MBE 4000 DDEC VI Troubleshooting – Section 91 SPN 1624 (CPC) – J1939 Tco1 Message Missing and Tachograph Vehicle Speed Signal Erratic and Missing
MBE 4000 DDEC VI Troubleshooting – Section 90 SPN 1590 (CPC) – J1939 Acc1 Message From Adaptive Cruise Control Missing