Subaru Legacy 2003 Service Manual page 2369

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
7 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1) Connect all connectors.
2) Connect Subaru Select Monitor to data link
connector.
3) Start the engine, and turn Subaru Select
Monitor switch to ON.
4) Warm-up the transmission until ATF tem-
perature is above 80°C (176°F).
NOTE:
If ambient temperature is below 0°C (32°F),
drive the vehicle until the ATF reaches its oper-
ating temperature.
5) Stop the engine and turn ignition switch to
ON (engine OFF).
6) Move select lever to "N".
7) Read data of 2-4 brake duty solenoid using
Subaru Select Monitor.
•2-4 brake duty solenoid is indicated in "%".
8) Throttle is fully closed.
Is 2-4 brake duty solenoid data within the
specified value?
8 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1) Turn ignition switch to ON (Engine OFF).
2) Throttle is fully open.
3) Read line pressure duty solenoid data
using Subaru Select Monitor.
Is line pressure duty solenoid data less
than the specified value?
9 CHECK POOR CONTACT.
Is there poor contact in 2-4 brake duty solenoid
circuit?
10 CHECK 2-4 BRAKE DUTY SOLENOID (IN
TRANSMISSION).
1) Remove transmission connector from
bracket.
2) Drain automatic transmission fluid.
CAUTION:
Do not drain the automatic transmission flu-
id until it cools down.
3) Remove oil pan, and disconnect connector
from 2-4 brake duty solenoid.
4) Measure resistance between 2-4 brake
duty solenoid connector and transmission
ground.
Terminal
No. 1 — Transmission ground:
Is the measured value within the specified
range?
Step Value
100%
25%
There is poor contact.
2.0 — 4.5 Ω
AT-94
Yes
Go to step 8. Go to step 9.
Even if "POWER" Go to step 9.
indicator lights up,
the circuit has
returned to a nor-
mal condition at
this time. A tempo-
rary poor contact
of the connector or
harness may be
the cause. Repair
harness or con-
nector in TCM and
transmission.
Repair poor con- Replace TCM.
tact. <Ref. to AT-76,
Transmission Con-
trol Module
(TCM).>
Go to step 11. Replace 2-4 brake
duty solenoid.
<Ref. to AT-67,
Shift Solenoids,
Duty Solenoids
and ATF Temper-
ature Sensor.>
No