Subaru Legacy (2005 year). Manual - part 1044

LAN(diag)-55

LAN SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

CHECK ECM.
Read the DTC of ECM using Subaru Select 
Monitor.

Is DTC other than “CAN com-
munication” displayed on Sub-
aru Select Monitor?

Perform the diag-
nosis according to 
DTC.

Replace the ECM. 
<Ref. to FU(H4SO 
2.0)-34, Engine 
Control Module 
(ECM).> <Ref. to 
FU(H4SO 2.5)-37, 
Engine Control 
Module (ECM).> 
<Ref. to 
FU(H4DOTC)-34, 
Engine Control 
Module (ECM).> 
<Ref. to 
FU(H6DO)-34, 
Engine Control 
Module (ECM).>

LAN(diag)-56

LAN SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

M: DTC B0212 CAN-HS TCM DATA ABNORMAL

DTC DETECTING CONDITION:
TCM has error, harness between the main harness splice and TCM is open or shorted, connectors are not
connected securely, or the terminal has poor caulking.
TROUBLE SYMPTOM:
• SPORT indicator light blinks.
• “Er HC” or “Er tC” is displayed in odo/trip meter.
WIRING DIAGRAM:

Step

Check

Yes

No

1

CHECK TCM.
Read the DTC of TCM using Subaru Select 
Monitor. <Ref. to 4AT(diag)-16, READ DIAG-
NOSTIC TROUBLE CODE (DTC), OPERA-
TION, Subaru Select Monitor.> <Ref. to 
5AT(diag)-17, READ DIAGNOSTIC TROUBLE 
CODE (DTC), OPERATION, Subaru Select 
Monitor.>

Is DTC other than “CAN com-
munication” displayed on Sub-
aru Select Monitor?

Perform the diag-
nosis according to 
DTC.

Replace the TCM. 
<Ref. to 4AT-66, 
Transmission Con-
trol Module 
(TCM).> <Ref. to 
5AT-61, Transmis-
sion Control Mod-
ule (TCM).>

LAN00029

B280

B:

5

4

6 7

8

2

1

9

3

10

22

23

11 12 13 14 15

24 25

26 27

16 17 18

28 29

19 20

21

30

ABSCM & H/U
VDCCM & H/U

B20

B30

BODY INTEGRATED

MODULE

B280

B:

A12

A3

TCM

B54

A:

A3

A4

5AT

4AT

ECM

B54

A:

1 2

7

8

9

5 6

3 4

10 11 12
19 20 21

13

14 15

16

17

18

22

23

24

5AT

B54

1 2

7

8 9

5

6

3

4

10 11 12

19 20 21

13 14 15 16

17 18

22 23 24

4AT A:

LAN(diag)-57

LAN SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

N: DTC B0213 CAN-HS VDC/ABS DATA ABNORMAL

DTC DETECTING CONDITION:
VDC/ABSCM body error, or the main harness is open or short, the connector is not connected securely and
the terminal has poor caulking.
TROUBLE SYMPTOM:
• ABS warning light and VDC warning light come on.
• “Er HC” or “Er Ab” is displayed in odo/trip meter.
WIRING DIAGRAM:

LAN00152

B280

B:

5

4

6 7

8

2

1

9

3

10

22

23

11 12 13 14 15

24 25

26 27

16 17 18

28 29

19 20

21

30

VDCCM & H/U

B310

B20

B30

BODY INTEGRATED

MODULE

B280

B:

11

26

B301

ABSCM & H/U

13

29

B231

2

1

3

STEERING ANGLE
SENSOR

ABS

ABS

VDC

VDC

E

B301

4 5 6 7 8 9

16 17 18 19 20

2 3

1

21 22 23 24 25 26

10 11

13

14

12

15

B310

1 2 3 4

11 12

14 15 16 17 18 19 20 21 22 23 24 25

10

26

27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

13

7

8

6

5

9

1 2 3 4

B231

ECM

VDC : MODEL WITH VDC

: MODEL WITHOUT VDC

ABS

LAN(diag)-58

LAN SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

CHECK VDC/ABSCM.
Read the DTC of VDC/ABSCM using Subaru 
Select Monitor.

Is DTC other than “CAN com-
munication” displayed on Sub-
aru Select Monitor?

Perform the diag-
nosis according to 
DTC.

Replace the VDC/
ABSCM. <Ref. to 
ABS-6, ABS Con-
trol Module and 
Hydraulic Control 
Unit (ABSCM&H/
U).> <Ref. to VDC-
7, VDC Control 
Module and 
Hydraulic Control 
Unit (VDCCM&H/
U).>