2015 silverado 2500 ltz, lml. Deleted, minor tune (done by previous owner)
Had a #5 injector issue, diagnosed and replaced the injector, no further issues there. While I was there, I replaced the fuel filter as well.
Afterwards, when I started the truck, I got a P0193 code, and reduced power mode. Thats FRPS circuit high. (ECM reads more than 4.81v from sensor signal, determines high rail pressure of 31kpsi, and immediately triggers "reduced power mode")
I began diagnosing the issue with my buddys snap-on zeus scanner and realized that the ecm was reading high rail pressure with key on, engine OFF... as there is no way the rail can contain that much pressure without the CP4 running, its a signal issue. I quickly realized I have 5.05v going TO the senor, via yellow signal wire and the supply wire. thinking I had a wire short, I went to the ECM X3 connector, and found no shorts between the ecm connector and the sensor connector. Fearing the worst, I checked the pins on the ECM, and I definitely have 5.05v coming out of the SIGNAL pin as well as the supply pin. This suggests a short in my ecm...
I have a used ECM available, but I know the VATS system and the VIN need to be relearned to the replacement ECM...
My question is this: can I reprogram the replacement ECM using the data on my old ECM, as it is functional with the exception of the fault in a single 5v circuit? Can this be done using a Snap-On zeus?
Had a #5 injector issue, diagnosed and replaced the injector, no further issues there. While I was there, I replaced the fuel filter as well.
Afterwards, when I started the truck, I got a P0193 code, and reduced power mode. Thats FRPS circuit high. (ECM reads more than 4.81v from sensor signal, determines high rail pressure of 31kpsi, and immediately triggers "reduced power mode")
I began diagnosing the issue with my buddys snap-on zeus scanner and realized that the ecm was reading high rail pressure with key on, engine OFF... as there is no way the rail can contain that much pressure without the CP4 running, its a signal issue. I quickly realized I have 5.05v going TO the senor, via yellow signal wire and the supply wire. thinking I had a wire short, I went to the ECM X3 connector, and found no shorts between the ecm connector and the sensor connector. Fearing the worst, I checked the pins on the ECM, and I definitely have 5.05v coming out of the SIGNAL pin as well as the supply pin. This suggests a short in my ecm...
I have a used ECM available, but I know the VATS system and the VIN need to be relearned to the replacement ECM...
My question is this: can I reprogram the replacement ECM using the data on my old ECM, as it is functional with the exception of the fault in a single 5v circuit? Can this be done using a Snap-On zeus?
