Subaru Legacy 2002 Service Manual page 2455

DIAGNOSTICS CHART WITH SUBARU SELECT MONITOR
ABS (Diagnostics)
AH: DTC 56 DETECTION OF G SENSOR STICK
S006583I85
DIAGNOSIS:
¼ Faulty G sensor output voltage
TROUBLE SYMPTOM:
¼ ABS does not operate.
WIRING DIAGRAM:
B4M2519
ABS-154