User Manual

Additional Functions
BATTERY/ALTERNATOR MONITOR
68 3040e
 A “countdown” message shows on
the diagnostic tool’s display while
the battery check is in process.
 If battery voltage is less than 12.1
volts, an advisory message shows
on the diagnostic tool’s display.
Press the M button to return to the
Main Menu. Turn the ignition off and
disconnect the diagnostic tool from
the vehicle. Fully charge the battery,
then repeat the battery check.
 If battery voltage is greater than
12.1 volts, an “instructional”
message shows on the diagnostic
tool’s display.
7. Turn the vehicle’s headlights off, the
press the ENTER
button to continue.
 An “instructional” message shows
on the diagnostic tool’s display.
8. Start the vehicle’s engine. Allow the
engine to run for several seconds, then
turn the engine off. Repeat for a total of
three “start/stop” cycles.
If the If the diagnostic tool did
not detect “cranking status” for
the vehicle’s engine, an
advisory message shows on
the diagnostic tool’s display.
Press the ENTER
button
to repeat the battery check, or,
press the M button to return to
the Main Menu.
9. 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
10. Press the M button to return to the Main Menu.
To perform an alternator system check:
1. With the Scan Tool on the Code Retrieval screen, press and release
the M button.