Throttle Position Sensor: Adjustment

Turn ignition switch to OFF.
Loosen throttle position sensor holding screws.

Fig 1: Loosening Throttle Position Sensor Holding Screws
Courtesy of SUBARU OF AMERICA, INC.
When using voltage meter;
1. Take out ECM.
2. Turn ignition switch to ON.
3. Adjust throttle position sensor to the proper position to allow the voltage signal to ECM to be in specification.
  Connector & terminal/Specified voltage
  1. (B136) No. 15-(B136) No. 17/0.45-0.55 V
  2. [Fully closed]
  Fig 2: Checking Voltage Between Throttle Position Sensor Terminals (B136) No. 15 And (B136) No. 17
  Courtesy of SUBARU OF AMERICA, INC.
4. Tighten 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 ignition switch to OFF.
2. Loosen 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 Subaru Select Monitor Operation Manual.
3. Insert the cartridge to Subaru Select Monitor.
  
  Fig 5: Inserting Cartridge To Subaru Select Monitor
  Courtesy of SUBARU OF AMERICA, INC.
4. Connect Subaru Select Monitor to the data link connector.
  
  Fig 6: Locating Data Link Connector
  Courtesy of SUBARU OF AMERICA, INC.
Turn ignition switch to ON, and Subaru Select Monitor switch to ON.
Select {2. Each System Check} in Main Menu.
Select {Engine Control System} in Selection Menu.
Select {1. Current Data Display & Save} in Engine Control System Diagnosis.
Select {1.12 Data Display} in Data Display Menu.
Adjust 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
Tighten 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.