Subaru Legacy 2002 Service Manual page 1800

DIAGNOSTIC PROCEDURE FOR POWER INDICATOR LIGHT
No.
8 CHECK INPUT SIGNAL FOR TCM.
1) Connect connector to TCM and combina-
tion meter.
2) Turn ignition switch to ON (engine OFF).
3) Measure voltage between TCM connector
and chassis ground.
Connector & terminal
(B56) No. 11 (+) — Chassis ground (−):
9 CHECK SUBARU SELECT MONITOR.
10 CHECK INHIBITOR SWITCH.
1) Connect Subaru Select Monitor to data link
connector.
2) Turn ignition switch to ON.
3) Subaru Select Monitor to ON.
4) Read data of range switch using Subaru
Select Monitor.
¼ Range switch is indicated in ON ⇔ OFF.
11 CHECK SHORT CIRCUIT OF HARNESS.
1) Disconnect connector from TCM.
2) Remove combination meter.
3) Disconnect connector from combination
meter.
4) Measure resistance of harness connector
between TCM and chassis ground.
Connector & terminal/specified resistance
(B56) No. 11 (+) — Chassis ground (−):
Step
Is the voltage less than 1
V?
Do you have SUBARU
SELECT MONITOR?
When each range is
selected, does LED of
Subaru Select Monitor light
up?
Is the resistance less than
1 MΩ?
AT-31
Automatic Transmission (Diagnostics)
Check Yes
Even if POWER
indicator lights up,
the circuit has
returned to a nor-
mal condition at
this time. A tem-
porary poor con-
tact of the con-
nector or harness
may be the
cause. Repair
harness or con-
nector in TCM.
Go to step 10.
Go to step 11.
Replace TCM.
<Ref. to AT-49,
Transmission
Control Module
(TCM).>
No
Replace TCM.
<Ref. to AT-49,
Transmission
Control Module
(TCM).>
Go to step 11.
Check inhibitor
switch circuit.
<Ref. to AT-120,
CHECK INHIBI-
TOR SWITCH,
Diagnostic Proce-
dure for No-diag-
nostic Trouble
Code (DTC).>
Repair short cir-
cuit in harness
between combina-
tion meter con-
nector and TCM
connector.