Subaru Legacy 2004 Service Manual page 2337

Diagnostic Procedure without Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
1 CHECK BODY INTEGRATED UNIT.
Check DTC of body integrated unit.
2 CHECK TCM.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON. (Engine
OFF)
4) Turn Subaru Select Monitor switch to ON.
5) Shift the select lever to manual mode side.
6) Read the data of gear position using Sub-
aru Select Monitor.
3 CHECK TCM.
1) Up-shift the select lever.
2) Read the data of gear position using Sub-
aru Select Monitor.
4 CHECK BODY INTEGRATED UNIT.
Read the data of SPORT shift gear position
using Subaru Select Monitor.
5 CHECK COMBINATION METER.
<Ref. to IDI-3, INSPECTION, Combination
Meter System.>
Check
Is DTC of CAN communication
displayed?
Is the gear position 1?
Is the gear position 2?
Is the SPORT shift gear posi-
tion 2?
Is the SPORT shift indicator
OK?
4AT(diag)-134
Yes
Perform the diag- Go to step 2.
nosis according to
DTC.
Go to step 3. Replace the TCM.
<Ref. to 4AT-65,
Transmission Con-
trol Module
(TCM).>
Go to step 4. Replace the TCM.
<Ref. to 4AT-65,
Transmission Con-
trol Module
(TCM).>
Go to step 5. Check the body
integrated unit.
Check the buzzer. Replace the com-
<Ref. to 4AT(diag)- bination meter
138, Diagnostics assembly. <Ref. to
with Phenome- IDI-16, Combina-
non.> tion Meter Assem-
bly.>
No