Subaru Legacy 2002 Service Manual page 1799

DIAGNOSTIC PROCEDURE FOR POWER INDICATOR LIGHT
Automatic Transmission (Diagnostics)
No.
2 CHECK POWER INDICATOR LIGHT.
1) Turn ignition switch to OFF.
2) Remove combination meter.
3) Remove POWER indicator light bulb from
combination meter.
3 CHECK POWER INDICATOR LIGHT.
Perform "Read Diagnostic Trouble Code
(DTC)". <Ref. to AT-21, WITHOUT SUBARU
SELECT MONITOR OPERATION, Read Diag-
nostic Trouble Code (DTC).>
4 CHECK FUSE (No. 5).
Remove fuse (No. 5).
5 CHECK HARNESS CONNECTOR
BETWEEN COMBINATION METER AND
IGNITION RELAY.
1) Turn ignition switch to ON (engine OFF).
2) Measure voltage between combination
meter connector and chassis ground.
Connector & terminal
Except 3.0 L model
(i12) No. 3 (+) — Chassis ground (−):
3.0 L model
(i11) No. 5 (+) — Chassis ground (−):
(i10) No. 8 (+) — Chassis ground (−):
6 CHECK COMBINATION METER.
Measure voltage between combination meter
connector and chassis ground.
Connector & terminal
Except 3.0 L model
(i11) No. 6 (+) — Chassis ground (−):
3.0 L model
(i11) No. 12 (+) — Chassis ground (−):
7 CHECK OPEN CIRCUIT OF HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect TCM and combination meter
connector.
3) Measure resistance of harness between
combination meter.
Connector & terminal
Except 3.0 L model
(B56) No. 11 — (i11) No. 6:
3.0 L model
(B56) No. 11 — (i12) No. 12
Step
Is POWER indicator light
bulb OK?
Does POWER indicator
light blink?
Is the fuse (No. 5) blown
out?
Is voltage more than 9 V?
Is voltage less than 1 V?
Is the resistance less than
1 Ω?
AT-30
Check Yes
Go to step 4.
A temporary poor
contact of the
connector or har-
ness may be the
cause. Repair
harness or con-
nector in TCM,
inhibitor switch
and combination
meter.
Replace fuse (No.
5). If replaced
fuse (No. 5) is
blown out easily,
repair short circuit
in harness
between fuse (No.
5) and combina-
tion meter.
Go to step 6.
Repair combina-
tion meter. <Ref.
to IDI-15, Combi-
nation Meter
Assembly.>
Go to step 8.
No
Replace POWER
indicator light
bulb.
Go to step 9.
Go to step 5.
Repair open or
short circuit in
harness between
combination meter
and battery.
Go to step 7.
Repair open cir-
cuit in harness
between TCM and
combination
meter, and poor
contact in cou-
pling connector.