1997 SUBARU LEGACY Service Repair Manual

Page 2897 of 3342

SUBARU LEGACY 1997  Service Repair Manual B: ABS WARNING LIGHT DOES NOT GO
OFF.
DIAGNOSIS:
ABS warning light circuit is open or shorted.
TROUBLE SYMPTOM:
When starting the engine and while ABS warning light is
kept ON.
WIRING DIAGRAM:
B4M12

Page 2898 of 3342

SUBARU LEGACY 1997  Service Repair Manual 7B1CHECK INSTALLATION OF ABSCM&H/U
CONNECTOR.
Turn ignition switch to OFF.
: Is ABSCM&H/U connector inserted into
ABSCM until the clamp locks onto it?
: Go to step7B2.
: Insert ABSCM&H/U connector int

Page 2899 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0430
7B4
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 2900 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M1237A
7B9
CHECK ABSCM&H/U.
Measure resistance between ABSCM&H/U terminals.
Terminals
No. 21—No. 23:
: Is the resistance more than 1 MΩ?
: Go to step7B10.
: Replace ABSCM&H/U.
B4M1236A
7B10
CHEC

Page 2901 of 3342

SUBARU LEGACY 1997  Service Repair Manual C: TROUBLE CODE DOES NOT APPEAR.
DIAGNOSIS:
Diagnosis circuit is open.
TROUBLE SYMPTOM:
The ABS warning light turns on or off normally but the
start code cannot be read out in the diagnostic mode.
W

Page 2902 of 3342

SUBARU LEGACY 1997  Service Repair Manual B4M0800A
7C1
CHECK DIAGNOSIS TERMINAL.
Measure resistance between diagnosis terminals (B81)
and chassis ground.
Terminals
Diagnosis terminal (A)—Chassis ground:
Diagnosis terminal (B)—Chassis grou

Page 2903 of 3342

SUBARU LEGACY 1997  Service Repair Manual 8. Diagnostics Chart with Trouble Code
by ABS Warning Light
A: LIST OF TROUBLE CODE
Trouble code Contents of diagnosis Ref. to
11Start code
Trouble code is shown after start code.
Only start code is

Page 2904 of 3342

SUBARU LEGACY 1997  Service Repair Manual B: TROUBLE CODE 21 (FRONT RH)
C: TROUBLE CODE 23 (FRONT LH)
D: TROUBLE CODE 25 (REAR RH)
E: TROUBLE CODE 27 (REAR LH)
—ABNORMAL ABS SENSOR (OPEN CIRCUIT
OR INPUT VOLTAGE TOO HIGH)—
DIAGNOSIS:
Fau