Sentra Wagon FWD L4-1597cc 1.6L SOHC (E16i) (1988)
Power Steering Pressure Switch: Description and Operation
The power steering oil pressure switch is attached to the power steering high pressure tube and detects the power steering load, sending the load
signal to the E.C.U. The E.C.U. then sends the idle-up signal to the I.S.C. valve.