Subaru IMPREZA 2002 Service Manual page 180

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
I
Check
s the voltage between 1.5 and
Step
1
CHECK OUTPUT SIGNAL EMITTED FROM
Yes
Go to step 12.
-
2
..
~
s
the voltage less than 1 V
TCM.
1)Connect all connectors.
2)Start the engine and warm-up the transmis-
sion until the ATF temperature is above 80°C
(1 76°F).
NOTE:
If the ambient temperature is below 0°C (32°F:
drive the vehicle until the ATF reaches its ope1
ating temperature.
3)Turn the ignition switch to ON (engine OFF).
4)Move the select lever to "N".
5)Measure the voltage between TCM connec-
tor and chassis ground.
Connector & terminal
(854)
No. 9 (+)
-
Chassis ground ( - ) :
CHECK OUTPUT SIGNAL EMITTED FROM
TCM.
Measure the voltage between TCM connector
and chassis ground.
Connector & terminal
(B54) No. 9 (+)
-
Chassis ground (-):
Even if the AT OIL
3 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1)Connect the connectors to TCM and trans-
mission.
2)Connect the Subaru Select Monitor to data
link connector.
3)Start the engine, and turn the Subaru Select
Monitor switch to ON.
4)Warm-up the transmission until the ATF tem.
perature is above 80°C (176°F).
NOTE:
If the 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 the ignition switch
to ON (engine OFF).
6)Move the select lever to "N".
7)Read the data of line pressure duty solenoid
using Subaru Select Monitor.
*Line pressure duty solenoid is indicated in
"o/o",
1)Throttle is fully closed.
iith throttle fully open?
j
the value 1 OO%?
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 trans-
mission.
Go to step 14.
No
; o to step 15.
; o to step 15.
io to step 15.
AT-88