Subaru IMPREZA 2002 Service Manual page 214

DIAGNOSTIC PROCEDURE FOR NO-DIAGNOSTIC TROUBLE CODE (DTC)
I
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check Step
CHECK INPUT SIGNAL FOR TCM.
Measure the voltage between TCM and chas-
sis ground.
Connector & terminal
Non-turbo model
Turbo model
(B55) No. 8 (+)
-
Chassis ground
( - ) I
(B55) No. 4 (+)
-
Chassis ground ( - ) :
CHECK "D" RANGE INDICATOR LIGHT
BULB.
1)Turn the ignition switch to OFF.
2)Remove the combination meter.
3)Remove the " D range indicator light bulb
from combination meter.
CHECK HARNESS CONNECTOR BETWEEN
TCM AND COMBINATION METER.
1)Disconnect the connectors from TCM and
combination meter.
2)Measure the resistance of harness between
TCM and combination meter.
Connector & terminal
Non-turbo model
Turbo model
(B55) NO. 8
-
(i12) NO. 11:
(B55) NO. 4
-
(i12) NO. 11:
CHECK HARNESS CONNECTOR BETWEEN
TCM AND INHIBITOR SWITCH.
1)Turn the ignition switch to OFF.
2)Disconnect the connectors from TCM, inhibi-
tor switch and combination meter.
3)Measure the resistance of harness between
TCM and chassis ground.
Connector & terminal
Non-turbo model
Turbo model
(B55) No. 8
-
Chassis ground:
(B55) No. 4
-
Chassis ground:
CHECK HARNESS CONNECTOR BETWEEN
TCM AND INHIBITOR SWITCH.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from TCM and
inhibitor switch.
3)Measure the resistance of harness between
TCM and inhibitor switch connector.
Connector & terminal
Non-turbo model
Turbo model
(655) NO. 18
-
(P)
NO. 11:
(655) NO. 5
-
(R)
NO. 1 1:
Yes
s the voltage more than 8 V in
Ither ranges?
s the " D range indicator light
lulb OK?
I
Go to step 65.
s
the resistance less than 1
2?
s
the resistance more than 1
dQ?
s
the resistance less than 1
2?
; o
to step 45.
io
to step 65.
20 to step 47.
io to step 48.
No
3eplace the TCM.
:Ref. to AT-45,
rransmission Con-
ro1 Module
TCM).>
3eplace the " D
ange indicator
ight bulb. <Ref. to
DI-11, Combina-
ion Meter Assem-
llY.>
3epair open circuit
n harness
letween TCM con-
lector and combi-
ration meter, and
TCM connector.
3epair ground
;hort circuit in " D
ange circuit.
3epair open circuit
n harness
letween TCM and
nhibitor switch
:onnector, and
loor contact in
:oupling connec-
or.
AT-I 22