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-II Reference Value In Data Monitor Mode:

ECM Terminals And Reference Value:

EC-PST/SW-01:

EC-PST/SW-01 Connector View:

WIRING DIAGRAM

Steps 1 - 3:

Steps 4 - 6:

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 terminal 1 and ground.
If NG, replace power steering oil pressure switch.