Throttle Position Sensor: Adjustment

1. Take out the ECM.
2. Turn the ignition switch to ON.
3. Adjust the throttle position sensor to the proper position to allow the voltage signal to the ECM to be in specification.

   Connector & terminal / Specified voltage 

   1. (B134) No. 3 (+) - (B134) No. 13 (-) / 0.45 - 0.55 V 
   2. [Fully closed.] 
   Fig 2: Checking Connector Terminal Voltage

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4. Tighten the throttle position sensor holding screws.

   Tightening torque: 

   1. 1.6 N.m (0.16 kgf-m, 1.2 ft-lb) 

Fig 3: Locating Screws For Tightening Throttle Position Sensor

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1. Turn the ignition switch to OFF.
2. Loosen the throttle position sensor holding screws.
   Fig 4: Locating Screws For Loosening Throttle Position Sensor

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   NOTE: For detailed operation procedures, refer to the Subaru Select Monitor Operation Manual.
3. Insert the cartridge to the Subaru Select Monitor.
   Fig 5: Inserting Cartridge To Subaru Select Monitor

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4. Connect the Subaru Select Monitor to the data link connector.
   Fig 6: Connecting Subaru Select Monitor To Data Link Connector

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5. Turn the ignition switch to ON, and the Subaru Select Monitor switch to ON.
6. Select the {2. Each System Check} in Main Menu.
7. Select the {Engine Control System} in Selection Menu.
8. Select the {1. Current Data Display & Save} in Engine Control System Diagnosis.
9. Select the {1.12 Data Display} in Data Display Menu.
10. Adjust the throttle position sensor to the proper position to match with the following specifications.

    Condition: Throttle fully closed 

    1. Throttle opening angle 0.00% 
    2. Throttle sensor voltage 0.50 V 
11. Tighten the throttle position sensor holding screws.

Tightening torque: 

1. 1.6 N.m (0.16 kgf-m, 1.2 ft-lb) 

Fig 7: Locating Screws For Tightening Throttle Position Sensor

Courtesy of SUBARU OF AMERICA, INC.