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| Truck & Diesel Mechanic Forum - ASE Medium/Heavy Duty Truck Forum :: Forums :: Freightliner | |||
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 2010 Cascadia with Trailer light issues |
| Author | Post |
| irishniners |
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   Posts: 80 | Not my findings but from one of our technicians. I am just copying and pasting his email so any grammar issues are from the original email. Hope this helps someone. "I wanted to pass this on to you so you can get this sent out to other techs in the company who will run into this problem I had last night. A fleet sent me in a trailer that had no marker lights. Right away I was able to determine the problem was the tractor as I had no power for the lights coming out of it it was a 2010 Cascadia. First thing I did was go to the fuse panel built into the Sam chassis module under the hood mounted to the bulkhead on the drivers side. All the trailer light fuses are there none of these fuses where hot but they where all good weird part was my trailer stop lamps and turn signals where working but there was no power to those fuses or relays either. All of the fuses where hot in the panel except for the ones for the trailer lights. I checked anyways and my main hot and ground to the Sam chassis module where good. At this point I was stuck because the headlamp switch on these trucks does not turn the lights on directly anymore it just asks the modules to turn them on and I knew my problem had to be in the Sam chassis module because my tractor lights worked fine. At this I called the fleet and told them everything I had found and that I was stuck and did not know hot to proceed to fix this problem and I asked if they could contact anyone who could help me get this driver back on the road. 15 minutes later the fleet called me back and I guess they had talked to someone as they had an answer for me as to what I needed to do. I was told this problem is affecting all of the new 2010 Cascadias and id say its safe to say they will not be the only ones having this problem. They told me its a simple fix but only a temp repair as there is an active recall on this problem. I was told to take the drivers side stairs off and mounted in front of the battery's was 3 fuses and 3 relays for the modules. They said this repair wouldn't make much sense because the Sam chasis module is still working but the Sam chasis module is blowing its fuse in the battery box and it is just affecting the trailer light portion of the module and to just go ahead and replace the 30 amp fuse and give the driver a bunch of fuses to take with him as it will continue to blow the fuse until it gets to the dealership to be repaired under the recall. Hope this helps any other techs that run into this." | ||
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| BlinkerFluid |
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  Joined: Thu Jul 09 2009, 10:16PM Posts: 137 | a bunch of fuses.... or one circuit breaker???? | ||
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| hdtrktch |
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  Posts: 301 | Thanks for posting that. I think FL one-upped Volvo in the overengineering department with all of the electronics on the Cascadia. ASE Master Truck Technician L2 Advanced Level Certified | ||
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| BlinkerFluid |
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Joined: Thu Jul 09 2009, 10:16PM Posts: 137 | Got one in the bay right now with this same problem... I had to help a non member of this forum with the issue... He asked how i knew that was the problem... I said, dont hate me cause I think that I am better than you, hate me because I just proved to you that I am... Then I told him that i was just messing around and that I heard of this issue here on truck mechanic tips.com | ||
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| irishniners |
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Posts: 80 | Glad to hear that it came in handy. | ||
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| my02cummins |
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 Joined: Sat Feb 20 2010, 02:06PM Posts: 20 | Ya i had one acouple weeks ago with no trailer lights i found out check the fuses under the hood first | ||
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| Moderators: Master Mechanic, popskull, Muffler Bearing, irishniners, hdtrktch, wcdiesel, proffesor |
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