Subaru Legacy (2005 year). Service manual — part 766
ABS(diag)-29
ABS (DIAGNOSTICS)
ABS Warning Light / Brake Warning Light Illumination Pattern
B: ABS WARNING LIGHT DOES NOT COME ON
DETECTING CONDITION:
• Defective combination meter
• Defective harness
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), ABS warning light does not come on.
WIRING DIAGRAM:
• LHD model
ABS00593
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
i3
B38
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
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
20
9
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
B38
ABS(diag)-30
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)-31
ABS (DIAGNOSTICS)
ABS Warning Light / Brake Warning Light Illumination Pattern
Step
Check
Yes
No
1
CHECK ILLUMINATION OF OTHER LIGHTS.
Turn the ignition switch to ON. (engine OFF)
Do other warning lights illumi-
nate?
Check the combi-
nation meter.
2
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.
3
CHECK GROUND SHORT OF 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 chassis ground.
Connector & terminal
(B301) No. 22 — Chassis ground:
Is the resistance more than 1
M
Ω?
Repair the har-
ness and connec-
tor between
ABSCM&H/U and
combination
meter.
4
CHECK ABSCM.
1) Connect the connector (B301) to the
ABSCM&H/U.
2) Turn the ignition to ON.
3) Immediately after turning ignition switch to
ON (within 1.5 seconds), measure the resis-
tance between the combination meter connec-
tor and chassis ground.
Connector & terminal
(i10) No. 5 — Chassis ground:
Is the resistance more than 1
M
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)-32
ABS (DIAGNOSTICS)
ABS Warning Light / Brake Warning Light Illumination Pattern
C: ABS WARNING LIGHT DOES NOT GO OFF
DETECTING CONDITION:
• Defective combination meter
• Open in harness
TROUBLE SYMPTOM:
When starting the engine, the ABS warning light is kept on.
WIRING DIAGRAM:
• LHD model
ABS00593
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
i3
B38
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
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
20
9
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
B38
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