Power Steering Pressure Switch: Testing and Inspection

Fig. 033 - WIRING DIAGRAM for Chart C-1E Power Steering Pressure Switch Check. VIN 3:

CHART C-1E, POWER STEERING PRESSURE SWITCH CHECK

The power steering pressure switch opens when P.S. pressure goes high, such as on a full turn in either direction. When the P.S. switch opens, it turns the A/C relay off, and also sends a signal the ECM. The ECM uses this signal for idle control.

Fig. 032 - Chart C-1E - Power Steering Pressure Switch Check:

1. Checks to see that P.S. pressure switch opens when pressure goes high.
2. Checks to see that P.S. pressure switch is normally closed.