electronic ignitions will not operate efficiently using only 12 volts,
and the engine will under-perform, reducing horsepower and fuel
efficiency. To ensure the battery will remain charged to start the
vehicle and power the accessories whilst running, test the integrity
of the 12-volt charging system periodically.
Before starting the test, inspect the alternator drive belt. A belt that is
glazed or worn, or lacks the proper tension, will prevent the
alternator from achieving the RPM levels needed for the test.
CHARGING SYSTEM TEST PROCEDURE
A. Connecting to DLC with EOBD connector.
Follow the steps to complete the test:
1. Turn off all of the vehicle's electrical accessories.
2. Connect the tool to vehicle‟s DLC with EOBD connector.
3. Turn on the scan tool and wait for Main Screen to appear.
(Figure 3.1)
4. Use the UP/DOWN scroll button to select START TEST from
main screen. (Figure 3.1) Then select CHARGE TEST in the
submenu. The screen will show as below.
Figure 8.10
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