2002 Int 4300 Check Elec Sys, ABS, Warn Engine (unrelated), and other questions.

Hey guys have a new to me 4300 with some Christmas lights on. Dont think they are related. ABS always on. The others cone and go. Gauges seem fine. Truck drives fine. I tried Bendix ABS software but nothint happened when I tried to connect. I will try the older servicemaxx thats free next (I have Inline 7) Any tips on diagnosing?

Also theres a sensor on the coolant res but nothing connected to it, should there be?

And last question, whats the proper way to completely drain and refill the cooling system? Should I use a vacuum kit to refill? Want to start right, cavitation issues and all

Thank you. Trying to take care of issues one by one.

 

Wow I said all that and failed to mentioned, it is a dt466. Sorry!

No stop engine just Warn Engine.

Ive read the power to ecm mentioned, will give that a try. I couldnt get any DTCs wih ServiceMaxx and Inline7, but did see temps and such. Ordered a chinese Nexiq2, if its no good I will go for the real one.

 

I hooked up the chinese Nexiq2 via servicemaxx and same thing, DTC codes just ... and nothing, same as with my Inline7. I might drive around with it hooked up and see if a dtc shows up with warn engine, or if a sensor reading is off. Still no luck connecting with bendix software. I did notice an abs relay on right front leaks under a strong service brake push, but I dont think this is causing the abs light.

Ill try to see if I can find the power fuse. Ill also post up the last 8 of vin. I need to change all the filters, maybe a misfire causing the light?

 

Thats exactly the one I am using.. downloaded from navistar. Reads all signals, but wont give me dtcs.. I might pay a local guy hetr and see if he can read anything, that will also tell me if its my equipment/software or the truck..

Thanks all. Thanks heavyd, youre an encyclopedia of knowledge