TROUBLESHOOTING
If the display flashes or shows one flashing letter, the battery is
too low (less than 8 volts) to test. Fully charge the battery and
retest.
A message that alternates between
bAd
and
CELL
means one or
more battery cells are bad. Replace the battery.
A
conn
message means there is a bad connection. Disconnect
the clamps and reconnect. Make sure to rock the clamps back
and forth to make a good connection.
If the red LED lights
when you test in-vehicle
, there may be a
poor connection between the battery cables and the vehicle.
Disconnect the battery cables and retest at the battery posts
before replacing the battery.
Excessive electromagnetic interference may cause the tester to
reset during testing. Before retesting, reconnect the clamps and:
•
Make sure all vehicle loads and the ignition are off.
•
Move away from the noise source, which may be a charger or
other high-current device.
•
If you are unable to find the noise source, fully charge the
battery and retest at the battery posts. If the red LED lights
again, replace the battery.
•
4
•
