Related Diagnostic Procedures

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
Remarks: 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.

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.

IACV-FICD Solenoid Valve-2
Disconnect IACV-FICD solenoid valve-2 harness connector.




- Check for clicking sound when applying 12V direct current to terminals.




- Check plunger for seizing or sticking.
- Check for broken spring.