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.

Warm up the engine.
Remove the glove box lid assembly. Refer to GLOVE BOX .
Turn the ignition switch to ON. (engine OFF)

Measure the voltage between ECM connector terminals.

Fig 1: Locating Glove Box Lid Assembly

Courtesy of SUBARU OF AMERICA, INC.

Fig 2: Measuring Voltage Between ECM Connector Terminals

Courtesy of SUBARU OF AMERICA, INC.

Throttle sensor	Accelerator pedal	Terminal No.	Standard
Main	Not depressed	18 (+) and 29 (-)	Approx. 0.9 V
Sub	Not depressed	28 (+) and 29 (-)	Approx. 1.7 V

Start the engine.
Measure the voltage between ECM connector terminals when accelerator pedal is fully open.
CAUTION: When depressing the accelerator pedal to fully open, perform it in as short a time as possible, but within the range where the inspection result is not adversely affected.
NOTE:
Perform the inspection in the following conditions.
- For AT model or CVT model: Select lever is in "P" range.
- For MT model: Gear shift lever is in the netural position.
- Parking brake activated
After inspection, install the related parts in the reverse order of removal.