Additional Functions
BATTERY/ALTERNATOR TEST
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6. Start the vehicle’s engine. Allow the engine to run for several
seconds, then turn the engine off.
If the Scan Tool did not detect “cranking status” for the
vehicle’s engine, an advisory message shows. Select Next,
then press MENU/ENTER
to repeat the battery check,
or, press MENU/ENTER
to return to the Main Menu.
7. When the battery check is complete, a
results screen displays the battery status.
The System Status LEDs provide a
PASS/FAIL indication, as follows:
Green = Good
Yellow = Normal
Red = Warning/Bad
8. Press and hold MENU/ENTER
to return to the Main Menu.
To perform a charging system check:
DO NOT perform the Alternator Test on Smart Alternator,
Hybrid or Electric vehicles.
1. Select Alternator Test from the Battery/Alternator Test Menu, then
press MENU/ENTER
.
An “instructional” message shows.
2. Set the parking brake. Start and warm the engine to normal operating
temperature. Turn on the headlights. Press MENU/ENTER
to
proceed.
An “instructional” message shows.
3. Press the accelerator pedal to raise engine speed to 2000 RPM
minimum, and maintain the engine speed.
When engine speed is within the required range, the alternator
test begins. A progress screen shows.
When the “countdown” timer expires,
an “instructional” message shows.
4. Turn the vehicle’s headlights off, and
return the engine to idle speed.
A “One moment please…” message
displays while the test results are
retrieved.
5. When the alternator check is complete,
a results screen shows charging system
voltage and indicates whether or not the
charging system is within acceptable
limits. The System Status LEDs provide
a PASS/FAIL indication, as follows:
Green = System within limits
Yellow = Over charging or under
charging
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