Power Steering Pressure Switch: Testing and Inspection

Fig. 040 - WIRING DIAGRAM for Chart C-1E Power Steering Pressure Switch Check. VIN 3, VIN L:

CHART C-1E

POWER STEERING PRESSURE SWITCH CHECK

3.0L "N" SERIES, 3.8L "A & C" SERIES

FUEL INJECTION (PORT)

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. 039 - 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.