Manifold air temp,
Engine control module or main computer,
OHM is a measurement of electrical resistance, used in testing electrical senders and other electrical equipment, an OHM meter fitted to a multi meter is a hand tool used to do these tests.
If this is all a tad strange and you are unsure, best let a mechanic check these for you.
Wednesday, July 25th, 2012 AT 10:43 PM