Data Link Connector - Subaru Impreza 2002 Service Manual

3. Idle Speed
A: INSPECTION
1) Before checking idle speed, check the following:
(1) Ensure that air cleaner element is free from
clogging, ignition timing is correct, spark plugs
are in good condition, and that hoses are con-
nected properly.
(2) Ensure that malfunction indicator light
(CHECK ENGINE light) does not illuminate.
2) Warm-up the engine.
3) Stop the engine, and turn the ignition switch to
OFF.
4) Insert the cartridge to SUBARU SELECT MONI-
TOR.
5) Connect SUBARU SELECT MONITOR to the

data link connector.

6) Turn the ignition switch to ON, and SUBARU
SELECT MONITOR switch to ON.
7) Select {2. Each System Check} in Main Menu.
8) Select {Engine Control System} in Selection
Menu.
9) Select {1. Current Data Display & Save} in En-
gine Control System Diagnosis.
10) Select {1.12 Data Display} in Data Display
Menu.
11) Start the engine, and read engine idle speed.
12) Check the idle speed when unloaded. (With
headlights, heater fan, rear defroster, radiator fan,
air conditioning, etc. OFF)
Idle speed (No load and gears in neutral):
700 ± ± ± ± 50 rpm
13) Check the idle speed when loaded. (Turn air
conditioning switch to "ON" and operate compres-
sor for at least one minute before measurement.)
Idle speed [A/C "ON", no load and gears in neu-
tral]:
750 ± ± ± ± 50 rpm
CAUTION:
Never rotate the idle adjusting screw. If the idle
speed is out of specifications, refer to General
On-board Diagnosis Table under "Engine Con-
trol System". <Ref. to EN(TURBO)-2, Basic Di-
agnostic Procedure.>
IDLE SPEED
ME(STi)-23
MECHANICAL