07 t190 Code 75-37 5.0 Volt Sensor Supply 1 Out Of Range Low

[amp426]

As soon as the system has power is throws code 75-37 and shuts speed down to 50% and has less power before it shuts down under a load. Has anyone else experienced this problem or found a solution? ive had it to the dealer and they plugged it in and couldn't identify the problem. Ive gone over plugs and wires and haven't found any bad wires or corrosion.

 

[Bobcatdan]

The dealer is an idiot. With service software it should not be hard figure out. First look at actual 5 volt voltage. If low, unplug each sensor on the circuit one at a time to see if it pops up to spec. If that doesn't solve it and wiring looks good, probably a bad controller. If its a hard fault, it should be easy to find. Intermittent faults can be the fun ones because first you have to get it to act up, then hope it is still in fault when testing. Then after repair hope like hell you have run it long enough to prove your repair worked.

 

[amp426]

The dealer is an idiot. With service software it should not be hard figure out. First look at actual 5 volt voltage. If low, unplug each sensor on the circuit one at a time to see if it pops up to spec. If that doesn't solve it and wiring looks good, probably a bad controller. If its a hard fault, it should be easy to find. Intermittent faults can be the fun ones because first you have to get it to act up, then hope it is still in fault when testing. Then after repair hope like hell you have run it long enough to prove your repair worked.

what sensors run on the 5 volt system? is there any guidance online for a wiring diagram? Yes every time it throws the code.

 

[Bobcatdan]

what sensors run on the 5 volt system? is there any guidance online for a wiring diagram? Yes every time it throws the code.

Coolant temp, oil pressure, hydraulic oil pressure, hydraulic temp and seat bar switch