Isolating A Circuit Causing A Current Drain - Fluke 88 V User Manual

Model 88 V
Users Manual

Isolating a Circuit Causing a Current Drain

1. Insert the test leads in the input terminals shown in
Figure 17.
e
2. Turn switch to .
3. Disconnect battery terminal and touch probes as
shown.
Use a battery isolator momentarily while
connecting the meter to retain PCM memory.
4. Isolate circuit causing current drain by pulling out one
fuse after another while reading the display.
5. Current reading will drop when the fuse on the bad
circuit is pulled.
6. Reinstall fuse and test components (including
connectors) of that circuit to find defective
component(s).
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Note
XWWarning
To avoid electric shock or personal injury, do
not attempt this test on a lead-acid battery
that has recently been recharged.
XWCaution
Do not crank the engine or operate
accessories that draw more than 10 A. You
could blow the fuse in the Meter.