Throttle Sensor (Method With Circuit Tester)

Disconnect the ground terminal from battery sensor.
Refer to REPAIR CONTENTS>NOTE>BATTERY .
Disconnect the connector from ECM.
Refer to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>ENGINE CONTROL MODULE (ECM)>REMOVAL .
Attach the ST between the ECM, engine wiring harness and the bulkhead wiring harness.
Refer to ENGINE (DIAGNOSTICS) (H4DO)>GENERAL DESCRIPTION>PREPARATION TOOL>HOW TO USE CHECK BOARD .

Special tool:

CHECK BOARD (18460AA180)
Connect the ground terminal to battery sensor.
Refer to REPAIR CONTENTS>NOTE>BATTERY .
Turn the ignition switch to ON. (Engine OFF)

Measure the voltage between ECM connector terminals.

Courtesy of SUBARU OF AMERICA, INC.

Throttle sensor	Accelerator pedal	Terminal No.	Standard
Main	Not depressed (full closed)	29 (+) and 30 (-)	Approx. 0.6 - 1.2 V
Main	Depressed (full opened)	29 (+) and 30 (-)	Approx. 3.8 - 4.4 V
Sub	Not depressed (full closed)	43 (+) and 30 (-)	Approx. 1.4 - 2.0 V
Sub	Depressed (full opened)	43 (+) and 30 (-)	Approx. 4.0 - 4.6 V

After inspection, install the related parts in the reverse order of removal.
NOTE: For installation procedures of ECM connectors, refer to:
Refer to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>ENGINE CONTROL MODULE (ECM)>INSTALLATION .