If a short in an injector coil winding is constant, an ohmmeter will
accurately identify the lower resistance. The
same is true with an open winding. Unfortunately, an intermittent short is an
exception. A faulty injector with
an intermittent short will show "good" if the ohmmeter cannot force the
The engine cooling fan system is composed of one cooling fan, a series of 5
relays, the engine control module
(ECM), and the associated wiring. The cooling fan assembly includes two
resistors. This combination of
components enables the ECM to operate the cooling fan at 3 speeds using two fan
cont