![]() Move your meter's red lead to the main ground terminal, engine end side. ![]() To locate the problem, continue with the next steps. Did you get a higher reading? There's some unwanted resistance in the ground circuit. Consult your manufacturer's specifications in your vehicle repair manual, if necessary. You should get a reading of 0.2 volts or less. Have an assistant crank the engine for about five seconds, just enough to get a good reading. Connect the meter's red lead to a clean surface on the engine, and the meter's black lead to the negative (-) battery post.Or choose the autorange function, depending on your particular multimeter features. Set your DMM to DC Volts and choose a range as close as possible, but greater than, battery voltage.Connect the switch to the control circuit terminals on the starter relay or solenoid. You can also use a starter remote switch. Consult your car owner's manual or vehicle repair manual to locate the fuse. On other systems, you can remove the fuel pump fuse. If the ignition system is equipped with a distributor, you can disconnect the high tension cable from the distributor cap and ground it to the engine (bolt or bracket) using a jumper wire. The following test takes a voltage drop reading to locate unwanted resistance in the engine ground path.ĭisable the ignition or fuel system to prevent the engine from starting during your tests.
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