Circulation Pump Diode Connector End View

CIRCULATION PUMP DIODE

Courtesy of DAIMLERCHRYSLER CORP.
CAV	CIRCUIT	FUNCTION
3	18DG/RD	CIRCULATION PUMP RELAY OUTPUT
4	18DG/BK (CABIN HEATER MODULE)	CIRCULATION PUMP RELAY OUTPUT
4	18BK (EXCEPT PROGRAM TIMER)	FUSED OPTIONAL EQUIPMENT RELAY OUTPUT