Allegro Bus 2003 Instruments not working
Hi there everyone, We have a 40 foot 2003 Allegro bus on a Freightliner chassis on which the instruments and warning indicators is not working on today. We were getting ready to take off with it a...
Forum Discussion
Your problem may be as simple as a blown fuse or bad relay. Your first steps should be verifying power to the instrument system. You will need the wiring diagram for you chassis.
Your freightliner chassis could have "System III" type instruments or
"MMDC" type instruments, depending upon the build date of the chassis. These systems take data from the vehicle data bus to drive the instruments, and are very different from the typical automotive type instruments.
Freightliner maintains a help desk as a free service to all freightliner chassis owners. Have your chassis vin number available (last 6 digits) and give them a call. They can look up the wiring diagram for your individual chassis and give you some ideas where to look for the problem. They have helped me several times. The help desk number is 1 800 385-4357. They can send you the wiring diagram for your coach.
I have some troubleshooting info on both systems (not the wiring diagram) that I can provide if you want it. If you want the troubleshooting info, I'll need your email address via private message.
I think your best bet is to call the helpdesk first.
Fred
Your freightliner chassis could have "System III" type instruments or
"MMDC" type instruments, depending upon the build date of the chassis. These systems take data from the vehicle data bus to drive the instruments, and are very different from the typical automotive type instruments.
Freightliner maintains a help desk as a free service to all freightliner chassis owners. Have your chassis vin number available (last 6 digits) and give them a call. They can look up the wiring diagram for your individual chassis and give you some ideas where to look for the problem. They have helped me several times. The help desk number is 1 800 385-4357. They can send you the wiring diagram for your coach.
I have some troubleshooting info on both systems (not the wiring diagram) that I can provide if you want it. If you want the troubleshooting info, I'll need your email address via private message.
I think your best bet is to call the helpdesk first.
Fred
