TM 5-2410-241-23-1
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TEST STEP 1: GROUND CABLES CONTINUED
7. Using a digital multimeter (WP 0296), measure voltage between positive battery post (Figure 3, Item 1) and
battery disconnect switch ground terminal (Figure 3, Item 2). Voltage drop should be within 1 volt of value
recorded in step 3, or the ground is faulty.
a. If voltage drop is greater than 1 volt of value recorded in step 3, proceed to step 8 to isolate ground fault.
b. If voltage drop is within 1 volt of value recorded in step 3, grounding cable (Figure 3, Item 3) from frame to
the battery disconnect switch is faulty. Replace grounding cable from frame to the battery disconnect
switch (WP 0162).
8. Using a digital multimeter (WP 0296), measure voltage between positive battery post (Figure 3, Item 1) and
battery disconnect switch ground to batteries (Figure 3, Item 1). Voltage drop should be within 1 volt of value
recorded in step 3, or the ground cable is faulty.
a. If voltage drop is greater than 1 volt of value recorded in step 3, ground cables from batteries are faulty.
Replace battery ground cable to disconnect switch (WP 0160).
b. If voltage drop is within 1 volt of value recorded in step 3, battery disconnect switch is faulty. Replace
battery disconnect switch (WP 0162).
Figure 3. Battery Disconnect Switch.
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