2011 CHU613, headlights not working, horn goes off intermittently

[Caleb00]

I have a 2011 CHU 613, the headlights quit working, it went from the selector switch not changing from high to low, to now no lights working at all. Tried hooking a a code reader but there is no communication from the truck to the reader. On the truck display says on active fault code #230. And worse of all the damn horn goes off intermittenly now. Anyone had this problem before or have any suggestions? Thanks

[Rob]

  On 9/28/2011 at 12:58 PM, Caleb00 said:

I have a 2011 CHU 613, the headlights quit working, it went from the selector switch not changing from high to low, to now no lights working at all. Tried hooking a a code reader but there is no communication from the truck to the reader. On the truck display says on active fault code #230. And worse of all the damn horn goes off intermittenly now. Anyone had this problem before or have any suggestions? Thanks

Pull the horn button out of the steering wheel and look for something coming apart or worn. If nothing apparent, pull the steeing wheel and change the multi function switch. This is the one the turn signal lever attaches to. Some switches in vehicles can be unbolted without removing the steering wheel, but I'm not familiar with the construction of that chassis. The problem you are experiencing is somewhat common with many vehicles.

Rob

[shortstack]

A short in the steering column maybe? Check fuses for the lights not working. Trey

[Caleb00]

Hmmm thanks for the speedy replies from both of you! Well I checked fuses they are all ok. However after removing them and check the horn circuit the horn problem has since stopped. On further inspection I found some water in the harness connectors and I'm currently cleaning and drying them out but the light are still a no go and a different code has now appeared #251. I'm kinda just working in the dark now, we are a brand new shop for a new location. I have schematic or any kinda info that i really need! haha makes for a great time! going to start testing the multifunction switch now.

[Caleb00]

New update: Horn no longer an issue, fuses are ok, multifunction switch is ok, and engine code #251 is no longer appearing. However new issues have come forth such as display showing regen switch malfunction, and engine code #3695, and still no communication from pc to truck. Anyone have acces to a wiring schematic that be able to give me an idea as far as which plug or connector has all these in common? I'm sure its prob. just more water but my schematic wont arrive till next week. Any more suggestions?

[rhasler]

Check the MCFC 101 pin connector on the cab bulkhead. It sounds like the J1939 datalink is not functioning which would cause your inability to communicate with the truck as well as the DPF switch fault and probably the 251 (engine time) fault.

[Caleb00]

Thanks again for the replies, so update on the problems............Just now got the headlights fixed, found that the vacuum pump installed after factory is driven by a belt off the PTO, however the belt had stretched or what have you and lossened enough to start rubbing against the harness inside the frame on the driver side. Further inspection revealed shorted wires. Note to self and all, next time do better probing into drivers activities when the prob. started. However still no luck on the Regen switch malfuntion and the engine code #3695.

[Caleb00]

  On 9/28/2011 at 10:59 PM, rhasler said:

Check the MCFC 101 pin connector on the cab bulkhead. It sounds like the J1939 datalink is not functioning which would cause your inability to communicate with the truck as well as the DPF switch fault and probably the 251 (engine time) fault.

On the cab bulkhead the highest number pin connector I have is 95, am I looking at the wrong bulkhead connector?

[rhasler]

That's probably it. I can't remember how many wires actually go in/out of the connector, but there are 101 cavities in it. It should be above and to the passenger side of the steering column.