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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls - Description & Operation - (Hybrid)) >> Powertrain Control Hardware >> Powertrain Control Module (PCM) Power and Ground Signals >> Vehicle Power (VPWR)

Vehicle Power (VPWR)

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VPWR is the primary source of PCM power. VPWR is switched through the PCM power relay and is controlled by the PCM.