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Page Title:
BLACKOUT MARKER LIGHT(S) AND/OR TAILLIGHT(S) DO NOT OPERATE - continued |
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 TM 10-3930-673-20-1
17. BLACKOUT MARKER LIGHT(S) AND/OR TAILLIGHT(S) DO NOT OPERATE (CONT).
2
WARNING
KNOWN INFO
TEST OPTIONS
Read WARNING on
Turn signals OK.
Voltage test.
following page.
Floodlights OK.
STE/ICE-R #89.
Bulb OK.
REASON FOR QUESTION
Is 24 vdc present at faulty
POSSIBLE PROBLEMS
This question eliminates possible
blackout taillight or marker
Connector P2 faulty.
problems and determines where
light socket?
Connector J2 faulty.
troubleshooting continues.
Wire 9 faulty.
Circuit breaker CB6 faulty.
Wire 1 faulty.
Run relay faulty.
Wire 3 faulty.
Circuit breaker CB4 faulty.
Wire 40 faulty.
Blackout light switch faulty.
Go to Step 3 of this
Wire 45 faulty.
NO
fault.
Connector J1 faulty.
Connector P1 faulty.
Socket(s) faulty.
YES
Go to Step 14 of
this fault.
3
KNOWN INFO
TEST OPTIONS
Turn signals OK.
Voltage test.
Is 24 vdc present at the
Floodlights OK.
STE/ICE-R #89.
starter motor solenoid where
Bulb OK.
REASON FOR QUESTION
wire 9 connects?
POSSIBLE PROBLEMS
If 24 vdc is not present, service or
Connector P2 faulty.
replace battery cable.
Connector J2 faulty.
Wire 9 faulty.
Circuit breaker CB6 faulty.
Wire 1 faulty.
Run relay faulty.
Wire 3 faulty.
Circuit breaker CB4 faulty.
Wire 40 faulty.
Blackout light switch faulty.
Service or replace
NO
Wire 45 faulty.
battery cable
Connector J1 faulty.
(Para 8-42).
Connector P1 faulty.
Socket(s) faulty.
YES
2-306
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