1997 SUBARU LEGACY Service Repair Manual

Page 2929 of 3342

SUBARU LEGACY 1997  Service Repair Manual S: TROUBLE CODE 41
—ABNORMAL ABS CONTROL MODULE—
DIAGNOSIS:
Faulty ABSCM&H/U.
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1246
53
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart wi

Page 2930 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1243A
8S1CHECK GROUND CIRCUIT OF
ABSCM&H/U.
1) Turn ignition switch to OFF.
2) Disconnect connector from ABSCM&H/U.
3) Measure resistance between ABSCM&H/U and chassis
ground.
Connector & terminal

Page 2931 of 3342

SUBARU LEGACY 1997  Service Repair Manual 8S6CHECK ANY OTHER TROUBLE CODES
APPEARANCE.
: Are other trouble codes being output?
: Proceed with the diagnosis corresponding to the
trouble code.
: A temporary poor contact.
55
4-4dBRAKES [ABS 5.3i

Page 2932 of 3342

SUBARU LEGACY 1997  Service Repair Manual T: TROUBLE CODE 42
—SOURCE VOLTAGE IS ABNORMAL.—
DIAGNOSIS:
Power source voltage of the ABSCM&H/U is low or high.
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1245
56
4-4dBRAKES [AB

Page 2933 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0430
8T1
CHECK GENERATOR.
1) Start engine.
2) Idling after warm-up.
3) Measure voltage between generator B terminal and
chassis ground.
Terminal
Generator B terminal—Chassis ground:
: Is the volt

Page 2934 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1243A
8T4CHECK GROUND CIRCUIT OF
ABSCM&H/U.
1) Turn ignition switch to OFF.
2) Measure resistance between ABSCM&H/U connector
and chassis ground.
Connector & terminal
(F49) No. 23—Chassis ground:

Page 2935 of 3342

SUBARU LEGACY 1997  Service Repair Manual U: TROUBLE CODE 44
—A COMBINATION OF AT CONTROL
ABNORMAL—
DIAGNOSIS:
Combination of AT control faults
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1247
59
4-4dBRAKES [ABS 5.3i TYPE]

Page 2936 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1248A
8U1CHECK SPECIFICATIONS OF THE
ABSCM.
Check specifications of the mark to the ABSCM&H/U.
Mark Model
C3 AWD AT
C4 AWD MT
: Is an ABSCM&H/U for AT model installed on
a MT model?
: Replace ABSCM