SUBARU LEGACY 1996 Service Repair Manual
Page 2311 of 2890
B4M0495
3. FR.SS OVER
—Excessive speed of front right ABS sensor signal—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
1. Check ABS sensor mechanical trouble.
<Ref. to 4-4b [T8C1].>
OK
Not OK
Repair ABS sensor/tone wheel.
2. Check ground circuit of ABS/TCS control
module.
<Ref. to 4-4b [T8C2].>
OK
Not OK
Repair harness/connector.
3. Check sources of signal noise.
<Ref. to 4-4b [T8C5].>
OK
Not OK
Repair noise sources.
Replace ABS/TCS control module.
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Page 2312 of 2890
B4M0496
F: TROUBLE CODE 23
1. FL.SS OPEN
—Faulty front left ABS sensor (Open circuit)—
DIAGNOSIS:
Faulty ABS sensor
Faulty harness and connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
OPEN.
<Ref. to 4-4b [T10D1].>
B4M0497
2. FL.SS SHORT
—Faulty front left ABS sensor (Short circuit)—
DIAGNOSIS:
Faulty ABS sensor
Faulty harness and connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
SHORT.
<Ref. to 4-4b [T10D2].>
101
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Page 2313 of 2890
B4M0498
G: TROUBLE CODE 24
1. FL.SS W.SPEED
—Irregular signals from front left ABS sensor—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
W.SPEED.
<Ref. to 4-4b [T10E1].>
B4M0499
2. FL.SS OR MV
—Irregular signals from front left ABS sensor in
decompressing mode—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty hydraulic unit
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS OR
MV.
<Ref. to 4-4b [T10E2].>
B4M0500
3. FL.SS OVER
—Excessive speed of front left ABS sensor signal—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
OVER.
<Ref. to 4-4b [T10E3].>
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Page 2314 of 2890
B4M0501
H: TROUBLE CODE 25
1. RR.SS OPEN
—Faulty rear right ABS sensor (Open circuit)—
DIAGNOSIS:
Faulty ABS sensor
Faulty harness and connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
OPEN.
<Ref. to 4-4b [T10D1].>
B4M0502
2. RR.SS SHORT
—Faulty rear right ABS sensor (Short circuit)—
DIAGNOSIS:
Faulty ABS sensor
Faulty harness and connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
SHORT.
<Ref. to 4-4b [T10D2].>
103
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Page 2315 of 2890
B4M0503
I: TROUBLE CODE 26
1. RR.SS W.SPEED
—Irregular signals from rear right ABS sensor—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
W.SPEED.
<Ref. to 4-4b [T10E1].>
B4M0504
2. RR.SS OR MV
—Irregular signals from rear right ABS sensor in
decompressing mode—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty hydraulic unit
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS OR
MV.
<Ref. to 4-4b [T10E2].>
B4M0505
3. RR.SS OVER
—Excessive speed of rear right ABS sensor signal—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
OVER.
<Ref. to 4-4b [T10E3].>
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Page 2316 of 2890
B4M0506
J: TROUBLE CODE 27
1. RL.SS OPEN
—Faulty rear left ABS sensor (Open circuit)—
DIAGNOSIS:
Faulty ABS sensor
Faulty harness and connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
OPEN.
<Ref. to 4-4b [T10D1].>
B4M0507
2. RL.SS SHORT
—Faulty rear left ABS sensor (Short circuit)—
DIAGNOSIS:
Faulty ABS sensor
Faulty harness and connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
SHORT.
<Ref. to 4-4b [T10D2].>
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Page 2317 of 2890
B4M0508
K: TROUBLE CODE 28
1. RL.SS W.SPEED
—Irregular signals from rear left ABS sensor—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
W.SPEED.
<Ref. to 4-4b [T10E1].>
B4M0509
2. RL.SS OR MV
—Irregular signals from rear left ABS sensor in
decompressing mode—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty hydraulic unit
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS OR
MV.
<Ref. to 4-4b [T10E2].>
B4M0510
3. RL.SS OVER
—Excessive speed of rear left ABS sensor signal—
DIAGNOSIS:
Faulty ABS sensor signal (noise, irregular signal, etc.)
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
NOTE:
The procedures used are the same as those for FR.SS
OVER.
<Ref. to 4-4b [T10E3].>
106
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Page 2318 of 2890
B4M0511
L: TROUBLE CODE 31
FR.IN VALVE
—Faulty front right inlet solenoid valve—
DIAGNOSIS:
Faulty harness/connector
Faulty solenoid valve in hydraulic unit
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
ABS sequence control does not operate.
TCS sequence control does not operate.
Air bleeding mode does not operate.
1. Check resistance of solenoid valve.
<Ref. to 4-4b [T8D1].>
OK
Not OK
Replace hydraulic unit.
2. Check body short of solenoid valve.
<Ref. to 4-4b [T8D2].>
OK
Not OK
Replace hydraulic unit.
3. Check body short of harness.
<Ref. to 4-4b [T8D3].>
OK
Not OK
Repair harness.
4. Check harness between ABS/TCS control
module and hydraulic unit.
<Ref. to 4-4b [T8D4].>
OK
Not OK
Repair harness/connector.
Replace ABS/TCS control module.
107
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Page 2319 of 2890
B4M0512
M: TROUBLE CODE 32
FR.OUT VALVE
—Faulty front right outlet solenoid valve—
DIAGNOSIS:
Faulty harness/connector
Faulty solenoid valve in hydraulic unit
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
ABS sequence control does not operate.
TCS sequence control does not operate.
Air bleeding mode does not operate.
1. Check resistance of solenoid valve.
<Ref. to 4-4b [T8E1].>
OK
Not OK
Replace hydraulic unit.
2. Check body short of solenoid valve.
<Ref. to 4-4b [T8E2].>
OK
Not OK
Replace hydraulic unit.
3. Check body short of harness.
<Ref. to 4-4b [T8E3].>
OK
Not OK
Repair harness.
4. Check harness between ABS/TCS control
module and hydraulic unit.
<Ref. to 4-4b [T8E4].>
OK
Not OK
Repair harness/connector.
Replace ABS/TCS control module.
B4M0513
N: TROUBLE CODE 33
FL.IN VALVE
—Faulty front left inlet solenoid valve—
DIAGNOSIS:
Faulty harness/connector
Faulty solenoid valve in hydraulic unit
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
ABS sequence control does not operate.
TCS sequence control does not operate.
Air bleeding mode does not operate.
NOTE:
The procedures used are the same as those for FR.IN
VA LV E .
<Ref. to 4-4b [T10L0].>
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Page 2320 of 2890
B4M0514
O: TROUBLE CODE 34
FL.OUT VALVE
—Faulty front left outlet solenoid valve—
DIAGNOSIS:
Faulty harness/connector
Faulty solenoid valve in hydraulic unit
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
ABS sequence control does not operate.
TCS sequence control does not operate.
Air bleeding mode does not operate.
NOTE:
The procedures used are the same as those for FR.OUT
VA LV E .
<Ref. to 4-4b [T10M0].>
B4M0515
P: TROUBLE CODE 35
RR.IN VALVE
—Faulty rear right inlet solenoid valve—
DIAGNOSIS:
Faulty harness/connector
Faulty solenoid valve in hydraulic unit
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
ABS sequence control does not operate.
TCS sequence control does not operate.
Air bleeding mode does not operate.
NOTE:
The procedures used are the same as those for FR.IN
VA LV E .
<Ref. to 4-4b [T10L0].>
109
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