1997 SUBARU LEGACY Service Repair Manual

Page 2937 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1250A
8U4
CHECK BATTERY SHORT OF HARNESS.
1) Turn ignition switch to ON.
2) Measure voltage between ABSCM&H/U connector and
chassis ground.
Connector & terminal
(F49) No. 3 (+)—Chassis ground (�)

Page 2938 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1252A
8U7
CHECK OPEN CIRCUIT OF HARNESS.
Measure voltage between ABSCM&H/U connector and
chassis ground.
Connector & terminal
(F49) No. 3 (+)—Chassis ground (�):
(F49) No. 31 (+)—Chassis ground

Page 2939 of 3342

SUBARU LEGACY 1997  Service Repair Manual V: TROUBLE CODE 51
—ABNORMAL VALVE RELAY—
DIAGNOSIS:
Faulty valve relay
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1253
63
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Tro

Page 2940 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1254A
8V1CHECK INPUT VOLTAGE OF
ABSCM&H/U.
1) Turn ignition switch to OFF.
2) Disconnect connector from ABSCM&H/U.
3) Run the engine at idle.
4) Measure voltage between ABSCM&H/U connector and
chas

Page 2941 of 3342

SUBARU LEGACY 1997  Service Repair Manual 8V4CHECK POOR CONTACT IN CONNEC-
TORS.
: Is there poor contact in connectors between
generator, battery and ABSCM&H/U? <Ref.
to FOREWORD [T3C1].>
: Repair connector.
: Go to step8V5.
8V5
CHECK ABSCM&H

Page 2942 of 3342

SUBARU LEGACY 1997  Service Repair Manual W: TROUBLE CODE 52
—ABNORMAL MOTOR AND/OR MOTOR
RELAY—
DIAGNOSIS:
Faulty motor
Faulty motor relay
Faulty harness connector
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1255
66
4-4

Page 2943 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1256A
8W1CHECK INPUT VOLTAGE OF
ABSCM&H/U.
1) Turn ignition switch to OFF.
2) Disconnect connector from ABSCM&H/U.
3) Turn ignition switch to ON.
4) Measure voltage between ABSCM&H/U connector and

Page 2944 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1234A
8W3CHECK INPUT VOLTAGE OF
ABSCM&H/U.
1) Run the engine at idle.
2) Measure voltage between ABSCM&H/U connector and
chassis ground.
Connector & terminal
(F49) No. 1 (+)—Chassis ground (�):
: