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TM 10-3930-643-20
ELECTRICAL SYSTEM TROUBLESHOOTING AND MAINTENANCE. (cont)
5-7. Light System Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
a. FRONT WORK LIGHT(S) DOES NOT OPERATE.
WARNING
Always disconnect battery ground cable before working on electrical
components of this equipment.
DEATH
or SEVERE INJURY may result if you fail to observe this procedure. If
you receive an electrical shock, seek medical help.
Step 1.
Remove retainer and check the bulb.
I f t h e f r o n t w o r k l i g h t b u l b i s b u r n e d o u t , r e p l a c e , r e f e r to
paragraph 5-34.
N O TE
Before proceeding with continuity test, refer to paragraph 2-13.e. for
i n i t i a l s e t u p i n s t r u c t i o n s.
Step 2. Test the continuity of the work light assembly.
Connect the
multimeter to terminal at the back of light housing
a n d to
ground.
If the multimeter needle does not move, the circuit does not have
continuity. Replace work light assembly, refer to paragraph 5-34.
Step 3.
Test the continuity of the wire assembly.
Disconnect two pin
connector from instrument panel harness, as shown.
Connect the
multimeter to Terminal A and to connector pin.
5-25
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