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Home >> Infiniti >> 1993 >> Q45 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Power Steering Oil Pressure Switch
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Power Steering Oil Pressure Switch

This switch is attached to power steering high pressure line and detects power steering load. When a powering steering load is detected a signal is sent to ECM. ECM sends an idle-up signal to Idle Air Control Valve (IACV)-Auxiliary Air Control (AAC) Valve to increase idle speed.

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