The Problem
Your scan tool tells you an Engine Computer Module (ECM) output in a car is
faulty. You replace the ECM but it could fail again, if the failure wasn't
really in the ECM. The problem is locating the cause of the failure: shorted
wiring, open wiring, high current draw, poor ground or a faulty component. An
ECM can lose its diagnostic capabilities when damaged by a component that is
downstream. You can replace the ECM and the failure can happen again. Or, you
can pull the ECM, pull out the technical manuals, and by using a VOM, start
backprobing and connecting pins and re-wiring to locate the problem. This
doesn't always work, and can lead to a time-consuming and expensive search for
the problem.
We
designed the QUICK CHECK tester to be an invaluable, easy to use diagnostic tool
enabling a mechanic to quickly actuate and precisely measure Electronic Control
Module (ECM) output loads. It plugs into the vehicle and shows which downstream
component is ruining the ECM. The ECM Performance Analyzer automatically
identifies those shorted, partially shorted, or open ECM circuits...IN LESS THAN
10 MINUTES!
Never Obsolete
Easy to use Printed Circuit Connector Cards
automatically customize the QUICK CHECK tester to the ECM without requiring a
cumbersome and time consuming "breakout box".
Updateable
New Printed Circuit Connector Cards will also be made available to cover
future models and other makes.
Works on all General Motors Computer Controlled Engine Systems
A low-cost, vehicle-specific adapter card replaces the ECM in the vehicle
harness, and connects all of the circuits to the Quick Check analyzer. Press a
button...twist a knob, you quickly actuate and precisely measure the ECM output
circuits! You can pinpoint a faulty circuit in minutes, without guesswork,
wasted time, or repeat ECM failures.
Positive identification of shorted or open ECM loads can easily be done in
minimal time. This is very important when troubleshooting many ECM systems
because a shorted solenoid can totally disable the ECM's diagnostic capability,
rendering a Scan Tool useless.
Use to:
The QUICK CHECK tester also tests for mechanical solenoid function by
electrically generating a "stream of pulses" which should invoke
mechanical movement producing a repeatable and audible "sound
signature". For example, the "sound signature" of a non-properly
working (stuck) fuel injector can be compared to the "sound signature"
of a properly operating injector. All ECM power and ground wiring is also tested
by the QUICK CHECK tester.
Tests ECM Power and Ground
The bar graph display on the analyzer offers automatic indication of faulty
power and sensor ground wires to the ECM.
Tests all loads
Electrically actuates coils by either providing battery power to activate a
solenoid wired to ground, or by sinking current to ground for a solenoid wired
to power. Precise measurement and digital display of actual coil actuation
current is performed either way.
Automatic indication of a shorted coil
If a shorted component is tested, a 'SHORT' light pops on, and the Quick
Check automatically sets the maximum current to a safe level, preventing further
damage.
Instant feedback
The QuickCheck can electrically generate a "stream of pulses" which
should invoke mechanical solenoid movement, producing a repeatable and audible
"sound signature", for example, to test for a stuck fuel injector
solenoid.
