Operational

DESCRIPTION
Check operation of the power steering pressure switch if either or both of the following concerns are noted:

- Engine stalls during parking maneuvers.

- Engine idles at high speed.

PROCEDURE
The following test is based on the fact that the power steering pressure switch is normally closed. As power steering load increases, the power steering pressure switch opens and increases the idle speed.
1. Disconnect electrical connector at power steering pressure switch.
2. Connect a continuity tester, Rotunda Digital Volt-Ohmmeter 014-00407 or equivalent, across power steering pressure switch terminals.
3. Start engine and let idle.
4. Power steering pressure switch should be normally closed (less than 5 ohms) with steering wheel straight ahead.
5. Turn steering toward either stop while watching continuity tester. Power steering pressure switch should open near the stops (infinite reading on ohmmeter).
6. If power steering pressure switch fails either test, replace power steering pressure switch. If power steering pressure switch is OK, check engine idle speed control system.