3000GT SL V6-2972cc 3.0L DOHC MFI (1997)
Power Steering Pressure Switch: Description and Operation
The Power Steering Pressure Switch converts PRESENCE/ABSENCE of power steering load into LOW/HIGH voltage and inputs it to the Engine
Control Module, which then controls the Idle Air Control motor based on the signal.
The battery voltage in the ECM is applied through a resistor to the power steering pressure switch. Steering operation causes the power steering oil
pressure to increase, turning the switch on. as a result, grounding the signal from the ECM, causing the power steering pressure terminal voltage to
switch from HIGH to LOW.
