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TM 9-2320-279-20-1
Troubleshooting Malfunctions (Cont)
2-15. TROUBLESHOOTING INSTRUCTIONS (CONT).
Table 2-9.
Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
ELECTRICAL SYSTEM (CONT)
7. STOPLIGHTS DO NOT WORK.
NOTE
If composite lights on vehicle are LED type, perform step (1.1).
Step 1.
Check for burned out stoplight lamp or damaged stoplight.
Remove lamp (para 7-60) and replace lamp if burned out.
Replace damaged stoplight (para 7-62).
Replace damaged high-mount stoplight (M978) (para 7-62.1).
Step 1.1. Check for damaged or defective LED composite lights.
Replace LED composite light (para 7-62).
Step 2.
Check for loose or damaged electrical connections at stoplights and stoplight switches.
Tighten loose connections. Replace damaged connections.
NOTE
If service brake stoplights do not operate, go to Step 3.
If trailer hand brake stoplights do not operate, go to Step 4.
If emergency tow stoplights do not operate, go to Step 5.
Change 5
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