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Stan
Stan, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3526
Experience:  Technical support engineer
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Actros 2640: Stan, I would like help with Mercedes Actros

Customer Question

Hi Stan, I would like help with Mercedes Actros 3848 and MB Actros 2640 locating analog wire for fuel sensor to read voltage reading.
Should I expect positive or negative voltage reading? We are working on Mercedes Actros 3848 and 2640. Thank you.
Submitted: 1 year ago.
Category: Mercedes
Customer: replied 1 year ago.
Can I please have a wiring diagram for fuel tank sensor? (fuel tank sending unit to fuel gauge for fuel level reading).
Wiring diagram for Mercedes Actros 2640 year2009 OR Mercedes Actros 3848 year2008. Any other alternative could be doable too. Thank you.
Expert:  Stan replied 1 year ago.
Hello,Sorry for the delayed reply, i did not have a chance to get online for a while.Here is the data i have on the fuel level sensor:Wiring diagram
Expert:  Stan replied 1 year ago.
Functional description:
Expert:  Stan replied 1 year ago.
As you can see, the resistance of the fuel sender must change depending on fuel level.If the wires are interrupted, the HM (rear module) will cut the voltage supply to the sensor. So the voltage measurments have to be taken with sensor connected.
Expert:  Stan replied 1 year ago.
Best regards,Stan