There are several components that work together, to allow the engine
to be cranked.
- ignition switch (feeds power to the P/N relay
- multi-function transmission range switch (tells the TCM what position
the shifter is in)
- TCM - transmission control module (grounds the P/N relay to allow cranking of the engine)
- park / neutral position Relay (supplies power to the starter when
the TCM provides a ground)
Park / Neutral relay is located on the relay panel.
Transmission Range switch is mounted to the transmission.
Thomas
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Tuesday, December 20th, 2016 AT 11:17 AM