Power Steering Oil Pressure Switch

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.







DIAGNOSTIC PROCEDURE

EC-PST/SW-01 Power Steering Oil Power Switch:

WIRING DIAGRAM

COMPONENT INSPECTION
1. Disconnect power steering oil pressure switch harness connector then start engine.




2. Check continuity between terminals (1) and (2).

Conditions / Continuity
Steering wheel being turned / Yes
Steering wheel is not being turned / No

If NG, replace power steering oil pressure switch.