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Chapter 12: Test Cable Maintenance
EXP-800
Testing Resistance in the Cable Set
If the analyzer frequently displays CHECK CLAMP CONNECTION!
you may have an intermittent open circuit along one or both
of the battery test cables. You can check the circuit with a
simple test. The test requires an ohmmeter and a wire or paper
clip if the ohmmeter probes are too large to insert into the pin
holes. You will also need to a pencil or plastic marker to keep
the clamp jaws apart.
Test Procedure
You are testing the continuity of the following end points:
•
The positive (RED clamp jaw without teeth and its corre
-
sponding pin hole.
•
The positive (RED) clamp jaw with teeth and its corre
-
sponding pin hole.
•
The negative (black) clamp jaw without teeth and its cor
-
responding pin hole.
•
The negative (black) clamp jaw with teeth and its corre
-
sponding pin hole.
1. Grip a pencil with the clamp as shown in the figure
Con-
tacts for Clamp Jaws
. Do not grip the metal part of the
eraser or any area that may conduct current.
2. Insert a probe tip into the hole designated “NO TEETH” for
the color (BLACK or RED) of the clamp you are testing as
shown in the figure “Contacts for Cable Connector.”
3. Touch the toothless jaw of the clamp with the other probe
tip. Wiggle the battery test cables. The resistance reading
should be less than 1 Ω.
4. Repeat the test for the “TEETH” side of the circuit, this time
touching the jaw with teeth. Insert the other probe tip
into the “teeth” pin hole. Wiggle the battery test cables.
The resistance reading should be less than 11 Ω.
Contacts for Cable Connector
Orientation of
arrow on cable
connector
BLACK clamp,
NO teeth
RED clamp,
NO teeth
RED clamp,
TEETH
BLACK clamp,
TEETH
Contacts for Small Clamp
Contact point for
testing at “NO
TEETH”
Contact point for
testing at “TEETH”
Summary of Contents for EXP-800
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