Midtronics DSS-5000 Instruction Manual

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
13
Chapter 2: In Vehicle TestDSS-5000 Toyota Lexus
Test Results - Starter
Decision Action
Cranking
Normal
The starter voltage is normal and the battery is
fully charged.
Low Voltage
The starter voltage is low and the battery is
fully charged.
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 prole was not
detected and the Starter Test was skipped.
Alternator Test Results
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 specications 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

Midtronics DSS-5000 Specifications

General

Brand	Midtronics
Model	DSS-5000
Category	Diagnostic Equipment
Language	English