Subaru 2002 IMPREZA Service Manual page 1687

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
13 CHECK TRANSFER DUTY SOLENOID (IN
TRANSMISSION).
1)Lift-up the vehicle and place safety stand.
NOTE:
On AWD models, raise all wheels off ground.
2)Drain the automatic transmission fluid.
CAUTION:
Do not drain the automatic transmission flu-
id until it cools down.
3)Remove the extension case and disconnect
connector from transfer duty solenoid.
4)Measure the resistance between transfer
duty solenoid connector and transmission
ground.
Connector & terminal
(AT4) No. 1 — Transmission ground:
14 CHECK HARNESS CONNECTOR BETWEEN
TRANSFER DUTY SOLENOID AND TRANS-
MISSION.
Measure the resistance of harness between
transfer duty solenoid and transmission con-
nector.
Connector & terminal
(T4) No. 6 — (AT4) No. 1:
15 CHECK HARNESS CONNECTOR BETWEEN
TRANSFER DUTY SOLENOID AND TRANS-
MISSION.
Measure the resistance of harness between
transmission connector and transmission
ground.
Connector & terminal
(T4) No. 6 — Transmission ground:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance between 10
and 17 Ω?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
AT-101
Yes
Go to step 14. Replace the trans-
fer duty solenoid.
Go to step 15. Repair the open
circuit in harness
between transfer
duty solenoid and
transmission con-
nector.
Even if the Repair the short
POWER indicator circuit in harness
lights up, the cir- between transfer
cuit has returned duty solenoid and
to a normal condi- transmission con-
tion at this time. A nector.
temporary poor
contact of the con-
nector or harness
may be the cause.
Repair the har-
ness or contact in
transfer duty sole-
noid and transmis-
sion.
No