Subaru Legacy IV (2008 year). Manual - part 1180

 

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Subaru Legacy IV (2008 year). Manual - part 1180

 

 

LAN(diag)-54

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

LAN SYSTEM (DIAGNOSTICS)

17

CHECK DTC.
Connect the Subaru Select Monitor and read 
the Diagnostic Trouble Code (DTC) of ECM. 
<Ref. to EN(H6DO)(diag)-43, OPERATION, 
Read Diagnostic Trouble Code (DTC).>

Is DTC other than “CAN com-
munication” displayed?

Perform the diag-
nosis according to 
DTC.

Go to step 18.

18

CHECK DTC.
Connect the Subaru Select Monitor and read 
the Diagnostic Trouble Code (DTC) of VDC/
ABS CM. <Ref. to VDC(diag)-14, HOW TO USE 
SUBARU SELECT MONITOR, OPERATION, 
Subaru Select Monitor.>

Is DTC other than “CAN com-
munication” or “C0057” dis-
played?

Perform the diag-
nosis according to 
DTC.

Go to step 19.

19

CHECK DTC.
Connect the Subaru Select Monitor and read 
the Diagnostic Trouble Code (DTC) of TCM. 
<Ref. to 5AT(diag)-18, READ DIAGNOSTIC 
TROUBLE CODE (DTC), OPERATION, Subaru 
Select Monitor.>

Is DTC other than “CAN com-
munication” displayed?

Perform the diag-
nosis according to 
DTC.

Replace the body 
integrated unit. 
<Ref. to SL-56, 
REMOVAL, Body 
Integrated Unit.>

Step

Check

Yes

No

LAN(diag)-55

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

LAN SYSTEM (DIAGNOSTICS)

J: DTC U1211 CAN-HS ECM DATA ABNORMAL

DTC DETECTING CONDITION:
Defective data from ECM.
TROUBLE SYMPTOM:
“Er HC” or “Er EG” is displayed in odo/trip meter. (Except for meter with MID)
WIRING DIAGRAM:

LAN00382

B40

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

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

B231

1 2 3 4

A: B54

16

10 11 12 13 14 15

25

24

30

9

8

7

17 18 19 20
28

21 22 23

29

32

31

1

2

3

4

5

6

27

26

33 34 35

B310

4 5 6 7 8 9

26 27 28 29 30

2 3

1

31 32 33 34 35 36

10 11

14 15 16 17 18 19

37 38 39 40

12 13

41 42 43 44 45 46

20 21

23

24

22

25

B230

1

2

3

4

B170

3 4

5 6

1 2

7 8

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

B365

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

C: B136

B:

B55

5

6

7

2

1

3

4

29

10 11 12 13 14 15

25

24

16

30

9

8

17 18 19

20
28

21 22 23

32

31

26 27

33

34 35

2

3

B230

YAW RATE 

SENSOR

B231

2

1

STEERING

ANGLE

SENSOR

VDCCM & H/U

B310

35

10

ECM

B136

27

35

B30

B20

BODY 

INTEGRATED UNIT

B280

B:

6

14

B170

B365

B40

CAN JOINT 
CONNEC-
TOR

CAN JOINT 
CONNECTOR

DATA LINK 

CONNECTOR

2

*

1

*

2

*

1

*

3

*

4

*

2

*

1

*

2

*

1

*

2

*

1

*

2

*

1

*

3

*

4

*

3

*

4

*

VDC

VDC

VDC

VDC

ABS

ABS

ABS

ABS

ABSCM & H/U

B301

26

11

VDC

ABS

ABS

TCM

B54

A:

4AT MODEL

5AT MODEL

B21

B20

A18

A17

B55

B:

VDC

*

1

*

2

*

3

*

4

: WITHOUT VDC

ABS

VDC

: TERMINAL No. OPTIONAL ARRANGEMENT 
  AMONG 1, 2, 3, 11, 12 AND 13
: TERMINAL No. OPTIONAL ARRANGEMENT 
  AMONG 8, 9, 10, 18, 19 AND 20
: TERMINAL No. OPTIONAL ARRANGEMENT 
  AMONG 1, 2, 5 AND 6
: TERMINAL No. OPTIONAL ARRANGEMENT 
  AMONG 3, 4, 7 AND 8

: WITH VDC

LAN(diag)-56

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

LAN SYSTEM (DIAGNOSTICS)

Step

Check

Yes

No

1

CHECK DTC.
Connect the Subaru Select Monitor and read all 
DTCs.

