Professional diagnositic tools II&quot

The way to Troubleshoot a Saab ECU 1Locate the open OBD port below the dash of the Saab, to the left from the fuse panel auto diagnostic.2Plug the OBD plug into the OBD port on your Saab.3Turn the ignition crucial to the "II" position and wait for the ECU to provide you with a code on the scan tool's digital display Professional diagnositic tools.4Read your technical service manual (for the model and year of Saab you own) to determine what the numbered code refers to. If there is a problem with your ECU, this will also be reflected on your scan tool's digital readout. If the ECU is faulty, have it replaced by a professional mechanic.