Your Vehicle: 2001 Ford Escort ZX2 L4-2.0L DOHC VIN 3
Vehicle » Steering and Suspension » Sensors and Switches - Steering and Suspension » Sensors and Switches - Steering » Power Steering Pressure Switch » Description and Operation » Power Steering Pressure Switch  
  Power Steering Pressure Switch  


Power Steering Pressure (PSP) Switch

The Power Steering Pressure (PSP) switch (Figure 38) monitors the hydraulic pressure within the power steering system. The PSP switch is a normally closed switch that opens as the hydraulic pressure increases. The PCM uses the input signal from the PSP switch to compensate for additional loads on the engine by adjusting the idle rpm and preventing engine stall during parking maneuvers. Also, the PSP switch signals the PCM to adjust transmission Electronic Pressure Control (EPC) pressure during the increased engine load, for example during parking maneuvers.