Subaru 2003 LEGACY Service Manual page 111

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
11 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1) Move select lever to "N" with throttle fully
close (vehicle speed 0 km/h or 0 MPH).
2) Rear data of transfer duty solenoid using
Subaru Select Monitor.
•Transfer duty solenoid is indicated in "%".
Is transfer duty solenoid data the specified
value?
12 CHECK POOR CONTACT.
Is there poor contact in transfer duty solenoid
circuit?
13 CHECK TRANSFER DUTY SOLENOID (IN
TRANSMISSION).
1) Lift-up the vehicle and place safety stand.
2) Drain automatic transmission fluid.
CAUTION:
Do not drain the automatic transmission flu-
id until it cools down.
3) Remove extension case, and disconnect
connector from transfer duty solenoid.
4) Measure resistance between transfer duty
solenoid connector and transmission
ground.
Connector & terminal
(AT4) No. 1 — Transmission ground:
Is the measured value within the specified
range?
14 CHECK HARNESS CONNECTOR BETWEEN
TRANSFER DUTY SOLENOID AND TRANS-
MISSION.
Measure resistance of harness between trans-
fer duty solenoid and transmission connector.
Connector & terminal
(T4) No. 6 — (AT4) No. 1:
Is the measured value less than the specified
value?
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Value
Approx. 40%
There is poor contact.
10 — 17 Ω
1 Ω
AT-109
Yes
Even if "POWER" Go to step 12.
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 the trans-
fer duty solenoid
and TCM connec-
tor.
Repair poor con- Replace TCM.
tact. <Ref. to AT-76,
Transmission Con-
trol Module
(TCM).>
Go to step 14. Replace transfer
duty solenoid.
Go to step 15. Repair open circuit
in harness
between transfer
duty solenoid and
transmission con-
nector.
No