Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
18
Chapter 4: After New Battery Install DSS-5000
Decision Action
Charge
Battery
The starter voltage is low and the battery is
discharged. Fully charge the battery and repeat the
starter system test.
Replace
Battery
(If the battery test result was (REPLACE or BAD
CELL.) The battery must be replaced before testing
the starter.
Low Current
The starter voltage is high but the cranking amps are
low.
No Start
The engine didn’t start and the test was aborted or
the vehicle’s starting prole was not detected and the
Starter Test was skipped.
Alternator Test Results
Test Results - Alternator
93%
Send Results
Done
Test Results - Alternator
93%
14.4V
12.1A
14.2V
33.5A
No Load Loaded
0.2V
0V
0.2V
Ripple
Send Results
Done
Test Results - Alternator Test
Test Results - Alternator
Decision Action
CHARGING
NORMAL
The output from the alternator is normal.
NO OUTPUT
No output detected. Check belts to ensure alternator
is rotating when engine is running.
√ Check all alternator connections including to
the battery. Clean or replace if necessary and
retest.
√ If the belts and connections are in good working
condition, replace alternator or external voltage
regulator.
LOW
OUTPUT
Alternator not providing enough current to power
electrical loads and charge the battery.
√ Check belts to ensure the alternator is rotating
with the engine running.
√ Check alternator connections to and from the
battery. If loose or heavily corroded, clean or
replace the cable and retest.
HIGH
OUTPUT
Alternator voltage to the battery exceeds normal
limits of a functioning regulator.
√ Check for loose and normal ground
connections. If no connection problems are
found, replace the regulator.
The normal high limit of a typical automotive
regulator is 14.5 volts +/–0.5. Refer to the
manufacturer specications for the correct limit,
which may vary by vehicle type.
Test Results - Diode
Decision Action
EXCESSIVE
RIPPLE
One or more diodes in the alternator are not
functioning or there is stator damage, which is
shown by an excessive amount of AC ripple current
supplied to the battery.
√ Make sure the alternator mounting is sturdy and
that the belts are in good shape and functioning
properly. If the mounting and belts are good,
replace the alternator.
OPEN PHASE
Replace the alternator.
OPEN DIODE
SHORTED
DIODE
To Next Page
Loading...
Need help?
General
