Non-Turbo Models

The TCM performs gear shifting control according to driving conditions by using the shift point characteristic data stored in its memory. Appropriate solenoids are operated at the proper timing corresponding to the shift pattern, throttle position, and vehicle speed for smooth shifting.

NOTE: When the ATF temperature is below approximately -10°C (-50°F), the gear cannot be shifted to 4th speed.

SOLENOID SPECIFICATION

Solenoid 1		Solenoid 2
1st	ON	ON
2nd	OFF	ON
3rd	OFF	OFF
4th	ON	OFF

Fig 1: Identifying Shifting Control Graph (Non-Turbo Models)

Courtesy of SUBARU OF AMERICA, INC.

The TCM activates both solenoids 1 and 2 in response to throttle and vehicle speed signals.
Shift valves move in response to operation of the solenoids, supplying or interrupting the line pressure to each clutch.
A shift to each gear takes place according to ON-OFF operation of both the solenoids as indicated in the table above.

Fig 2: Identifying Clutch Fluid Movement Direction
Courtesy of SUBARU OF AMERICA, INC.