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Home >> Saturn Truck >> 2002 >> VUE V6-3.0L VIN B >> Repair and Diagnosis >> Heating and Air Conditioning >> Description and Operation >> Electronic Compressor Control Logic >> Auxiliary Water Pump Control

Auxiliary Water Pump Control

HEATING SUPPORT
The auxiliary water pump provides heating support during engine warmup. Heating support is enabled when the engine speed is below 1800 rpm and the coolant temperature is between 0°C (32°F) and 82°C (179°F).

AFTER RUN
The auxiliary water pump will run when the engine is shutdown under extreme hot conditions. Enabled when the engine shutdown coolant temperature exceeds 105°C (221°F). Disabled when the coolant temperature drops below 95°C (203°F) or after a maximum of 5 minutes run time.

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