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Press OK button to do the test again. The scan tool will prompt
8.
to shutdown the engine.
9.
Follow the steps above to do the test again.
If the scan tool is not connected to vehicle or battery, it will
display a message as below. Check that EOBD connector is
securely connected to the DLC, or battery contact is clean and
well connected, then continue the test procedure.
8.2 Charging System Test
All late-model vehicles need a constant supply of power to run their
electronic components, such as computers, daytime running lights
and stereo systems. Most 12-volt charging systems produce more
than 12 volts, some as high as 14.5 volts of DC power. Many
Figure 8.8
Figure 8.9
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