Camaro V8-305 5.0L VIN F FI (1985)
Transmission Position Switch/Sensor: Testing and Inspection
WIRING DIAGRAM
CHART C-1A
PARK/NEUTRAL SWITCH
2.8L & 5.0L "F" 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:
a.
Idle Air Control
b.
VSS Diagnostics
c.
EGR Control
