Read Diagnostic Trouble Code (DTC)

Prepare the Subaru Select Monitor kit. < Refer to PREPARATION TOOL , General Description. >
Prepare PC with Subaru Select Monitor installed.
Connect the USB cable to the SDI (Subaru Diagnostic Interface) and the USB port of the personal computer (port for Subaru Select Monitor).
NOTE: The dedicated port for the Subaru Select Monitor means the USB port which was used to install the Subaru Select Monitor.
Connect the diagnosis cable to SDI.
Connect the SDI to the data link connector located in the lower portion of the instrument panel (on the driver's side).

Fig 1: Locating Data Link Connector
Courtesy of SUBARU OF AMERICA, INC.

CAUTION: Do not connect scan tools other than the Subaru Select Monitor.
Start the PC.
Turn the ignition switch to ON (engine OFF).
Run the "PC application for Subaru Select Monitor".
On the «Main Menu» display screen, select the {Each System Check}.
On the «System Selection Menu», select {Transmission Control System}.
After transmission type information pops up, select [OK].
On the «Transmission Diagnosis» display screen, select {Diagnostic Code(s) Display}.
On the «Diagnostic Code(s) Display» screen, select the {Temporary Diagnostic Code(s)} or {Memorized Diagnostic Code(s)}