1997 SUBARU LEGACY Service Repair Manual

Page 2969 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0430
10C1
CHECK GENERATOR.
1) Start the engine.
2) Idle the engine.
3) Measure voltage between generator and chassis
ground.
Terminal
Generator B terminal (+)—Chassis ground (�):
: Is the voltage

Page 2970 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1234A
10C5CHECK POWER SUPPLY OF
ABSCM&H/U.
1) Disconnect connector from ABSCM&H/U.
2) Start engine.
3) Idle the engine.
4) Measure voltage between ABSCM&H/U connector and
chassis ground.
Connector

Page 2971 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1267A
10C7CHECK HARNESS/CONNECTOR
BETWEEN ABSCM&H/U AND DATA LINK
CONNECTOR.
1) Turn ignition switch OFF.
2) Measure resistance between ABSCM&H/U connector
and data link connector.
Connector & term

Page 2972 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0944
D: NO TROUBLE
—ALTHOUGH NO TROUBLE APPEARS ON
THE SELECT MONITOR DISPLAY, THE ABS
WARNING LIGHT REMAINS ON—
DIAGNOSIS:
ABS warning light circuit is shorted.
TROUBLE SYMPTOM:
ABS warning

Page 2973 of 3342

SUBARU LEGACY 1997  Service Repair Manual 10D1
CHECK WIRING HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector (F2) from connector (B100).
3) Turn ignition switch to ON.
: Does the ABS warning light remain off?
: Go to step10D2.

Page 2974 of 3342

SUBARU LEGACY 1997  Service Repair Manual 10D6CHECK POOR CONTACT IN ABSCM&H/U
CONNECTOR.
: Is there poor contact in ABSCM&H/U con-
nector? <Ref. to FOREWORD [T3C1].>
: Repair connector.
: Replace ABSCM&H/U.
98
4-4dBRAKES [ABS 5.3i TYPE]
10. D

Page 2975 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0945
E: TROUBLE CODE 21 FR. SS HARD
—ABNORMAL FRONT RH ABS SENSOR
(OPEN CIRCUIT OR INPUT VOLTAGE TOO
HIGH)—
B4M0946
F: TROUBLE CODE 23 FL. SS HARD
—ABNORMAL FRONT LH ABS SENSOR
(OPEN CIRCUIT

Page 2976 of 3342

SUBARU LEGACY 1997  Service Repair Manual DIAGNOSIS:
Faulty ABS sensor (Broken wire, input voltage too high)
Faulty harness connector
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1238
100
4-4dBRAKES [ABS 5.3i TYPE]
10. Diagnos