Medium and Heavy Trucks
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Hi Leo. My name is***** will be glad to help. Bare with me while I pull up your codes.
2003 FMI 31 It is voltage above normal - Communication link lost between TCM and ECM. Check the harness and connector pins for damage between the engine ECM and Transmission TCM. If okay then have the TCM bench tested for a failed TCM.
3359 FMI 31 is the same. Loss of J1939 Datalink
Injector Needle Control Valve Cylinder 1,2,3 Shorted to Ground
Injector Needle Control Valve Cylinder 4,5,6 Shorted to Ground
This is usually an indication of failed injector drivers in the ECM.
Hi Leo, Click on this link to access the body builder manual for this truck.
Hi Leo, Did you get this resolved?