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Home >> Dodge and Ram >> 2009 >> Durango 4WD V8-4.7L >> Repair and Diagnosis >> Brakes and Traction Control >> Power Brake Assist >> Vacuum Pump >> Description and Operation >> Operation

Operation






OPERATION

The electric vacuum pump is used on the 5.7L HEV to provide vacuum to the active brake booster during periods of time when the engine is not running but vacuum is needed by the brake booster. The electric vacuum pump is relay controlled by the ABS module.

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