Subaru Legacy (2005 year). Service manual — part 767

ABS(diag)-33

ABS (DIAGNOSTICS)

ABS Warning Light / Brake Warning Light Illumination Pattern

• RHD model

ABS00684

BATTERY

IGNITION
SWITCH

MAIN SBF

SBF-6

No.5

No.33

A:

i10

COMBINATION
METER

E

E

B301

4

5

18

15

22

ABSCM & H/U

7

8

ABS

WARNING

LIGHT

BRAKE

WARNING

LIGHT

i1

B36

3

1 2 3 4 5 6 7 8 9 10 11

16 17 18 19 20 21 22 23 24 25 26

13

12

15

14

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

A:

B301

i1

4

3

ABS(diag)-34

ABS (DIAGNOSTICS)

ABS Warning Light / Brake Warning Light Illumination Pattern

Step

Check

Yes

No

1

READ DTC.
Read the DTC. <Ref. to ABS(diag)-24, Read
Diagnostic Trouble Code (DTC).>

Is DTC displayed?

Perform the diag-
nosis according to
DTC.

Go to step 2.

2

CHECK WIRING HARNESS.
1) Turn the ignition switch to OFF.
2) Disconnect the connector (B301) from
ABSCM&H/U.
3) Disconnect the connector (i10) from the
combination meter.
4) Measure the resistance between
ABSCM&H/U connector and combination
meter connector.

Connector & terminal

(B301) No. 22 — (i10) No. 5:

Is the resistance less than 0.5
Ω?

Go to step 3.

Repair the har-
ness and connec-
tor between
ABSCM&H/U and
combination
meter.

3

CHECK POOR CONTACT IN CONNECTOR.
Check poor contact in all connectors.

Is there poor contact?

Repair the con-
nector.

Go to step 4.

4

CHECK ABSCM.
1) Connect the connector (B301) to the
ABSCM&H/U.
2) Turn the ignition switch to ON.
3) Measure the resistance between combina-
tion meter connector and chassis ground.

Connector & terminal

(i10) No. 5 — Chassis ground:

Is the resistance less than 0.5
Ω?

Check the combi-
nation meter.

Replace the
ABSCM only.
<Ref. to ABS-8,
REPLACEMENT,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>

ABS(diag)-35

ABS (DIAGNOSTICS)

ABS Warning Light / Brake Warning Light Illumination Pattern

D: BRAKE WARNING LIGHT DOES NOT GO OFF

DETECTING CONDITION:
• Brake warning light circuit is shorted.
• Defective sensor/connector
TROUBLE SYMPTOM:
After starting the engine, the brake warning light is kept on though the parking lever is released.
WIRING DIAGRAM:
• LHD model

B301

i1

B16

1
2

B38

E

MAIN SBF

SBF-6

E

No.5

8

B301

B38

B16

i3

B97

R1

R4

i10

A:

ABSCM & H/U

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

1 2 3 4 5 6 7 8 9 10 11

16 17 18 19 20 21 22 23 24 25 26

13

12

15

14

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

i10

A:

BATTERY

IGNITION
SWITCH

BRAKE FLUID
LEVEL SWITCH

PARKING
BRAKE
SWITCH

BRAKE

WARNING

LIGHT

20

B36

i1

16

A7

A8

B97

1 2 3

4 5 6 7

8 9 10 11 12 13 14 15 16

ABS00594

ABS(diag)-36

ABS (DIAGNOSTICS)

ABS Warning Light / Brake Warning Light Illumination Pattern

• RHD model

B301

i1

B16

1
2

B97

E

MAIN SBF

SBF-6

E

No.5

8

B301

B36

B16

i1

B97

R1

R4

i10

A:

ABSCM & H/U

A3

A4

5

A8

A7

16

4

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

1 2 3 4 5 6 7 8 9 10 11

16 17 18 19 20 21 22 23 24 25 26

13

12

15

14

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

BRAKE

WARNING

LIGHT

PARKING
BRAKE
SWITCH

ABS00685