Eclipse L4-1795cc 1.8L SOHC (1990)
Power Steering Pressure Switch: Description and Operation
Power Steering Load Switch Circuit
The P/S load switch, located on the P/S pump, is used to provide a signal to the ECU when there is steering load. The ECU uses this information for idle
speed control. When pump output pressure exceeds a preset level, the switch closes, completing the circuit to ground.