Power Steering Pressure Switch: Testing and Inspection

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

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
- Specification data are reference values.





ECM TERMINALS AND REFERENCE VALUE

Remarks: Specification data are reference values, and are measured between each terminal and (25) (ECCS ground) with a voltmeter.














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).