Throttle Position Sensor: Adjustment

When using voltage meter:
1. Turn the ignition switch to OFF.
2. Loosen the throttle position sensor holding screws.
  
  Fig 1: Loosening Throttle Position Sensor Holding Screws
  Courtesy of SUBARU OF AMERICA, INC.
3. Turn the ignition switch to ON.
4. 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 (B135) No. 3 (+) - No. 13 (-) / 0.45 - 0.55 V [Fully closed.]
  
  Fig 2: Identifying Connector & Terminal
  Courtesy of SUBARU OF AMERICA, INC.
5. Tighten the throttle position sensor holding screws.
  Tightening torque: 1.6 N.m (0.16 kgf-m, 1.2 ft-lb)
  
  Fig 3: Tightening Throttle Position Sensor Holding Screws
  Courtesy of SUBARU OF AMERICA, INC.
When using SUBARU Select Monitor:
1. Turn the ignition switch to OFF.
2. Loosen the throttle position sensor holding screws.
  
  Fig 4: Loosening Throttle Position Sensor Holding Screws
  Courtesy of SUBARU OF AMERICA, INC.
  
  NOTE: For detailed operation procedures, refer to the OEM - GENERAL INFORMATION .
3. Insert the cartridge to the SUBARU Select Monitor.
  
  Fig 5: Inserting Cartridge To Subaru Select Monitor
  Courtesy of SUBARU OF AMERICA, INC.
4. Connect the SUBARU Select Monitor to the data link connector.
  
  Fig 6: Connecting Subaru Select Monitor To Data Link Connector
  Courtesy of SUBARU OF AMERICA, INC.
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
  
  Throttle opening angle 0.00%
  
  Throttle sensor voltage 0.50 V
11. Tighten the throttle position sensor holding screws.
  Tightening torque: 1.6 N.m (0.16 kgf-m, 1.2 ft-lb)
  
  Fig 7: Tightening Throttle Position Sensor Holding Screws
  Courtesy of SUBARU OF AMERICA, INC.