Subaru Legacy 2002 Service Manual page 2365

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
ABS (Diagnostics)
V: DTC 42 SOURCE VOLTAGE IS ABNORMAL.
S006522I47
DIAGNOSIS:
¼ Power source voltage of the ABSCM&H/U is low or high.
TROUBLE SYMPTOM:
¼ ABS does not operate.
WIRING DIAGRAM:
B4M2334
ABS-64