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 PCM. The PCM adjusts the IACV-AAC 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.

EC-PST/SW-01:

EC-PST/SW-01 - Connector View:

WIRING DIAGRAM




PCM TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL AND GROUND.

CAUTION: DO NOT USE PCM GROUND TERMINALS WHEN MEASURING INPUT/OUTPUT VOLTAGE. DOING SO MAY RESULT IN DAMAGE TO THE PCM'S TRANSISTOR. USE A GROUND OTHER THAN PCM TERMINALS, SUCH AS THE GROUND.

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

Step 7:

DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION

POWER STEERING OIL PRESSURE SWITCH
1. Turn ignition switch "OFF".
2. Disconnect power steering oil pressure switch harness connector.
3. Start engine.







4. Check continuity between terminal 1 and body ground.
If NG, replace power steering oil pressure switch.