Subaru 2002 IMPREZA Service Manual page 1066

MECHANICAL
4. Ignition Timing
A: INSPECTION
1) Before checking the ignition timing speed, check
the following:
(1) Ensure the air cleaner element is free from
clogging, spark plugs are in good condition, and
that hoses are connected properly.
(2) Ensure the malfunction indicator light
(CHECK ENGINE light) does not illuminate.
2) Warm-up the engine.
3) Stop the engine, and then turn the ignition switch
to OFF.
4) Insert the cartridge to SUBARU SELECT MONI-
TOR.
5) Connect the SUBARU SELECT MONITOR to
data link connector.
6) Turn the ignition switch to ON, and SUBARU
SELECT MONITOR switch to ON.
7) Select the {2. Each System Check} in Main
Menu.
8) Select the {Engine Control System} in Selection
Menu.
9) Select the {1. Current Data Display & Save} in
Engine Control System Diagnosis.
10) Select the {1.12 Data Display} in Data Display
Menu.
11) Start the engine, at idle speed and check the ig-
nition timing.
Ignition timing [BTDC/rpm]:
12 °± °± °± °± 3 ° ° ° ° /750
If the timing is not correct, check the ignition control
system. Refer to Engine Control System. <Ref. to
EN(TURBO)-2, Basic Diagnostic Procedure.>
IGNITION TIMING
ME(TURBO)-24