Subaru Legacy 2003 Service Manual page 3817

INSTRUMENTATION/DRIVER INFO
5. CHECK ENGINE CONTROL MODULE
1 CHECK ENGINE CONTROL MODULE SIG-
NAL.
1) Start the engine.
2) Measure voltage between engine control
module connector and chassis ground.
Connector & terminal
Standard meter (Without OBD):
(B134) No. 30 (+) — Chassis ground ( − − − − ):
Standard meter (With OBD):
(B134) No. 10 (+) — Chassis ground ( − − − − ):
Luminiscent meter:
(B136) No. 9 (+) — Chassis ground ( − − − − ):
Is the measured value same as the speci-
fied value?
2 CHECK HARNESS BETWEEN COMBINA-
TION METER AND ENGINE CONTROL MOD-
ULE.
1) Turn ignition switch to OFF.
2) Disconnect connector from engine control
module and combination meter.
3) Measure resistance between engine con-
trol module harness connector and combi-
nation meter harness connector.
Connector & terminal
Standard meter (Without OBD):
(B134) No. 30 — (i11) No. 7:
Standard meter (With OBD):
(B134) No. 10 — (i11) No. 7:
Luminiscent meter:
(B136) No. 9 — (i11) No. 6:
Is the measured value less than the speci-
fied value?
COMBINATION METER SYSTEM
Step Value
0 ←→ 14 V
10 Ω
IDI-8
Yes
Go to step 2. Check engine con-
trol module. <Ref.
to EN(H4SO)-2,
Basic Diagnostic
Procedure.>or
<Ref. to
EN(H4SOw/
oOBD)-2, Basic
Diagnostic Proce-
dure.>or <Ref. to
EN(H4DOSTC)-2,
Basic Diagnostic
Proce-
dure.>or<Ref. to
EN(H6DO)-2,
Basic Diagnostic
Procedure.> or
<Ref. to
EN(H6DO)-2,
Basic Diagnostic
Procedure.>
Check tachometer. Repair wiring har-
<Ref. to IDI-19, ness.
REMOVAL,
Tachometer.>
No