Subaru Legacy (2005 year). Service manual — part 791

VDC(diag)-29

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

Warning Light Illumination Pattern

• RHD model

B310

i1

B16

1
2

B97

E

MAIN SBF

SBF-6

E

No.5

B16

B97

R1

R4

A3

A4

5

A8

16

1
2

1

2

B229

1 2

3 4

5 6 7 8 9 10

16

11

15

14

13

12

17

19

18

23

25

24

20

22

21

26

28

27

i10

2

1

3 4

6 7 8 9 10

22

21

20

19

18

17

16

15

14

13

12

11

5

1 2 3 4

5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20

B229

1 2

A:

BATTERY

IGNITION
SWITCH

BRAKE FLUID
LEVEL SWITCH

PARKING
BRAKE
SWITCH

BRAKE

WARNING

LIGHT

ABS

WARNING

LIGHT

20

35

B310

B36

i1

i10

A:

VDCCM & H/U

A8

A5

16

3

A7

4

1 2 3 4

11 12 13 14
27 28 29 30

15 16 17 18
31 32 33 34

19 20 21 22
35 36 37 38

23 24 25 26
39 40 41 42

5

6

7

8

9

10

VDC00318

VDC(diag)-30

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

Warning Light Illumination Pattern

Step

Check

Yes

No

1

CHECK OTHER LIGHTS TURN ON.
Turn the ignition switch to ON. (engine OFF)

Do other warning lights illumi-
nate?

Go to step 2.

Check the combi-
nation meter.

2

READ DTC.
Read the DTC. <Ref. to VDC(diag)-23, Read
Diagnostic Trouble Code (DTC).>

Is DTC displayed?

Perform the diag-
nosis according to
DTC.

Go to step 3.

3

CHECK GROUND SHORT CIRCUIT OF HAR-
NESS.
1) Turn the ignition switch to OFF.
2) Disconnect the connector (B310) from
VDCCM&H/U.
3) Disconnect the connector (i10) from combi-
nation meter.
4) Measure the resistance between
VDCCM&H/U connector and chassis ground.

Connector & terminal

(B310) No. 35 — Chassis ground:

Is the resistance more than 1
M

Ω?

Go to step 4.

Repair the har-
ness connector
between
VDCCM&H/U and
combination
meter.

4

CHECK VDCCM.
1) Connect the connector (B310) to
VDCCM&H/U.
2) Turn the ignition switch to ON.
3) Measure the resistance between the com-
bination meter connector and chassis ground
soon after the ignition switch is turned to ON
(within 1.5 seconds).

Connector & terminal

(i10) No. 5 — Chassis ground:

Is the resistance more than 1
M

Ω?

Check the combi-
nation meter.

Replace the
VDCCM&H/U.

VDC(diag)-31

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

Warning Light Illumination Pattern

D: ABS WARNING LIGHT DOES NOT GO OFF

DETECTING CONDITION:
• Defective combination meter
• Open circuit of harness
TROUBLE SYMPTOM:
When starting the engine, the ABS warning light is kept ON.
WIRING DIAGRAM:
• LHD model

B310

i1

B16

1
2

B38

E

MAIN SBF

SBF-6

E

No.5

B16

B97

R1

R4

A3

A4

5

1
2

1

2

B229

1 2

3 4

5 6 7 8 9 10

16

11

15

14

13

12

17

19

18

23

25

24

20

22

21

26

28

27

i10

2

1

3 4

6 7 8 9 10

22

21

20

19

18

17

16

15

14

13

12

11

5

1 2 3 4

5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20

B229

1 2

A:

BATTERY

IGNITION
SWITCH

BRAKE FLUID
LEVEL SWITCH

PARKING
BRAKE
SWITCH

BRAKE

WARNING

LIGHT

ABS

WARNING

LIGHT

20

35

B310

B38

i3

i10

A:

VDCCM & H/U

A7

1 2 3 4

11 12 13 14
27 28 29 30

15 16 17 18
31 32 33 34

19 20 21 22
35 36 37 38

23 24 25 26
39 40 41 42

5

6

7

8

9

10

20

9

16

B36

i1

A8

A5

B97

1 2 3

4 5 6 7

8 9 10 11 12 13 14 15 16

VDC00298

VDC(diag)-32

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

Warning Light Illumination Pattern

• RHD model

B310

i1

B16

1
2

B97

E

MAIN SBF

SBF-6

E

No.5

B16

B97

R1

R4

A3

A4

5

A8

16

1
2

1

2

B229

1 2

3 4

5 6 7 8 9 10

16

11

15

14

13

12

17

19

18

23

25

24

20

22

21

26

28

27

i10

2

1

3 4

6 7 8 9 10

22

21

20

19

18

17

16

15

14

13

12

11

5

1 2 3 4

5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20

B229

1 2

A:

BATTERY

IGNITION
SWITCH

BRAKE FLUID
LEVEL SWITCH

PARKING
BRAKE
SWITCH

BRAKE

WARNING

LIGHT

ABS

WARNING

LIGHT

20

35

B310

B36

i1

i10

A:

VDCCM & H/U

A8

A5

16

3

A7

4

1 2 3 4

11 12 13 14
27 28 29 30

15 16 17 18
31 32 33 34

19 20 21 22
35 36 37 38

23 24 25 26
39 40 41 42

5

6

7

8

9

10

VDC00318