Subaru Legacy 2004 Service Manual page 2324

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK BODY INTEGRATED UNIT.
1) Connect the Subaru Select Monitor to data
link connector.
2) Turn the ignition switch to ON. (Engine
OFF)
3) Read the DTC of body integrated unit using
Subaru Select Monitor. <Ref. to LAN(diag)-14,
OPERATION, Subaru Select Monitor.>
2 CHECK INPUT SIGNAL TO BODY INTE-
GRATED UNIT.
1) Shift the select lever to "P" range.
2) Read the Tiptronic Mode Switch data of
body integrated unit using Subaru Select Moni-
tor. <Ref. to LAN(diag)-14, OPERATION, Sub-
aru Select Monitor.>
3 CHECK INPUT SIGNAL TO BODY INTE-
GRATED UNIT.
1) Shift the select lever from "P" to "D" range.
2) Read the Tiptronic Mode Switch data of
body integrated unit using Subaru Select Moni-
tor. <Ref. to LAN(diag)-14, OPERATION, Sub-
aru Select Monitor.>
4 CHECK INPUT SIGNAL TO BODY INTE-
GRATED UNIT.
1) Shift the select lever to SPORT mode.
2) Shift the select lever to any other than "D"
range.
3) Read the Tiptronic Mode Switch data of
body integrated unit using Subaru Select Moni-
tor. <Ref. to LAN(diag)-14, OPERATION, Sub-
aru Select Monitor.>
5 CHECK INHIBITOR SWITCH.
Shift the select lever from "P" to "D" range.
6 CHECK INPUT SIGNAL TO TCM.
1) Shift the select lever from "P" to "D" range.
2) Read the Tiptronic Mode Switch data of
TCM unit using Subaru Select Monitor. <Ref.
to 4AT(diag)-17, OPERATION, Subaru Select
Monitor.>
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is DTC displayed?
Is the OFF displayed?
Is the indication per range
OFF?
Is the OFF displayed?
Is the indication of range posi-
tion indicator light in combina-
tion meter synchronized with
position of select lever?
Is the indication per range
OFF?
4AT(diag)-121
Yes
Perform the diag- Go to step 2.
nosis according to
DTC.
Go to step 3. Go to step 7.
Go to step 4. Replace the select
lever assembly.
<Ref. to CS-7,
Select Lever.>
Go to step 5. Replace the select
lever assembly.
<Ref. to CS-7,
Select Lever.>
Go to step 6. Adjust the inhibi-
tor switch and
select cable. <Ref.
to 4AT-52,
ADJUSTMENT,
Inhibitor Switch.>
<Ref. to CS-15,
ADJUSTMENT,
Select Cable.>
Even if the SPORT Replace the TCM.
indicator light is <Ref. to 4AT-65,
blinking, the cir- Transmission Con-
cuit has returned trol Module
to normal condi- (TCM).>
tion at this time. A
temporary short
circuit of connector
or harness may be
the cause. Repair
the harness or
connector.
No