1997 SUBARU LEGACY Service Repair Manual

Page 2689 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0876A
8K18CHECK BATTERY SHORT IN CONTROL
SYSTEM HARNESS OF VALVE RELAY.
1) Turn ignition switch to ON.
2) Measure voltage between ABSCM connector and chas-
sis ground.
: Connector & terminal
(F49)

Page 2690 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0831B
8K20CHECK RESISTANCE OF OUTLET SOLE-
NOID VALVE.
Measure resistance between hydraulic unit connector ter-
minals.
: Connector & terminal
To (F9) No. 8—to (ABS1) No. 2
To (F9) No. 5—to (AB

Page 2691 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0881A
8K23
CHECK BATTERY SHORT OF HARNESS.
1) Disconnect connector from hydraulic unit.
2) Turn ignition switch to ON.
3) Measure voltage between ABSCM connector and chas-
sis ground.
: Connector &

Page 2692 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0882A
8K24
CHECK GROUND SHORT OF HARNESS.
Measure resistance between ABSCM connector and chas-
sis ground.
: Connector & terminal
(F49) No. 30—Chassis ground
(F49) No. 24—Chassis ground
(F49) N

Page 2693 of 3342

SUBARU LEGACY 1997  Service Repair Manual 8K26CHECK POOR CONTACT IN CONNEC-
TOR BETWEEN ABSCM AND HYDRAU-
LIC UNIT.
: Is there poor contact in connector between
ABSCM and hydraulic unit?
: Repair connector.
: Go to step8K27.
8K27
CHECK ABSCM.

Page 2694 of 3342

SUBARU LEGACY 1997  Service Repair Manual L: TROUBLE CODE 52
—ABNORMAL MOTOR AND/OR MOTOR
RELAY—
DIAGNOSIS:
Faulty motor
Faulty motor relay
Faulty harness connector
TROUBLE SYMPTOM:
ABS does not operate.
8L1.Check resistance of motor

Page 2695 of 3342

SUBARU LEGACY 1997  Service Repair Manual From the former page.
8L16.
Check battery short between relay box and
ABSCM.
8L17.Check ground short at ABSCM monitor
terminal.
8L18.Check battery short at ABSCM monitor
terminal.
8L19.Check motor gro

Page 2696 of 3342

SUBARU LEGACY 1997  Service Repair Manual WIRING DIAGRAM:
B4M1049
91
4-4cBRAKES [ABS 5.3 TYPE]
8. Diagnostics Chart with Trouble Code