TCM FGC20N25:
Truck starts in gear

I have an older model tcm fg20n25 with a Nissan h20 motor and single speed transmission.unit starts in gear,found 2 switches on the transmission,1 is a reverse switch and the other possible the neutral safety switch.I disconnected both switches and the unit still starts in gear.there is 1 adjustable linkage on the lever selector.lots of funny wiring done to this thing but none to the trans side.im stuck please lmk your input
  • Posted 12 Jan 2024 10:26
  • Discussion started by roc109
  • New York, United States
Showing items 1 - 6 of 6 results.
Thank you
  • Posted 31 Jan 2024 07:38
  • Reply by roc109
  • New York, United States
Do you have a muiltimeter if so put it on ohms and check the neutral switch with the wires disconnected put the truck in and see if the switch is closed than see if when you put it in forward and reverse it is open if the switch is good than go to the keyswitch and find the start terminal run one wire from the start terminal of keyswitch to one side of neutral switch than take the other terminal and run another wire from other side of neutral switch to starter s post the small wire on starter that should make the truck start in neutral only.
  • Posted 31 Jan 2024 00:04
  • Reply by Scott_
  • Pennsylvania, United States
Scott
I don't understand that if you have neutral wires disconnected than how is it possible that if the s post of starter is not jumped there would be no way for starter to crank.
  • Posted 30 Jan 2024 15:18
  • Reply by Scott_
  • Pennsylvania, United States
Scott
Went back no additional wires ran to starter to key switch,will somehow have to add a wire from key switch to neutral switch to starter if that makes sense
  • Posted 30 Jan 2024 14:32
  • Modified 31 Jan 2024 07:01 by poster
  • Reply by roc109
  • New York, United States
I'm going back tomorrow will dig into it and report back
  • Posted 22 Jan 2024 12:50
  • Reply by roc109
  • New York, United States
Check to see some one must have ran a wire from keyswitch start terminal to s post on starter if you disconnected neutral switch and it still starts. Get back to me and l will help you fix this. This is dangerous could run someone over.
  • Posted 13 Jan 2024 01:02
  • Reply by Scott_
  • Pennsylvania, United States
Scott

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