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Page Title:
ONE OR BOTH STOPLIGHTS DO NOT ILLUMINATE |
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 TM 9-2320-366-20-1
INITIAL SETUP
Equipment Condition
Material/Parts
Engine shut down (TM 9-2320-366-10-1).
Packing, Preformed (Item 191, Appendix G)
Tools and Special Tools
Personnel Required
Tool Kit, Genl Mech (Item 46, Appendix C)
(2)
STE/ICE-R (Item 41, Appendix C)
Multimeter, Digital (Item 22, Appendix C)
References
TM 9-4910-571-12&P
START
KNOWN INFO
TEST OPTIONS
1.
Blackout stoplights illuminate.
Operational Test
Does one stoplight
POSSIBLE PROBLEMS
REASON FOR QUESTION
illuminate?
This question eliminates
Faulty lamp.
possible problems and
Faulty rear lights cable
determines where
assembly.
troubleshooting continues.
Faulty composite taillight
assembly.
NO
Faulty turn signal switch.
Faulty dashboard cable
assembly.
Faulty diode D1B.
YES
Go to step 10 of this fault.
Faulty diode D2A.
Faulty main light switch.
Faulty diode D1A.
Faulty relay K10.
KNOWN INFO
TEST OPTIONS
2.
Continuity Test or
Blackout stoplights illuminate.
STE/ICE-R Test #91
Main light switch OK.
Is continuity present
Diode D1A OK.
REASON FOR QUESTION
through lamp?
Relay K10 OK.
If continuity is not present,
lamp is faulty.
POSSIBLE PROBLEMS
Faulty lamp.
Faulty rear lights cable
assembly.
NO
Faulty composite taillight
assembly.
Faulty turn signal switch.
Faulty dashboard cable
assembly.
YES
Replace lamp (para 7-39).
Faulty diode D1B.
Faulty diode D2A.
Change 1
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