Subaru Legacy (2005 year). Manual - part 602

5AT-107

AUTOMATIC TRANSMISSION

Transmission Control Device

36.Transmission Control Device

A: REMOVAL

1) Remove the transmission assembly from vehi-
cle. <Ref. to 5AT-38, REMOVAL, Automatic Trans-
mission Assembly.>
2) Pull out the torque converter assembly. <Ref. to
5AT-70, REMOVAL, Torque Converter Assembly.>
3) Lift-up the lever on rear side of transmission har-
ness connector, and then disconnect it from the
stay.
4) Disconnect the air breather hose. <Ref. to 5AT-
68, REMOVAL, Air Breather Hose.>
5) Wrap vinyl tape around the nipple attached to
the air breather hose.
6) Remove the pitching stopper bracket.
7) Remove the control valve body assembly. <Ref.
to 5AT-58, REMOVAL, Control Valve Body.>
8) Pull out the straight pin of manual plate.

9) Remove the bolts securing select lever, and then
remove the select lever, manual plate and parking
rod.

NOTE:
Be careful not to damage the lips of press-fitted oil
seal in the case.

10) Remove the detent spring.

B: INSTALLATION

1) Install the detent spring to transmission case.

Tightening torque:

6 N

⋅

m (0.6 kgf-m, 4.4 ft-lb)

2) Insert the select lever, and then tighten the bolt.

Tightening torque:

6 N

⋅

m (0.6 kgf-m, 4.4 ft-lb)

(A) Bolt

(B) Range select lever

(C) Manual plate

(D) Parking rod

AT-00305

AT-00306

AT-00307

AT-00307

AT-00308

5AT-108

AUTOMATIC TRANSMISSION

Transmission Control Device

3) Insert the manual plate and parking rod.

4) Insert the spring pin to manual plate.

5) Install the control valve body assembly and oil
pan. <Ref. to 5AT-58, INSTALLATION, Control
Valve Body.>
6) Install the pitching stopper bracket.

Tightening torque:

41 N

⋅

m (4.2 kgf-m, 30.2 ft-lb)

7) Insert the transmission connector to the stay.
8) Install the air breather hose. <Ref. to 5AT-68, IN-
STALLATION, Air Breather Hose.>
9) Install the torque converter assembly. <Ref. to
5AT-70, INSTALLATION, Torque Converter As-
sembly.>
10) Install the transmission assembly into vehicle.
<Ref. to 5AT-42, INSTALLATION, Automatic
Transmission Assembly.>

C: INSPECTION

Make sure the manual lever and detent spring are
not worn or otherwise damaged.

(A) Bolt

(B) Range select lever

(C) Manual plate

(D) Parking rod

AT-00306

AT-00305

AUTOMATIC TRANSMISSION
(DIAGNOSTICS)

5AT(diag)

Page

1.

Basic Diagnostic Procedure ........................................................................2

2.

Check List for Interview...............................................................................4

3.

General Description ....................................................................................5

4.

Electrical Component Location ...................................................................7

5.

Transmission Control Module (TCM) I/O Signal .......................................13

6.

Subaru Select Monitor...............................................................................17

7.

Read Diagnostic Trouble Code (DTC) ......................................................20

8.

Inspection Mode........................................................................................21

9.

Clear Memory Mode..................................................................................22

10.

Learning Control........................................................................................23

11.

SPORT Indicator Light Display .................................................................24

12.

Diagnostic Procedure for Subaru Select Monitor Communication ............27

13.

List of Diagnostic Trouble Code (DTC) .....................................................31

14.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) .....................35

15.

Diagnostic Procedure without Diagnostic Trouble Code (DTC) ..............128

16.

General Diagnostic Table........................................................................137

5AT(diag)-2

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

Basic Diagnostic Procedure

1. Basic Diagnostic Procedure

A: PROCEDURE

Step

Check

Yes

No

1

CHECK PRE-INSPECTION.
1) Ask the customer when and how the trou-
ble occurred using the interview checklist. 
<Ref. to 5AT(diag)-4, Check List for Interview.>
2) Before performing diagnosis, inspect the 
following items which might influence the AT 
problems.
• General inspection <Ref. to 5AT(diag)-5, 
INSPECTION, General Description.>
• Oil leakage
• Stall speed test <Ref. to 5AT-32, Stall Test.>
• Line pressure test <Ref. to 5AT-35, Line 
Pressure Test.>
• Transfer clutch pressure test <Ref. to 5AT-
36, Transfer Clutch Pressure Test.>
• Time lag test <Ref. to 5AT-34, Time Lag 
Test.>
• Road test <Ref. to 5AT-31, Road Test.>
• Inhibitor switch <Ref. to 5AT-51, Inhibitor 
Switch.>

Is the unit that might influence 
the AT problem normal?

Go to step 2.

Repair or replace 
each item.

2

CHECK SPORT INDICATOR LIGHT.
After the ignition switch is turned to ON, wait 
for at least 2 seconds.

Does the SPORT indicator 
light illuminate?

Go to step 4.

Go to step 3.

3

CHECK SPORT INDICATOR LIGHT.
1) Turn the ignition switch to OFF.
2) Check the SPORT indicator light. <Ref. to 
5AT(diag)-25, INSPECTION, SPORT Indicator 
Light Display.>
3) After the ignition switch is turned to ON, 
wait for at least 2 seconds.

Does the SPORT indicator 
light blink?

Go to step 4.

Go to step 5.

4

CHECK DTC.
Display DTC.

NOTE:

If the communication function of the Subaru Se-
lect Monitor cannot be executed normally,
check the communication circuit. <Ref. to
5AT(diag)-27, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, Diagnostic Proce-
dure for Subaru Select Monitor
Communication.>

Is DTC displayed on the Sub-
aru Select Monitor?

Go to step 6.

NOTE:
Record all DTC.

Go to step 5.

5

PERFORM GENERAL DIAGNOSTICS.
1) Inspect using “Diagnostic Procedure with-
out Diagnostic Trouble Code (DTC)”. <Ref. to 
5AT(diag)-128, Diagnostic Procedure without 
Diagnostic Trouble Code (DTC).>
2) Perform the clear memory mode.
3) Perform the inspection mode. <Ref. to 
5AT(diag)-21, Inspection Mode.>
4) Display DTC.

Is DTC displayed on the Sub-
aru Select Monitor?

Go to step 6.

Inspect using 
“General Diagnos-
tic Table”. <Ref. to 
5AT(diag)-137, 
General Diagnos-
tic Table.>