Subaru Legacy 2002 Service Manual page 2627

DIAGNOSTICS CHART WITH SELECT MONITOR
VDC (Diagnostics)
X: DTC 42 POWER SUPPLY VOLTAGE LOW
S005504J59
DIAGNOSIS:
¼ Power source voltage of the VDCCM is low.
TROUBLE SYMPTOM:
¼ ABS does not operate.
¼ VDC does not operate.
WIRING DIAGRAM:
B4M2322
VDC-168