Power Steering Pressure Switch: Testing and Inspection

POWER STEERING PRESSURE (PSP) SWITCH




The power steering oil pressure switch senses the power steering load and inputs it to PCM, which then adjusts the idle speed control motor to maintain idle speed when the power steering pump puts a load on the engine.

Circuit Diagram:

Using HI-Scan (PRO):

TERMINAL INSPECTION PROCEDURES
Refer to P0551 DTC inspection procedures.