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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (Diagnosis - Automatic Transmission) >> Description & Operation >> Input Devices >> Power Steering Pressure Switch

Power Steering Pressure Switch

WARNING: This page is about a different car, the 2002 Ford Escape, 2001 Mazda Tribute, and 2001 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The Power Steering Pressure (PSP) switch signals the PCM when power steering pressure exceeds a specified limit. PCM will adjust idle speed to compensate for added load on engine. The increase in RPM is used as an input to PCM to adjust EPC pressure to transaxle. If PSP switch fails on, EPC will be high, and firm engagements and shifts, and harsh coast downshifts may occur. If PSP switch fails off, EPC pressure will be lower during increased loading of the power steering system.

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