Check Accelerator Pedal Sensor Area (Method With Circuit Tester)

WARNING: This page is about a different variant/trim than selected.

NON-TURBO MODEL

Disconnect the ground terminal from battery sensor. Ref. to NOTE > NOTE > >BATTERY .
Remove the glove box. Ref. to EXTERIOR/INTERIOR TRIM>Glove Box>REMOVAL .
Push down the claws, and remove the relay block.

Fig 1: Locating Relay Block Claws
Courtesy of SUBARU OF AMERICA, INC.
While pressing the section (A) shown in the figure, move the lock lever (B) in the direction of the arrow to disconnect the bulkhead harness connectors from the ECM in numerical order as shown in the figure.

Fig 2: Moving Bulkhead Harness Connector Lock Lever
Courtesy of SUBARU OF AMERICA, INC.
Set the ST between the ECM and bulkhead harness connector. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>General Description>CAUTION .
ST 18460AA050 CHECK BOARD
Connect the ground terminal to the battery sensor. Ref. to NOTE > NOTE > >BATTERY .
Turn the ignition switch to ON. (Engine OFF)

Measure the voltage between ECM connector terminals using ST.

Main sensor side

Fig 3: Checking ECM Connector Terminals Voltage Using Special Tool (Main Sensor Side)
Courtesy of SUBARU OF AMERICA, INC.
Sub sensor side

Fig 4: Checking ECM Connector Terminals Voltage Using Special Tool (Sub Sensor Side)

Courtesy of SUBARU OF AMERICA, INC.

Accelerator pedal sensor	Accelerator pedal	Terminal No.	Standard
Main	Not depressed (full closed)	29 (+) and 33 (-)	0.3 - 1.1 V
Main	Depressed (full opened)	29 (+) and 33 (-)	2.3 - 3.8 V
Sub	Not depressed (full closed)	31 (+) and 34 (-)	0.3 - 1.1 V
Sub	Depressed (full opened)	31 (+) and 34 (-)	2.3 - 3.8 V

Disconnect the ground cable from battery. Ref. to NOTE > NOTE > >BATTERY .
NOTE: For model with battery sensor, disconnect the ground terminal from battery sensor.
While pressing the section (A) shown in the figure, move the lock lever (B) in the direction of the arrow to disconnect the connectors from the ECM in numerical order as shown in the figure.

Fig 5: Moving ECM Connector Lock Lever (Turbo Model)
Courtesy of SUBARU OF AMERICA, INC.
Install the special tool between the ECM and body harness and the engine harness. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>General Description>CAUTION .
ST 18460AA030 CHECK BOARD
Connect the battery ground terminal. Ref. to NOTE > NOTE > >BATTERY .
Turn the ignition switch to ON. (Engine OFF)

Measure the voltage between ECM connector terminals using ST.

Main sensor side

Fig 6: Checking ECM Connector Terminals Voltage Using Special Tool (Main Sensor Side)
Courtesy of SUBARU OF AMERICA, INC.
Sub sensor side

Fig 7: Checking ECM Connector Terminals Voltage Using Special Tool (Sub Sensor Side)

Courtesy of SUBARU OF AMERICA, INC.

Accelerator pedal sensor	Accelerator pedal	Terminal No.	Standard
Main	Not depressed (full closed)	17 (+) and 31 (-)	0.4 - 1.0 V
Main	Depressed (full opened)	17 (+) and 31 (-)	2.4 - 3.7 V
Sub	Not depressed (full closed)	29 (+) and 19 (-)	0.4 - 1.0 V
Sub	Depressed (full opened)	29 (+) and 19 (-)	2.4 - 3.7 V