Bonneville V6-3800 3.8L (1991)
Power Steering Pressure Switch: Description and Operation
Pictorial View
The Power Steering Pressure Switch (PSPS) closes during high pressure power steering load situations. When the power steering switch is closed,
power to the A/C relay is shut off, resulting in air conditioning compressor clutch disengagement. A signal is also sent to the ECM. The ECM uses this
signal for idle speed control.