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TM 10-3930-643-20
ELECTRICAL SYSTEM TROUBLESHOOTING AND MAINTENANCE. (cont)
5-7 l
Light System Troubleshooting. (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
a. FRONT WORK LIGHT(S) DOES NOT
If the multimeter needle
c o n t i n u i t y . I d e n t i f y as
Support.
Step 4.
Test the continuity
f r o n t s e r v i c e l i g ht
OPERATE. (cont)
does not move, the circuit does not have
a defective
wire
and
c o n t a c t D i r e ct
of the front service lights switch.
Turn
switch to ON position.
Connect the multi-
meter to the two terminals at the back of the switch.
If the multimeter needle does not move, the circuit does not have
continuity. Replace front service lights switch, refer to paragraph
5-20.
Step 5.
Test the front service lights wire assembly. With the instrum-
ent panel wiring harness disconnected from the
f r o n t l i g h t
harness (refer to step 3), connect the multimeter to Terminal B
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.
5-26
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