2011 Assault 800 TPS voltage

[STLJ]

I have done a lot of reading on this but have not found anything to relate to so...

Here is my deal,

Using a battery to feed 12.74v to the system at the ECM power plug
Check reference voltage on left pin 5.002v, this looks good
Adjust TPS at center pin to .700v, this also looks good
Adjust throttle plates to .940v

Disconnect battery, start sled and the voltages change, increase of .102v
Left pin is now 5.104v
Center pin is now 1.044v

Cant seem to get this thing to run right,
Also noticed it will start and run with the 2 orange wires disconnected or connected at the rectifier, these are ECM power but labeled as Booster Power in the diagrams.

I can only assume this the extra .102v would throw things out of range,
If this is not the norm where could this extra voltage be coming from.

System voltage when running is at 13.74v DC


SGK

 

[NapaMatt]

I have ran in to this also!!

When supplying 12volts to the sled i would get a get a different TPS Setting VS when the sled is running!!