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Chapter 5: System Test
Before starting the test, inspect the alternator drive belt. A belt
that is glazed or worn, or lacks the proper tension, will prevent
the engine from achieving the rpm levels needed for the test.
The System Test includes 4 tests that provide a complete
diagnosis of the vehicle's electrical system:
•
BATTERY TEST
•
STARTER TEST
•
ALTERNATOR TEST
•
DRAIN TEST
Battery Test
The System Test includes a test of the battery to eliminate it as
the cause of starting or charging problems. See Chapter 4 for
the Battery Test procedure.
Starter Test
Press the YES soft key to proceed.
1.
2.
Start the vessel's engine when prompted. If after the ves-
sel started and the results do not appear after approxi-
mately 25 seconds, press the NO START soft key.
3.
The analyzer displays one of the decisions and the results
in a series of screens.
NOTE: In some cases, the tester may not detect the
vessel's starting profile. It will display the soft key
STARTED
options
STARTED
, the analyzer skips to the Alternator
Test. If you select NO START, the test process ends.
Midtronics B.V.
Hoofdveste 6–8
Chapter 5: System Test
NO START
and
. If you select
Houten NL
Starter System Test Results
The results include the battery analysis. Use the UP () or
DOWN () ARROW key to scroll to each screen. See the
Starter System Decision table for an explanation of the starter
system decisions. To continue testing, press the NEXT soft key.
Starter
decision
Starter System Test Decisions
Decision
CRANKING
The starter voltage is normal and the
NORMAL
battery is fully charged.
LOW VOLTAGE
The starter voltage is low and the battery
is fully charged.
CHARGE
The starter voltage is low and the battery
BATTERY
is discharged. Fully charge the battery
and retest the starter system.
REPLACE
Replace the battery and retest before
BATTERY
testing the alternator test..
NO START
The engine did not start and the test was
aborted.
CRANKING
The tester didn't detect the vessel's
SKIPPED
starting profile and skipped the Starter
Test.
14
X axis = time
Action
www.midtronics.com
MAR-800P
Average
cranking
voltage
Cranking
time in mil-
liseconds
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