Electrol wireing digram for 1990 TC Maserati

[Guest]

I'm looking for a wireing digram for a 1990 TC Maserati. My speed meter and cruse control are not working. The onbord computer is comunicating with the distance sencer. Help

[Guest Stephen Lyons]

I'm not sure that a wiring diagram would clarify your issue here. When you say that your computer is communicating with the speed sensor, I presume you mean you do not have a trouble code "15" coming up? Also, has your odometer stopped registering as well?

The symptoms you describe are almost always due to a speed sensor problem - either the plug at the speed sensor end is not making a good connection (most likely), or the speed sensor unit itself has failed (also possible).