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TM 10-3930-643-20
ELECTRICAL SYSTEM TROUBLESHOOTING AND MAINTENANCE. (cont)
5-7. Light System Troubleshooting. (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
b.
HEADLIGHT(S) DOES NOT OPERATE. (cont)
Step 2. Test the continuity of the headlight assembly. Connect the
multimeter to terminal at the back of the light housing and to
ground.
If the multimeter needle does not move, the circuit does not have
continuity. Replace headlight assembly, refer to paragraph 5-34.
Step 3. Test the continuity of the wire assembly. Disconnect connector
from instrument panel harness lead, as shown. Connect the
multimeter to Terminal A and to connector pin.
If the multimeter needle does not move, the circuit does not have
c o n t i n u i t y . I d e n t i f y a s a d e f e c t i v e w i r e a n d c o n t a c t D i r e ct
Support.
Step 4. Test the continuity of the front service lights switch. Turn
front service light switch to ON position.
multimeter to the two terminals at the back of the switch.
If the multimeter needle does not move, the circuit does not have
c o n t i n u i t y . R e p l a c e f r o n t s e r v i c e l i g h t s s w i t c h , r e f e r t o p a r a g r a ph
5-20.
5-28
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