Vanden Plas (X308) V8-4.0L (AJ27) (2000)
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Auxiliary Water Pump: Description and Operation
Auxiliary Water Pump Assembly
Heater System Components
Located in the same area as the water valve, the water pump continually circulates coolant through the heater matrix except when the conditions below
apply:
The engine coolant is below 16° C.
The ignition is OFF.
Under engine stall conditions, when ignition is ON.
Control panel OFF
