1997 SUBARU LEGACY Service Repair Manual

Page 3025 of 3342

SUBARU LEGACY 1997  Service Repair Manual 10AA4
CHECK ABSCM&H/U.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the trouble code.
: Is the same trouble code as in the current
diagnosis still being outp

Page 3026 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0802
AB: TROUBLE CODE 51 V. RELAY ON
—VALVE RELAY ON FAILURE—
DIAGNOSIS:
Faulty valve relay
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1253
150
4-4dBRAKES [ABS 5.3i TYPE]
10. D

Page 3027 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1272A
10AB1
CHECK VALVE RELAY IN ABSCM&H/U.
Measure resistance between ABSCM&H/U terminals.
Terminals
No. 23 (+)—No. 24 (�):
: Is the resistance more than 1 MΩ?
: Go to step10AB2.
: Replace ABS

Page 3028 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0969
AC: TROUBLE CODE 52 M. RELAY OPEN
—OPEN CIRCUIT OF MOTOR RELAY—
DIAGNOSIS:
Faulty motor
Faulty motor relay
Faulty harness connector
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRA

Page 3029 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1256A
10AC1CHECK 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 an

Page 3030 of 3342

SUBARU LEGACY 1997  Service Repair Manual 10AC4CHECK POOR CONTACT IN CONNEC-
TORS.
Turn ignition switch to OFF.
: Is there poor contact in connector between
hydraclic unit, relay box and ABSCM&H/U?
<Ref. to FOREWORD [T3C1].>
: Repair connecto

Page 3031 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0970
AD: TROUBLE CODE 52 M. RELAY ON
—MOTOR RELAY ON FAILURE—
DIAGNOSIS:
Faulty motor
Faulty motor relay
Faulty harness connector
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
B4M1

Page 3032 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1270A
10AD1
CHECK MOTOR RELAY IN ABSCM&H/U.
Measure resistance between ABSCM&H/U terminals.
Terminals
No. 25—No. 26:
: Is the resistance more than 1 MΩ?
: Go to step10AD2.
: Replace ABSCM&H/U.