... Training Diagnosing Body Electrical Problems Using an Ohmmeter The Ohmmeter can check for high resistance problems, and see if the relay coil resistance is within specification Body Electrical. .. Technical Training Diagnosing Body Electrical Problems Using a Jumper Wire A Jumper wire can be used to bypass the relay ground circuit to see if the headlight circuit is OK Body Electrical Diagnosis... continue to use a process of elimination 12 LEXUS Technical Training Diagnosing Body Electrical Problems Diagnosing Parasitic Load Problems A parasitic load continuously draws current from the battery,