Subaru IMPREZA 2002 Service Manual page 163

I
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
I
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from TCM and
transmission.
3)Measure the resistance of harness between
TCM and shift solenoid 1 connector.
Connector & terminal
Non-turbo model
Turbo model
(854) NO. 7
-
(B 1 1) NO. 1:
(B54) NO. 22
-
(B1 1) NO. 1:
CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance of harness between
TCM connector and chassis ground.
Connector & terminal
Non-turbo model
Turbo model
b
CHECK SHIFT SOLENOID 1.
Measure the resistance between transmission
connector terminals.
(B54) No. 7
-
Chassis ground:
(B54) No. 22
-
Chassis ground:
Connector & terminal
(T4) NO. 1
-
NO. 16:
I
CHECK OUTPUT SIGNAL EMITTED FROM
TChk
1)Connect the connectors to TCM and trans-
mission.
2)Turn the ignition switch to ON (engine OFF).
3)Move the select lever to " D range.
4)Measure the voltage between TCM connec-
tor and chassis ground.
Connector & terminal
Non-turbo model
Turbo model
(B54) No. 7 (+)
-
Chassis ground (-):
(B54) No. 22 (+)
-
Chassis ground (-):
CHECK OUTPUT SIGNAL EMIlTED FROM
TCM.
1)Move the select lever to " 2 range.
2)Measure the voltage between TCM connec-
tor and chassis ground.
Connector & terminal
Non-turbo model
Turbo model
1
(854) No. 7 (+)
-
Chassis ground ( - ) :
(B54) No. 22 (+)
-
Chassis ground (-):
i CHECK POOR CONTACT.
Check
j
the resistance less than 1
1?
3
the resistance more than 1
A n ?
s the resistance between 10
ind 16 Q?
s the voltage more than 9V?
s the voltage less than l V ?
s there poor contact in shift
;olenoid 1 circuit?
Yes
;o
to step 2.
;o to step 3.
30 to step 4.
30 to step 5.
Even if the AT OIL
rEMP warning
ights up, the cir-
:uit has returned
:o a normal condi-
:ion at this time. A
:emporary poor
:ontact of the con.
lector or harness
nay be the cause.
qepair harness or
:ontact in the
TCM.
Repair poor con-
:act.
No
iepair open circuit
1
harness
letween TCM and
*ansmission con-
lector.
iepair short circuit
i
harness
letween TCM and
ransmission con-
lector.
;o to step 7.
;o
to step 6.
20 to step 6.
3eplace the TCM.
:Ref. to AT-45,
rransmission Con,
rol Module
TCM).>
AT-71