Moderator: volvite
So with the scan tool, one can pin down which ground specifically needs repair?smj999smj wrote:Often when the ECM detects a problem that will cause it to set a trouble code, it will take a snapshot of some of the datastream info, i.e. coolant temp, engine RPM, calculated load %, O2 sensor readings, etc., which is called the "freeze frame" data. This can be useful to the technician when he's trying to duplicate the problem when trying to diagnose it. Usually this info is accessed using a scan tool. If I'm not mistaken, the TSB per the CAN Comm codes and poor grounds qualifies the mentioned repair based on the stored codes and specific information recorded in the freeze frame data.