Subaru IMPREZA 2002 Service Manual page 141

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
1
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
CHECK HARNESS CONNECTOR BETWEEN
TCM AND ATF TEMPERATURE SENSOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from transmission
and TCM.
3)Measure the resistance of harness between
TCM and transmission connector.
Connector & terminal
Non-turbo model
Turbo mode
(655) NO. 10
-
(61 1) NO. 12:
(654) NO. 20
-
( 6 1 1) NO. 12:
CHECK HARNESS CONNECTOR BETWEEN
TCM AND ATF TEMPERATURE SENSOR.
Measure the resistance of harness between
TCM and transmission connector.
Connector & terminal
Non-turbo model
Turbo mode
(655) No. 11
-
(61 1) NO. 11:
(654) NO. 11
-
(611) NO. 11:
c
.-
CHECK HARNESS CONNECTOR BETWEEN
TCM AND ATF TEMPERATURE SENSOR.
Measure the resistance of harness between
TCM connector and chassis ground.
Connector & terminal
Non-turbo model
Turbo mode
(655) No. 10
-
Chassis ground:
(654) No. 20
-
Chassis ground:
TCM AND ATF TEMPERATURE SENSOR.
Measure the resistance of harness between
TCM connector and chassis ground.
I CHECK HARNESS CONNECTOR BETWEEN
Connector & terminal
Non-turbo model
Turbo mode
(655) No. 11
-
Chassis ground:
(654) No. 11
-
Chassis ground:
1
CHECK ATF TEMPERATURE SENSOR.
1)Turn the ignition switch to OFF.
2)Connect the connectors to transmission and
TCM.
3)Turn the ignition switch to ON and start
engine.
4)Warm-up the transmission until the ATF tern
perature reaches to 80°C (1 76°F).
NOTE:
If ambient temperature is below 0°C (32°F)
drive the vehicle until the ATF reaches its oper
ating temperature.
5)Disconnect the connector from transmission
6)Measure the resistance between transmis-
sion connector terminals.
Connector & terminal
(T4) NO. 11
-
NO. 12:
Check
;the resistance less than 1
1?
3
the resistance less than 1
I?
;
the resistance more than 1
AR?
s the resistance more than
1
A n ?
s the resistance between 275
md 375
n?
Yes
io to step 2.
io
to step 3.
io to step 4.
S o to step 5.
S o to step
6.
~~~ ~
No
Repair open circuit
in harness
between TCM and
transmission con-
nector.
Repair open circuit
in harness
between TCM and
transmission con-
nector.
Repair short circuit
in harness
between TCM and
transmission con-
nector.
Repair short circuil
in harness
between TCM and
transmission con-
nector.
Go to step 11.
AT-49