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International Automotive Technicians Network
Re: Chevy C-2500 A/C control head, repeated failures
Posted to HVAC Forum on 8/13/2003

Terry:

Actually you should be using the diode test setting on your VOM rather than the Ohm setting. Ohmeters typically use about .5v to flow current through the circuit, whereas the diode test will generally use about 2.0v. The diode junction of a silicon di... Login to read more.