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BESA-12P User’s manual
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32 -
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AETOOL LTD.
Page 23
9.0
– Grounding Test
The engine body and the vehicle chassis are always connected to the battery
negative terminal to provide the electrical return path (grounding) for all the
electrical components. Due to the surrounding environmental effect, the surface
contacts of these joints or connections of these circuits will subject to oxidation and
corrosion in a matter of time rendering them to have high resistance in it. One
typical example is the connection at the battery terminals where oxidation and
corrosion takes place very often. If these contacts were no good then it will pose a
lot of electrical problems to the vehicle.
To check the grounding condition, this Analyser will measure the resistance from
the engine body contact to the battery terminal then it will display the results and
the recommendations.
9.1
– Start Testing
1. Make sure that the engine is switched OFF. Attach the clips onto the battery
terminal posts and the analyser will power up and lights up the LCD display
screen as shown (Fig.40).
2. It will run through a self-test and when completed it displays the Main Menu
as shown: (Fig. 41)
Figure 40
Figure 41
Select Menu
New: Clear Memory
Continue Testing
View last Test
Setup Menu
Then press [Enter].
BESA-12
BATTERY ELECTRICAL
SYSTEM ANALYSER