Operation CHARM: Car repair manuals for everyone.

Resistance

To test for resistance values, place the leads of the multimeter on each side of the circuit or component being tested. Adjust the ohm settings on the multimeter until an acceptable reading is displayed. The lowest scale that gives a reading without going over the range (1 or OL) gives the most accurate reading. Compare the reading displayed on the multimeter to the specification found in the service manual or bulletin. Verify that the scale reading on the multimeter is the same as in the specification (megohms, kilohms or ohms).

NOTE: When using a multimeter on the ohmmeter or diode test scale, make sure the circuit or component is disconnected from a power source. Applying voltage to a multimeter when you are measuring resistance can damage the multimeter.