150 XFC G4 2103335 Rev AB
Tools needed:
-Multi Meter (MM)
-Small slotted screwdriver
To perform an auxiliary equipment isolation test:
Disconnect solar panel charger or AC charger from J5 charger input.
Disconnect the battery pack cable from the J1 connector.
Substitute the known good battery.
Disconnect any auxiliary equipment that draws power from the flow computer or the battery pack. This is not limited
to, but should include, removing the J4 Communication connector if used.
Connect the current measurement troubleshooting cable (Part No. 2017350-xxx see Figure 100:), to the known good
battery.
Reconnect the battery to the circuit board.
Figure 100: Current Measurement Troubleshooting Cable
Connect to the troubleshooting cable with a MM and measure the average current.
Disconnect the battery pack if equal to or greater than 80 mA at 12 Vdc.
Reconnect an auxiliary item.
If the average current is less than the specification, replace the main electronic panel using the instructions in section,
6.8, Replacing the Main Electronic Board, on page 117.
Reconnect the battery pack.
Measure the average current with a MM.
Disconnect the battery pack, if the average current is less than or equal to the equipment specification.
Reconnect an additional Auxiliary item.
Repeat Step 14 until all of the auxiliary items have been tested, or the equipment causing the power drain has been
located.
Return to the Power Troubleshooting Flow Chart (Figure 97:), if power drain has not been located.
7.3.6 TFIO Module Isolation Test
If unit is configured to include TFIO modules, this test will need to be performed, if the flow computer battery pack output voltage
is not remaining consistent and no errors were found during the previous Auxiliary Equipment Isolation Test.
Tools needed:
-Multi Meter (MM)
-Small slotted screwdriver
To perform a TFIO isolation test:
TO BATTERY CABLE
TO CHARGER REGULATOR
RED DMM CONNECTOR
BLACK DMM CONNECTOR
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