Reader Upload Request: x7F Negative response code error
06-08-2017, 02:07 PM
#2
glad your problem is solved but it wont help anyone else searching.....
X7F negative response is as far as i can tell is either lack of voltage to the ECM or interference to the ECM from such things as the radio , body control computer (doors open and such) or aftermarket radio adapters or in my case not having the ecm totally(there are multiple pink ignition wires that need 12V) powered up on the run stand . I hope this helps someone
X7F negative response is as far as i can tell is either lack of voltage to the ECM or interference to the ECM from such things as the radio , body control computer (doors open and such) or aftermarket radio adapters or in my case not having the ecm totally(there are multiple pink ignition wires that need 12V) powered up on the run stand . I hope this helps someone