I have a customer who has one of these trucks 1998 model. Apparantly drives OK, but sometimes intermittantly drives at a very slow speed and comes up on the dash Alarm Traction 12. Now i have some information on the EFG Shunt wound controllers, and alarm 12 states the controller is faulty. However, being intermittant i am not sure if its just a bad joint or something of this nature, also have been told could be handbrake switch playing up...but whats confusing me most is, that apparantly these trucks have had different systems on them. So i dont know if my fault codes match this truck system, and i cannot tell if this is the same system, because the truck is 150 miles away, and i dont fancy driving down such distance just to find out its another system. So can anyone help with any pointers and as to what system may be on this truck? Bosch? Lufi?

No worries got it sorted..was the efg shunt controller...problems was with the battery voltage dropping and causing false readings intermittanlty.