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MDX-650P SOH
13
Decision
Interpretation
HIGH OUTPUT
Alternator voltage output exceeds the normal limits.
√ Make sure there are no loose connections and
the ground connection is normal. If there are no
connection problems, replace the regulator. Most
alternators have a built-in regulator that requires
replacing the alternator. In older vehicles that
use external voltage regulators, you may need to
replace only the voltage regulator.
EXCESSIVE
RIPPLE
Excessive AC ripple detected.
√ One or more diodes in the alternator is not
functioning or there is stator damage.
6. Press
6
to print the test results or to return to the Options Menu.
Test Messages
For a more decisive result, the tester may prompt you for additional
information. The messages in the following table may appear before the tester
can display a result.
Test Message
Interpretation
BAT. TEMPERATURE
Select ambient temperature above or below 32 ºF (0 ºC)
CHARGE STATE
Select before or after battery has been charged.
SURFACE CHARGE
DETECTED
Remove the surface charge before it begins testing.
Testing will resume after charge has been removed.
CHECK
CONNECTION
One or both clamps are not making proper contact with
the battery terminals.
ENGINE REV NOT
DETECTED PRESS
WHILE REVVING
Tester has not detected an increase in engine rpm
REVERSE
CONNECTION
Clamps are connected in the wrong polarity:
positive to negative or negative to positive.
SYSTEM NOISE
CHECK LOADS
In-vehicle testing. Tester has detected computer, ignition
noise or parasitic drain. Make sure all vehicle loads are
off including open doors and ignition switch.
UNSTABLE
BATTERY
Out-of-vehicle. Weak battery, should be charged and
retested.
WIGGLE
CLAMPS
Clamps are not making good contact with
battery terminals
Summary of Contents for MDX-650P SOH
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