Power Steering Oil Pressure Switch Circuit

EC-PST/SW-01:

EC-PST/SW-01 - Connector View:

WIRING DIAGRAM

M3,B4,M50,B101,M49,F63,E70,E81 Connector Views:

M1 Connector View:

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-FICD solenoid valve to increase the idle speed and adjust for the increased load.




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




ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values, and are measured between each terminal and (128) (ECM ground).

Part 1 Of 2:

Part 2 Of 2:

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).
If NG replace power steering oil pressure switch.

IACV-FICD solenoid valve




Disconnect IACV-FICD solenoid valve harness connector.
- Check for clicking sound when applying 12 V direct current to terminals.




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