Is there any DTC other than for 
the body integrated unit?

Perform the diag-
nosis according to 
the DTC of other 
control modules.

Go to step 2.

2

CHECK DTC.
Check the DTC displayed in the body integrated 
unit.

Is the DTC displayed a current 
malfunction?

Check the connec-
tion of harness 
connectors. Go to 
step 3.

Go to step 4.

3

CHECK DTC.
Turn the ignition switch to OFF and read DTCs 
again.

Is the DTC displayed a current 
malfunction?

Replace the ECM. 
<Ref. to 
FU(H4DOTC)-52, 
REMOVAL, Engine 
Control Module 
(ECM).> <Ref. to 
FU(H6DO)-38,
REMOVAL, Engine 
Control Module 
(ECM).> <Ref. to 
FU(H4SO)-39, 
REMOVAL, Engine 
Control Module 
(ECM).>

Go to step 4.

4

CHECK CURRENT DATA.
Using the Subaru Select Monitor, display 
engine speed and vehicle speed signal from 
ECM, TCM, VDC/ABS and body integrated unit 
under the same conditions and compare data.

Do all data values match?

Temporary poor 
contact occurs. 
Perform the Clear 
Memory operation.

Go to step 5.

5

CHECK ECM.
Read the DTC of ECM using the Subaru Select 
Monitor. <Ref. to EN(H6DO)(diag)-43, OPERA-
TION, Read Diagnostic Trouble Code (DTC).>

Is DTC other than “CAN com-
munication” displayed?

Perform the diag-
nosis according to 
DTC.

Replace the body 
integrated unit. 
<Ref. to SL-56, 
REMOVAL, Body 
Integrated Unit.>

LAN(diag)-57

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

LAN SYSTEM (DIAGNOSTICS)

K: DTC U1212 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 crimping.
TROUBLE SYMPTOM:
• SPORT indicator light blinks.
• “Er HC” or “Er tC” is displayed in odo/trip meter. (Except for meter with MID)
WIRING DIAGRAM:

LAN00382

B40

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

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

B231

1 2 3 4

A: B54

16

10 11 12 13 14 15

25

24

30

9

8

7

17 18 19 20
28

21 22 23

29

32

31

1

2

3

4

5

6

27

26

33 34 35

B310

4 5 6 7 8 9

26 27 28 29 30

2 3

1

31 32 33 34 35 36

10 11

14 15 16 17 18 19

37 38 39 40

12 13

41 42 43 44 45 46

20 21

23

24

22

25

B230

1

2

3

4

B170

3 4

5 6

1 2

7 8

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

B365

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

C: B136

B:

B55

5

6

7

2

1

3

4

29

10 11 12 13 14 15

25

24

16

30

9

8

17 18 19

20
28

21 22 23

32

31

26 27

33

34 35

2

3

B230

YAW RATE 

SENSOR

B231

2

1

STEERING

ANGLE

SENSOR

VDCCM & H/U

B310

35

10

ECM

B136

27

35

B30

B20

BODY 

INTEGRATED UNIT

B280

B:

6

14

B170

B365

B40

CAN JOINT 
CONNEC-
TOR

CAN JOINT 
CONNECTOR

DATA LINK 

CONNECTOR

2

*

1

*

2

*

1

*

3

*

4

*

2

*

1

*

2

*

1

*

2

*

1

*

2

*

1

*

3

*

4

*

3

*

4

*

VDC

VDC

VDC

VDC

ABS

ABS

ABS

ABS

ABSCM & H/U

B301

26

11

VDC

ABS

ABS

TCM

B54

A:

4AT MODEL

5AT MODEL

B21

B20

A18

A17

B55

B:

VDC

*

1

*

2

*

3

*

4

: WITHOUT VDC

ABS

VDC

: TERMINAL No. OPTIONAL ARRANGEMENT 
  AMONG 1, 2, 3, 11, 12 AND 13
: TERMINAL No. OPTIONAL ARRANGEMENT 
  AMONG 8, 9, 10, 18, 19 AND 20
: TERMINAL No. OPTIONAL ARRANGEMENT 
  AMONG 1, 2, 5 AND 6
: TERMINAL No. OPTIONAL ARRANGEMENT 
  AMONG 3, 4, 7 AND 8

: WITH VDC

 

 

 

 

 

 

 

Content   ..  1178  1179  1180  1181   ..