Throttle Sensor (Method With SUBARU Select Monitor)

NOTE:

Individual difference of the accelerator pedal may not be corrected sufficiently on the ECM side after the memory was cleared or the battery was removed and installed on the vehicle. Therefore, using the Subaru Select Monitor, check that the accelerator opening angle signal indicates [100%], when the accelerator pedal is fully depressed, and then perform the inspection.
If the accelerator opening angle signal does not indicate [100%], check the accelerator pedal. Ref. to SPEED CONTROL SYSTEMS (H4DOTC)>ACCELERATOR PEDAL>INSPECTION .

After warming-up the engine, turn the ignition switch to OFF.
Turn the ignition switch to ON. (Engine OFF)

While reading the accelerator opening angle signal and throttle sensor voltage using Subaru Select Monitor, depress the accelerator pedal to fully open and fully closed. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>DATA MONITOR .

NOTE: Due to the specification of the Subaru Select Monitor, value read from the accelerator opening angle signal is highlighted and displayed as the voltage readings of sub throttle sensor.

Check

When voltage is within standard values → Normal
When voltage is not within standard values → It is possible that there is a connector connection failure, harness open circuit, short circuit, or malfunction of the throttle body. Perform inspection or replacement.

If throttle sensor voltage does not change → Go to step 4.

Throttle sensor	Accelerator pedal	Acceleration opening angle signal	Standard
Main	Not depressed (full closed)	0.0 %	Approx. 0.7 V
Main	Depressed (full opened)	100.0 %	Approx. 3.9 V
Sub	Not depressed (full closed)	0.0 %	Approx. 0.7 V
Sub	Depressed (full opened)	100.0 %	Approx. 3.9 V

Start the engine.
While reading the accelerator opening angle signal and throttle sensor voltage using Subaru Select Monitor, depress the accelerator pedal to fully open and fully closed. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>DATA MONITOR .