Roadmaster Estate Wagon V8-350 5.7L VIN P SFI (1996)
Power Steering Pressure Switch: Description and Operation
LEGEND
(1) Engine Coolant Pump
(2) Engine Coolant Temp. Sensor Electrical Connector
(3) AIR Pump
(4) AIR Pump Electrical Connector
(5) Power Steering Pressure Switch Electrical Connector
(6) Power Steering Pressure Switch
(7) Engine Coolant Temperature Sensor
DESCRIPTION
This signal is used by the PCM to increase the idle speed when the vehicle is in a parking maneuver. The PSP switch is a normally open switch.
When the power steering pressure is high, the switch will close. When the switch closes, the PCM will increase idle speed to compensate for the
additional load.
