Kia 2004.5 Spectra Service Technical Training page 319

2004.5 Spectra Technology
If one of the functions of this ETACS circuit is not
operating as the logic chart shows, the next step is to
divide the system into components to determine the fault.
Other ETACS circuits work in similar fashion. For each
signal event, such as a switch opening or closing,
there is a time and action control event, such as
keeping a light ON for a period of time, or until
another signal event causes the light to be turned OFF.
ETACS DIAGNOSTIC
ETACS is a complex system, but one that is fairly
simple to diagnose. The ETACS is basically a means of
controlling electrical systems and components. Inputs
to the ETACS control module are typically switches
closing or opening. Outputs may be lights, solenoids,
or motors.
Diagnostics and troubleshooting ETACS should, then,
follow the basic diagnostic philosophy. That means
diagnosing an ETACS controlled system is basically the
same as any other circuit performing the same
function, except that there is now a central
input/output component that may or may not
contribute to a malfunction.
We have seen logic charts that define how an ETACS
controlled system works normally. Now, let's try
inspecting a circuit with which a customer has a
concern.
Body Electrical
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