Subaru Impreza 2003 Service Manual page 1221

INSPECTION MODE
ENGINE (DIAGNOSTICS)
6) Using the select lever or shift lever, turn the "P"
position switch and "N" position switch to ON.
7) Depress the brake pedal to turn brake switch
ON. (AT model)
8) Keep the engine speed in 2,500 — 3,000 rpm
range for 40 seconds.
9) Place the select lever or shift lever in "D" range
(AT model) or "1st" gear (MT model) and drive the
vehicle at 5 to 10 km/h (3 to 6 MPH).
NOTE:
• On AWD model, release the parking brake.
• The speed difference between front and rear
wheels may light ABS warning light, but this indi-
cates no malfunctions. When the engine control di-
agnosis is finished, perform the ABS memory
clearance procedure of self-diagnosis system.
10) Using the OBD-II general scan tool, check for
DTC and record the result(s).
NOTE:
• For detailed operation procedures, refer to the
OBD-II General Scan Tool Instruction Manual.
• For detailed concerning DTC, refer to the List of
Diagnostic Trouble Code (DTC).
<Ref. to EN(H4DOTC)-75, List of Diagnostic Trou-
ble Code (DTC).>
EN(H4DOTC)-45