2021 INTERNATIONAL RH SERIES/ A26 ENGINE:INTERMITTENTLY DASHBOARD DROPS OUT MESSAGE OF LOSS OF COMM COMES ACROSS DISPLAY:E.C.M SCAN SHOWS LOSS OF COMMUNICATION FOR ABS/TRANSMISSION/ECM MODULES:ALL GAUGES LIGHT UP ON DASH BOARD AND CAN NOT READ ANY GAUGES ALL EXTERIOR LIGHTS WORK AND ONLY THING YOU CAN GO BY IS AIR TANK PURGE TO DRIVE TRACTOR BACK TO SHOP:ANY HELP WOULD BE APPRECIATED IF SOMEONE HAS EXPERIENCED THIS PROBLEM:
It sounds like something is taking down the communication on the J1939 data link. You need to test the data link with a multimeter. It could be a data link wire with the insulation rubbed through and grounding somewhere.
Electrical not really my strong suit readings as far as voltage and ohms in spec could it be checked with laptop hooked up and all modules plugged in while you flex or grab harness and see if codes go inactive thank you for any information:
Yes will check that again when tractor was taken to dealer they stated that is was the telematics device and not in tractor so we removed for several weeks and no problem just could not use geotab for logging,replaced batteries because of failure low c.c.a from assembly plant 660:replaced with arm type batteries problem went away now has reappeared.Thank you will check there have a good day!
I had same issue on my 2019 LT prostar . Loss of comm no gauges working. I fixed issue myself. On front bumper a sensor works cruise control and let you know when close to another vehicle. Disconnect it and you shouldn't have any more problems. Just need to replace sensor if you want cruise control working again.
