System Test; Battery Load And Impedance Test - Snap-On MicroVAT Benutzerhandbuch

System Test

Once the System Test is initiated, the MicroVAT tester is
capable of testing the battery, starting and charging
systems during the same test procedure. Use the test
procedure and information in this section to determine if
there are any problems with the vehicle battery, starter,
alternator, or wiring. Refer to individual test procedures
in this section for additional information.
   
Testing Tips
Refer to
Inspection on page E-8
tests.
— If amp probe is connected for testing, MicroVAT
tester displays amp probe connection location
before each test. If the wrong probe is attached,
the tester displays an error message.
1. Push ON/RESET button to turn tester ON.
2. Connect leads to battery, observing proper polarity.
3. Select SYSTEM TEST using scrollwheel and
selection arrow. Press Y (YES) button to advance to
test.
   
MicroVAT tester checks for proper
connections. If a bad or a non-connection is
determined, MicroVAT tester displays
CONNECT LEADS.
4. MicroVAT tester displays ENTER BATTERY SIZE.
   
To change battery unit measurement, go to the
SET-UP/OPTIONS MENU and use the
scrollwheel to choose SELECT BAT UNITS.
Press the Y (YES) button to continue and,
using scrollwheel, select the desired units.
Press the Y (YES) button to enter the selection.
Press N (NO) button to exit.
5. Turn scrollwheel to change displayed battery rating
to desired value, then press Y (YES) button to enter
displayed unit.
   
In case of emergency, (tester begins smoking
or sparking, or if other signs of overheating or
possible damage to tester, battery, or vehicle
occur), stop testing immediately by removing
the leads from the battery. To stop testing in
non-emergency situations, press N (NO) button
to reset internal software.
   
If a battery is marginal, MicroVAT tester asks
for an ambient temperature reading.
6. MicroVAT tester displays BATTERY TEST - IN
PROGRESS.
page E-7 Visual
on and
, before performing any
7. MicroVAT tester prompts user to place the amp
probe around the negative or positive battery cable,
if amp probe is connected.
8. MicroVAT tester prompts user to start engine.
9. MicroVAT tester displays Testing alternator at idle
conditions.
10. MicroVAT tester prompts user to increase engine
idle to 1800 rpm and hold.
— Once the MicroVAT tester sees an increase in
engine rpm, it begins to test the alternator at load
conditions.
11. MicroVAT tester displays system test completed -
turn off engine.
12. Testing is done. If details are desired press Y (YES)
button and use scrollwheel, or press N (NO) button
to return to menu options.
— If print out is desired, have printer turned ON,
align MicroVAT tester infrared LED with printer
infrared window and press Y (YES) button.
— Keep MicroVAT tester pointed at the printer until
printing is complete.
Battery Load and Impedance
Test
The MicroVAT tester performs battery load and
impedance tests using preset internal load values that
are applied and removed automatically during the testing
sequence. These tests determine if the battery has
sufficient capacity. When testing is completed, the
message display indicates the test results. Use the test
procedures and information in this section to determine if
the battery should be replaced.
   
Refer to Testing Tips
Inspection on page E-8
tests.
   
Some batteries may indicate a high percentage
reading of CCA but still needs to be charged.
   
If a battery is in a location other then the
engine compartment, connect MicroVAT tester
clamps directly to the battery terminals. Do not
test the battery through any extended terminals
or cables.
1. Push ON/RESET button to turn tester ON.
2. Select INDIVIDUAL TEST using scrollwheel and
selection arrow. Press Y (YES) button to display test
selection.
3. Connect leads to battery, observing proper polarity.
MicroVAT™
on page E-7 and Visual
, before performing any
E-9