9-5 (9600) L4-2.3L Turbo (2007)
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Auxiliary Water Pump: Description and Operation
Circulation Pump
Cars with parking heater are equipped with a circulation pump for the parking heater. The aim is to achieve and even flow through the heat exchanger
when the parking heater is active.
The circulation pump is supplied from +30 via fuse 8 and is controlled on the ground side from the control module's K1 pin 15.
The control module starts the pump when the engine is on or when the parking heater is active.
Programming
