Page 1789 of 2248
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.
OK
Not OK
Replace hydraulic unit.
2. Check body short of solenoid valve.
OK
Not OK
Replace hydraulic unit.
3. Check body short of harness.
OK
Not OK
Repair harness.
4. Check harness between ABS/TCS control
module and hydraulic unit.
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 .
108
4-4bBRAKES
10. Diagnostic Chart with Select Monitor
Page 1790 of 2248
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 .
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 .
109
4-4bBRAKES
10. Diagnostic Chart with Select Monitor
Page 1791 of 2248
B4M0516
Q: TROUBLE CODE 36
RR.OUT VALVE
—Faulty rear 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.
NOTE:
The procedures used are the same as those for FR.OUT
VA LV E .
B4M0517
R: TROUBLE CODE 37
RL.IN VALVE
—Faulty rear 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 .
11 0
4-4bBRAKES
10. Diagnostic Chart with Select Monitor
Page 1792 of 2248
B4M0518
S: TROUBLE CODE 38
RL.OUT VALVE
—Faulty rear 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 .
B4M0519
T: TROUBLE CODE 41
ECU
—Faulty ABS/TCS control module—
DIAGNOSIS:
Faulty ABS/TCS control module
Faulty harness/connector
TROUBLE SYMPTOM:
ABS does not operate.
TCS does not operate.
1. Check ground circuit of ABS/TCS control
module.
OK
Not OK
Repair harness/connector.
2. Check harness connectors between power
supply generator, battery and ABS/TCS con-
trol module.
OK
Not OK
Repair harness/connector.
3. Check sources of signal noise.
OK
Not OK
Repair noise sources.
Replace ABS/TCS control module.
111
4-4bBRAKES
10. Diagnostic Chart with Select Monitor
Page 1797 of 2248
B4M0524
X: TROUBLE CODE 52
1. MOTOR ON
—Motor relay ON malfunction—
DIAGNOSIS:
Faulty motor relay
Faulty motor
Faulty motor sensor
Faulty harness
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS does not operate.
TCS does not operate.
1. Check body short of harness.
OK
Not OK
Repair harness.
2. Check motor operation.
OK
Not OK
Replace motor relay.
3. Check body short of motor sensor.
OK
Not OK
Replace hydraulic unit.
4. Check body short of motor sensor harness.
OK
Not OK
Repair harness.
Replace ABS/TCS control module.
11 6
4-4bBRAKES
10. Diagnostic Chart with Select Monitor
Page 1798 of 2248
B4M0525
2. MOTOR OFF
—Motor relay OFF malfunction—
DIAGNOSIS:
Faulty motor relay
Faulty motor
Faulty motor sensor
Faulty harness/connector
Faulty ABS/TCS control module
TROUBLE SYMPTOM:
ABS and TCS do not operate.
1. Check resistance of motor relay.
OK
Not OK
Replace motor relay.
2. Check input voltage of motor relay.
OK
Not OK
Repair harness/connector.
3. Check harness between ABS/TCS control
module and motor relay.
OK
Not OK
Repair harness/connector.
4. Check motor operation.
OK
Not OK
Go to step 9.
5. Check resistance of motor sensor.
OK
Not OK
Replace hydraulic unit.
6. Check body short of motor sensor.
OK
Not OK
Replace hydraulic unit.
7. Check harness between ABS/TCS control
module and motor sensor.
OK
Not OK
Repair harness/connector.
8. Check body short of motor sensor harness.
OK
Not OK
Repair harness.
Replace ABS/TCS control module.
11 7
4-4bBRAKES
10. Diagnostic Chart with Select Monitor
Page 1799 of 2248
9. Check contact point of motor relay.
OK
Not OK
Replace motor relay.
10. Check harness between motor and motor
relay.
OK
Not OK
Repair harness/connector.
11. Check body short of motor harness.
OK
Not OK
Repair harness.
12. Check ground circuit of motor.
OK
Not OK
Repair harness/connector.
Replace hydraulic unit.
NOTE:
The check can also be made by analyzing the sensor out-
put signal with oscilloscope during the TCS sequence con-
trol operation. If the ECM female connector end gives cor-
rect value, skip steps 5 through 8.
If not, operate the TCS sequence control again and mea-
sure the value at motor sensor male connector end, with
the motor sensor connector disconnected. If the value is
OK, proceed with steps 7 through 8 above.
11 8
4-4bBRAKES
10. Diagnostic Chart with Select Monitor
Page 1803 of 2248
B4M0529
4. B.SW SOFT (P)
—Comparison between stroke sensor and pump
output—
DIAGNOSIS:
Faulty stroke sensor
Faulty harness/connector
Faulty pump unit in hydraulic unit
Faulty stop light switch
Faulty ABS/TCS control module
NOTE:
Operate the function F09 in select monitor TCS mode, and
read the sensor output step.
If system is normal, the output reading is 1 when brake
pedal is not depressed, and it changes from 2 to 3, 4 and
5 in accordance with the brake pedal depressing. If so, skip
check steps 2 through 4.
1. Check correct installation of stroke sensor.
OK
Not OK
Repair stroke sensor.
2. Check resistance of stroke sensor.
OK
Not OK
Replace stroke sensor.
3. Check stroke sensor operation.
OK
Not OK
Replace stroke sensor.
4. Check harness between stroke sensor and
ABS/TCS control module.
OK
Not OK
Repair harness/connector.
5. Check pump unit operation.
OK
Not OK
Replace hydraulic unit.
Replace ABS/TCS control module.
122
4-4bBRAKES
10. Diagnostic Chart with Select Monitor
![SUBARU LEGACY 1995 Service Repair Manual 9. Check contact point of motor relay.
<Ref. to 4-4b [T8J10].>
OK
Not OK
Replace motor relay.
10. Check harness between motor and motor
relay.
<Ref. to 4-4b [T8J11].>
OK
Not OK
Repair harness/connec](/manual-img/17/57432/w960_57432-1798.png "SUBARU LEGACY 1995 Service Repair Manual 9. Check contact point of motor relay.
<Ref. to 4-4b [T8J10].>
OK
Not OK
Replace motor relay.
10. Check harness between motor and motor
relay.
<Ref. to 4-4b [T8J11].>
OK
Not OK
Repair harness/connec")