Power Steering Oil Pressure Switch

Component Description
The power steering oil pressure switch is attached to the power steering high-pressure tube and detects a power steering load. When a power steering load is detected, it signals the ECM. The ECM adjusts the IACV-AAC valve to increase the idle speed and adjust for the increased load.

CONSULT Reference Value In Data Monitor Mode:

CONSULT Reference Value in Data Monitor Mode
Specification data are reference values.

ECM Terminals And Reference Value:

ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and 32 (ECM ground).

EC-PST/SW-01:

Wiring Diagram

Main Harness, Engine Room, And Body Harness Connector Views:

Steps 1 - 2:

Steps 3 - 4:

Steps 5 - 8:

Diagnostic Procedure

Component Inspection




POWER STEERING OIL PRESSURE SWITCH
1. Disconnect power steering oil pressure switch harness connector then start engine.
2. Check continuity between terminals 1 and 2.




If NG, replace power steering oil pressure switch.