Subaru IMPREZA 2002 Service Manual page 164

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
I
AUTOMATIC TRANSMISSION [DIAGNOSTICSI
Check
s the resistance between 10
ind 16 Q?
Step
r
CHECK SHIFT SOLENOID 1 (IN TRANSMIS-
SION).
1)Remove the transmission connector from
bracket.
2)Lift-up or raise the vehicle and support with
safety stand.
CAUTION:
On AWD models, raise all wheels off
ground.
3)Drain the automatic transmission fluid.
CAUTION:
Do not drain the automatic transmission flu-
id until it cools down.
4)Remove the oil pan, and disconnect the con-
nector from shift solenoid 1.
5)Measure the resistance between shift sole-
noid 1 connector and transmission ground.
Terminal
No. 1
-
Transmission ground:
I CHECK HARNESS CONNECTOR BETWEEN
SHIFT SOLENOID 1 AND TRANSMISSION.
Measure the resistance of harness between
shift solenoid 1 and transmission connector.
. .
Connector & terminal
(AT5) NO. 1
-
(T4) NO. 1:
1
CHECK HARNESS CONNECTOR BETWEEN
SHIFT SOLENOID 1 AND TRANSMISSION.
Measure the resistance of harness between
shift solenoid 1 connector and transmission
ground.
Connector & terminal
(T4)
No.
1
-
Transmission ground:
Yes
Go to step 8.
s
the resistance more than 1
A n ?
s the resistance less than
1
2?
[Go to step 9.
Even if the AT OIL
TEMP warning
lights up, the cir-
cuit has returned
to a normal condi-
tion at this time. A
temporary poor
contact of the con-
nector or harness
may be the cause.
Repair harness or
connector in shift
solenoid 1 and
transmission.
No
3eplace the shift
;olenoid 1. <Ref.
o AT-39, Shift
Solenoids, Duty
Solenoids and ATF
remperature Sen-
ior.>
3epair open circuit
n harness
)etween shift sole-
ioid 1 and trans-
nission connector.
3epair short circuit
iarness between
;hift solenoid 1
ind transmission
:onnector.
AT-72