Subaru IMPREZA 2002 Service Manual page 175

I
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
CHECK HARNESS CONNECTOR BETWEEN
Check
Is the resistance less than 1
1)Turn the ignition switch to OFF.
2)Disconnect the connector from TCM and
transmission.
3)Measure the resistance of harness between
TCM and transmission connector.
Connector & terminal
Non-turbo model
Turbo model
(B54) NO. 5
-
(B11) NO. 4:
(854) NO. 16
-
(81 I ) NO. 4:
TCM.
1)Connect the connectors to TCM and trans-
mission.
2)Lift-up or raise the vehicle and support with
safety stands.
CAUTION:
On AWD models, raise all wheels off
ground.
3)Start the engine and warm-up the transmis-
sion until the ATF temperature 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.
4)Move the select lever to "l", and slowly
increase vehicle speed to 10 km/h (6 MPH).
CHECK HARNESS CONNECTOR BETWEEN
Measure the resistance of harness between
TCM connector and transmission ground.
TCM AND TRANSMISSION.
Connector & terminal
Non-turbo model
Turbo model
(854) No. 5
-
Chassis ground:
(B54) No. 16
-
Chassis ground:
CHECK 2-4 BRAKE TIMING SOLENOID.
Measure the resistance between transmission
connector terminals.
Connector & terminal
NOTE:
The speed difference between front and rea
Is the resistance more than 1
MQ?
I s
the resistance between 10
and 16 Q?
wheels may light the ABS warning light, but thi!
indicates no malfunction. When the AT contrc
diagnosis is finished, perform the ABS memo?
clearance procedure of on-board diagnostic!
system. <Ref. to ABS-22, Clear Memor
Mode.>
5)Measure the voltage between TCM connec-
tor and chassis ground.
Connector & terminal
Non-turbo model
Turbo model
(B54) No. 5 (+)
-
Chassis ground (-):
(B54) No. 76 (+)
-
Chassis ground (-):
CHECK OUTPUT SIGNAL EMllTED FROM
1
)
to step 2.
in harness
between TCM and
transmission con-
I s
the voltage less than 1 V?
nector.
in harness
between TCM and
transmission con-
nector.
+---
o to step 4. Go to step 7.
AT-83