminals.
    G13223826Courtesy of SUBARU OF AMERICA, INC.
    Throttle sensor Accelerator pedal Terminals No. Standard
    Main Not depressed (full closed) 29 (+) and 30 (-) Approx. 0.6 - 1.2 V
    Depressed (full opened) Approx. 3.8 - 4.4 V
    Sub Not depressed (full closed) 43 (+) and 30 (-) Approx. 1.4 - 2.0 V
    Depressed (full opened) Approx. 4.0 - 4.6 V
  7. After inspection, install the related parts in the reverse order of removal.
NOTE: For installation procedures of ECM connectors, refer to Engine Control Module (ECM). Ref. to INSTALLATION .
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