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Oldsmobile Workshop Service and Repair Manuals

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P/S - Revised Pressure Switch Schematic & Diagnostics|Page 694 > < P/S - Revised Pressure Switch Schematic & Diagnostics|Page 692

Custom Cruiser RWD V8-350 5.7L (1992)

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Power Steering Pressure Switch: Description and Operation

Wiring Diagram For P/S Switch

The Power Steering Pressure Switch (PSPS) opens during high pressure power steering situations. When the power steering switch is open, 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. A Scan tool should read "off" normally, and "on" with high pressure.

P/S - Revised Pressure Switch Schematic & Diagnostics|Page 694 > < P/S - Revised Pressure Switch Schematic & Diagnostics|Page 692