2009 Prostar/Cummins ISX Electrical Fault

GustavoA232 · Sep 7, 2023

CB79 said: ↑

Hello,
ABS light was on with a message of ABS Module on the dash screen. Mechanic changes an ABS sensor and now the ABS light is off, as well as the ABS Module message. However, now I'm getting the message "Electrical Fault" and the warning buzzer is beeping nonstop; fuel, battery & air gauges not working; cruise control not working; fan clutch remains on at all times. Brought it back to mechanic and he says my dashboard might be bad. I feel like the issue is somehow related to the work they've done. Any suggestions?

Thanks in advance!
Click to expand...

GustavoA232 · Sep 7, 2023

CB79 said: ↑

Hello,
ABS light was on with a message of ABS Module on the dash screen. Mechanic changes an ABS sensor and now the ABS light is off, as well as the ABS Module message. However, now I'm getting the message "Electrical Fault" and the warning buzzer is beeping nonstop; fuel, battery & air gauges not working; cruise control not working; fan clutch remains on at all times. Brought it back to mechanic and he says my dashboard might be bad. I feel like the issue is somehow related to the work they've done. Any suggestions?

Thanks in advance!
Click to expand...

Bakken813 · Aug 20, 2024

Not sure if you figured things out, but I have a 2009 Int. Prostar with the ISX in it. One day as I was driving my fan engaged to keep my motor cool, when it did it got stuck on high and all the gauges on the right side of the instrument panel dropped down to 0. When that happened the warning buzzard went off because the ecm believed I had no air pressure. I also lost cruise control and engine brake. Well I decided to take off the instrument cluster and I cleaned the inside part of it, the inside part being the motherboard. I Unhooked all the connections and then reconnected them. After I did that I turned on my truck and everything was back to normal. It was pretty dusty in there, anyways haven’t had any issues since. Still thinking about replacing the instrument cluster though just in case. Anyways I hope this helps someone. Have a great day!

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