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E 150 V8-4.6L SOHC VIN W (2004)

Sensors and Switches > Sensors and Switches - Steering and Suspension > Sensors and Switches - Steering > Power Steering Pressure Switch > Component Information > Description and Operation > Power Steering Pressure Switch > Page 2505

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Power Steering Pressure Switch: Description and Operation
Power Steering Pressure Sensor

POWER STEERING PRESSURE SENSOR

Power Steering Pressure (PSP) Sensor

The power steering pressure (PSP) sensor (Figure 46) monitors the hydraulic pressure within the power steering system. The PSP sensor voltage input to
the PCM will change as the hydraulic pressure changes. The PCM uses the input signal from the PSP sensor to compensate for additional loads on the
engine by adjusting the idle rpm and preventing engine stall during parking maneuvers. Also, the PSP sensor signals the PCM to adjust transmission
electronic pressure control (EPC) pressure during the increased engine load, for example during parking maneuvers.

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