Read Diagnostic Trouble Codes

Prepare Subaru Select Monitor kit.

Fig 1: Identifying Subaru Select Monitor Kit
Courtesy of SUBARU OF AMERICA, INC.
Connect diagnosis cable to Subaru Select Monitor.
Insert cartridge into Subaru Select Monitor. Refer to SPECIAL TOOLS , PREPARATION TOOL, General Description.

Fig 2: Inserting Cartridge Into Subaru Select Monitor
Courtesy of SUBARU OF AMERICA, INC.
Connect Subaru Select Monitor to data link connector.
1. Data link connector located in the lower portion of the instrument panel (on the driver's side).
  
  Fig 3: Locating Data Link Connector Lower Portion
  Courtesy of SUBARU OF AMERICA, INC.
2. Connect diagnosis cable to data link connector.
Turn ignition switch to ON (engine OFF) and Subaru Select Monitor switch to ON.

Fig 4: Identifying Subaru Select Monitor Switch
Courtesy of SUBARU OF AMERICA, INC.
On the << Main Menu >> display screen, select the {Each System Check} and press the [YES] key.
On the << System Selection Menu >> display screen, select the {Brake Control System} and press the [YES] key.
Press the [YES] key after displayed the information of engine type.
On the << ABS Diagnosis >> display screen, select the {Diagnostic Code(s) Display} and press the [YES] key.
On the << Diagnostic Code(s) Display >> display screen, select the {Current Diagnostic Code(s)} or {History Diagnostic Code(s)} and press the [YES] key.

NOTE:

For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.
For detailed concerning diagnostic trouble codes (DTC), refer to the LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .