Medium and Heavy Trucks
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Hi my name is***** will be glad to help. What is the chassis model and your engine make and model? Check the harness between the sensor and ECM for damaged wiring and connector pins. I can help with some schematics if necessary once I have the engine and chassis information. Let me know
If the coolant level is full and the sensor is new, the problem is most likely in the wiring between the sensor and ECM.
Sensor voltage for all sensors will be a 5 volt signal from the ECM and then the ECM reads return voltage
click on this link for your diagram and ECM pin identification
Pin 32 is the return on the OEM connector
Here are the Connector locations
Furthest to the Right facing the ECM ports
Thanks for the update, No continuity? so you have an open circuit or wire between the sensor and the ECM? If so make a test wire and run a test wire to see if the code goes away.
Read the schematic I posted. it give the pins for the return of the sensor to the pin 32... see if the fault goes away.
It shows another connector in the circuit as well going through pins A and B on that connector too.
Shows Return is terminal A from the sensor black and white according to the schematic. Go from A from the sensor to 32 on the ECM
Sounds like a problem with the ECM . Try having the software updated and reflashed to see if your problem resolves. Let me know.