05-07-2018, 12:22 PM
(05-07-2018, 09:39 AM)ISXCUMMINSGUY Wrote: yes but then it sends a signal to the ECM... The ECM is not receiving signal from cab controller. All wiring is ok. So either cab controller messing up or ecm...When you unplug it it does change to open circuit .. the code is for low coolant. Installed new sensor still same. Customer had to use truck so we let it go for now will have it in here another weekend and see what we can do....
If fault changes then it's relaying data and power. What type of sensor is installed? Is it installed upside down?