Dutch24V 0 Posted June 22, 2007 What would happen if I were to connect a multimeter between the battery positive and the metal ecu casing? Will this actually cause any damage? Cheers again, Dutch Quote Share this post Link to post Share on other sites
dr_mat 0 Posted June 22, 2007 In theory this would short the battery through your multimeter, depending on what mode the meter was set to. I'd rather not throw several-hundred-amp sparks around by the ECU, personally ... Quote Share this post Link to post Share on other sites
Dutch24V 0 Posted June 22, 2007 The Multimeter was set to measure a maximum voltage of 20 volts. There were no sparks and the reader took a few seconds to read 12 volts!? I hope I haven't caused any damage, but the obd diagnostic cable led was green, and now it's red :( Dutch Quote Share this post Link to post Share on other sites
