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Page Title:
STOPLIGHTS AND BLACKOUT STOPLIGHTS DO NOT OPERATE (Cont) |
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 TM 9-2320-366-20-1
TM
e63. STOPLIGHTS AND BLACKOUT STOPLIGHTS DO NOT OPERATE (CONT)
e63.
KNOWN INFO
TEST OPTIONS
2.
Brakes operate.
Continuity Test or
Is continuity present
Engine starts.
STE/ICE-R #91
REASON FOR QUESTION
between relay K6
Circuit breaker OK.
POSSIBLE PROBLEMS
This question eliminates
terminal 85 and a known
Faulty dashboard cable
possible problems and
good ground while
assembly.
determines where
depressing brake pedal?
Faulty relay K6.
troubleshooting continues.
Faulty stoplight switches.
NO
YES
Go to step 5 of this fault.
WARNING
KNOWN INFO
TEST OPTIONS
Read WARNING
3.
Brakes operate.
Voltage Test or
on following page.
Engine starts.
STE/ICE-R #89
Is 12 vdc present at
REASON FOR QUESTION
Circuit breaker OK.
relay K6 terminal 30?
If 12 vdc is not present,
Stoplight switches OK.
POSSIBLE PROBLEMS
wire 1641 is faulty.
Faulty dashboard cable
assembly.
Faulty relay K6.
NO
Repair wire 1641 (para 2-45)
or replace WTEC II dashboard cable
YES
assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
2-774
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