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SELECT DIAGNOSTIC GUIDE
Figure 22
Step 3: Using a clip-on ammeter, measure current flow (see clip-
on ammeter on Figure 22). If above 10.0 amps, the system is
working. Allow time for the liftgate batteries to charge. If below
10.0 amps and the voltage is below 14.0 volts, check the wiring
and connections to the DC/DC converter. If problem continues,
replace the DC/DC converter.
If there is no access to a clip-on ammeter, use a voltmeter to
monitor the voltage at the liftgate batteries for 2 to 5 minutes. If
the voltage rises, the DC/DC converter is functioning properly;
allow time for the batteries to charge. If no, check the wiring
and connections to the DC/DC converter. If problem continues,
replace the DC/DC converter.
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