Hello Robe
Thank you for your help in the subject diagnostic cable for truck
I have a problem with the fork-lift truck showed me the error
337 / low signal from the sensor CNP /
the sensor wires coming three plug / C004 /
1 12v
2 crank +
3 crank -
and on another diagram to said trolley
1 12v
2 crank signal / - /
3 crank signal +
which describes the schema of connections, is a good

I have no voltage 12v
greets Krysztof