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. (B135) No. 13 - (B135) No. 19/0.45 - 0.55V [Fully closed.]
  Fig 2: Checking Voltage Between Terminals
  Courtesy of SUBARU OF AMERICA, INC.
4. Tighten throttle position sensor holding screws.
  1. Tightening torque: 2.4 N.m (0.24 kgf-m, 1.7 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.
3. Insert the cartridge to Subaru Select Monitor.
  < Ref. to PREPARATION TOOL , General Description.>
4. Connect Subaru Select Monitor to the data link connector (A).
  
  Fig 5: Connecting Subaru Select Monitor To 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.
1. Tightening torque: 2.4 N.m (0.24 kgf-m, 1.7 ft-lb)
Fig 6: Tightening Throttle Position Sensor Holding Screws
Courtesy of SUBARU OF AMERICA, INC.