Cutlass Ciera V6-231 3.8L (1985)
Transmission Position Switch/Sensor: Testing and Inspection
Fig. 012 - WIRING DIAGRAM for Chart C-1A Park/Neutral Switch Diagnosis. VIN 3, VIN J, VIN L, VIN W
CHART C-1A
PARK/NEUTRAL SWITCH
1.8L TURBO "J" SERIES
2.8L SERIES
3.0L "N" SERIES
3.8L "A" & "C" SERIES
FUEL INJECTION (PORT)
The Park/Neutral Switch contacts are a part of the Neutral Start switch and are closed to ground in park or neutral, and open in drive ranges.
The ECM supplies ignition voltage through a current limiting resistor to ckt 434 and senses a closed switch when the voltage on ckt 434 drops to less
than one volt.
The ECM uses the P/N signal as one of the inputs to control;
Idle Air Control
VSS Diagnostics