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Throttle Sensor (Method With Circuit Tester)

NOTE: Individual difference of the accelerator pedal may not be corrected sufficiently on the ECM side after DTCs were cleared or the battery was removed and installed on the vehicle. Therefore, when the reference voltage is not reached after following the procedure, repeat the ignition switch ON (engine OFF) and ignition switch OFF operations 40 times at intervals of three seconds or more, and then measure the voltage again.
  1. Remove the back panel - pocket. Refer to REMOVAL .
  2. Turn the ignition switch to ON. (engine OFF)
  3. Measure the voltage between ECM connector terminals.
    Fig 1: Identifying ECM Harness Connectors
    G08579610Courtesy of SUBARU OF AMERICA, INC.
    Fig 2: Measuring Voltage Between ECM Connector Terminals
    G08579611Courtesy of SUBARU OF AMERICA, INC.
    Throttle sensor Accelerator pedal Terminal No. Standard
    Main Not depressed (Full closed) 18 (+) and 29 (-) Approx. 0.6 V
    Depressed (Full opened) Approx. 4.0 V
    Sub Not depressed (Full closed) 28 (+) and 29 (-) Approx. 1.5 V
    Depressed (Full opened) Approx. 4.2 V
  4. After inspection, install the related parts in the reverse order of removal.
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