TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
20. ALL LIGHTS DO NOT WORK - CONTINUED
WARNING
Although KEY SWITCH must be on and battery ground cable connected to test electrical
circuit voltage, turn off KEY SWITCH and disconnect battery ground cable before doing
resistance tests or replacing parts. This will keep you from getting shocked and prevent
damage to parts and equipment.
NOTE
Scrape painted surfaces to bare metal before connecting test leads to ensure correct
multimeter readings.
Step 9.
Set multimeter to 20 vdc scale. Connect red test lead to terminal (1) on marker light circuit breaker (2)
and black test lead to ground. Check for 11 to 13 vdc on multimeter. Disconnect test leads.
a.
If multimeter does not read 11 to 13 vdc, replace marker light circuit breaker (2)
(page 2-764).
b.
If multimeter reads 11 to 13 vdc, go to step 10.
Step 10.
Set multimeter to 20 vdc scale. Connect red test lead to terminal (3) on headlight circuit breaker (4) and
black test lead to ground. Check for 11 to 13 vdc on multimeter. Disconnect test leads.
a.
If multimeter does not read 11 to 13 vdc, replace headlight circuit breaker (4) (page
2-762).
b.
If multimeter reads 11 to 13 vdc, go to step 11.
Step 11.
Set multimeter to 20 vdc scale. Connect red test lead to terminal (5) on tail and panel light circuit breaker
(6) and black test lead to ground. Check for 11 to 13 vdc on multimeter. Disconnect test leads.
a.
If multimeter does not read 11 to 13vdc, replace tail and panel light circuit breaker
(6) (page 2-760).
b.
If multimeter reads 11 to 13 vdc, go to step 12.
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