Subaru Legacy 2002 Service Manual page 2561

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
VDC (Diagnostics)
AI: DTC 49 ABNORMAL ENGINE SPEED SIGNAL
S005522J32
DIAGNOSIS:
¼ Engine speed signal line is broken or short circuited.
TROUBLE SYMPTOM:
¼ VDC does not operate.
WIRING DIAGRAM:
B4M2524
VDC-102