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.




ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values and are measured between each terminal and (43) (ECCS ground).




CONSULT REFERENCE VALUE IN DATA MONITOR MODE
Specification data are reference values

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

WIRING DIAGRAM







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).

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

If NG, replace power steering oil pressure switch.