Big Electrical Problem

[BillyC]

I have three warning lights that will not go out after starting the engine.
One is the "WARNING" light on the left of speedometer.
Second is the "ABS" light and the third is the light by the "ATC" rocker switch on the left side of the drivers seat switch cluster.
I have my RV at a Monaco dealer right now, and they say it will not "Code Out" because it is a problem with the "J-19" wire, which goes to every "computer system" and the will have to check all of them. They say there are 15 - 20 to check.
Does this sound reasonable. I really thought that taking it to an authorized tech it would not be that hugh a problem?
Bill Cochrane
2005 Monaco Dynasty

[Mike Canter]

If there is a ABS problem then you will get the ATC light since that ATC uses the ABS system. Is this tech familiar with Monaco systems because there should be a ABS diagnostic port on the left side of the steering wheel under the dash. Check your owners manual.

[BillyC]

There is a port there, and I read the instructions and tried to reset but did not shut the lights out. I mentioned this to the service writer.
That "warning" light is about a "liquid level" and I checked all but no light out there either.
billyc

[Rex]

Billy C. the port under the dash may be to check the Cummins codes. There should be another one in the front run bay for the ABS. Also you should have a small circuit board in the front run bay that has a small black button. That is the ABS reset button.

I had the warning light for months. The manual says it is due to a fluid being low. Well I changed all the fluids and nothing turned it off. None were low before being changed. I also removed the coolant sensor and clean it and that did not help. Long story short, it was due to an engine speed sensor. There are two of them, one is backup. and they are on the engine just below the AC compressor, at least on my ISC. It takes about 4 hours to run the Cummins test to determine which is at fault, but the tech just replaced both as that cost less than the test labor hours would have. Took about 4 months before the sensor produced a code, turned the warning light on before the code was set.

[nodine]

Quote:

Originally Posted by BillyC I have three warning lights that will not go out after starting the engine. One is the "WARNING" light on the left of speedometer. Second is the "ABS" light and the third is the light by the "ATC" rocker switch on the left side of the drivers seat switch cluster. I have my RV at a Monaco dealer right now, and they say it will not "Code Out" because it is a problem with the "J-19" wire, which goes to every "computer system" and the will have to check all of them. They say there are 15 - 20 to check. Does this sound reasonable. I really thought that taking it to an authorized tech it would not be that hugh a problem? Bill Cochrane 2005 Monaco Dynasty

Bill,

If the problem is a communication error with the CAN bus then they may be correct. The J-19 refers to an automotive standard for the CAN bus which is a communications protocol for automotive applications developed by Bosch. The CAN bus does not have a physical standard from Bosch so each manufacturer can develop their own. J-19 is one of them. The CAN is a serial type bus that uses only two wires and connects many components such as taillights, brake sensors, door latches, etc., together and back to the control computer.

Now that I have said all that, worked in the field before, I doubt that is the problem and checking each connection sounds like a stall. My guess is you have a bad wheel sensor and the ABS/ATC light will not go off no matter what. Sometimes this can be a temporary thing as when you first start up after the coach sits for awhile. Our coach will squeal the brakes after sitting for awhile and cause the ABS/ATC light to come on. After driving long enough to burn the rust off and restarting the engine it will reset and all is good.

This may seem a little far fetched, but another thing that can cause the ABS/ATC light to come on is a plugged fuel fiter.

Hope they fix it for you,

Bob

[Happycarz]

Some folks with this issue have removed and cleaned the ABS wheel sensors, while others have just reseated the sensors. Here is the former thread.

[saduncan1]

I might suggest a Cummins shop for the Engine light, as far as the ABS/ATC light, Ill assume that your vehicle has a Wabco system in it, your dealer should be able to trouble shoot this with the Wabco software from a laptop. If they cant, try going down to your local transit Agency and talk to their mechanics, Most transit busses in Seattle WA. use these same systems, the fellas there should be able to direct you to a shop that has all the software to check all these systems. At $130 an Hr. you don't want someone that doesn't know what they are doing working on the bus. Try going to the Wabco INTERNET site and look for some help there. Your Cummins Dealer, Alison, Wabco might be able to steer you to a shop that can resolve all of these issues without it costing a fortune. Cummins can access your motor off the Ecm if needed. Good luck
Steve

[greystroke]

Quote:

Originally Posted by BillyC I have three warning lights that will not go out after starting the engine. One is the "WARNING" light on the left of speedometer. Second is the "ABS" light and the third is the light by the "ATC" rocker switch on the left side of the drivers seat switch cluster. I have my RV at a Monaco dealer right now, and they say it will not "Code Out" because it is a problem with the "J-19" wire, which goes to every "computer system" and the will have to check all of them. They say there are 15 - 20 to check. Does this sound reasonable. I really thought that taking it to an authorized tech it would not be that hugh a problem? Bill Cochrane 2005 Monaco Dynasty

It could be reasonable but I am assuming the code check was done at every diagnostic outlet. I have at least two, one under the dash and one back by the engine. I assume all fuses have been checked also.