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Page Title:
BACKUP LIGHT DOES NOT ILLUMINATE (CONT) |
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 TM 9-2320-366-20-1
e55. BACKUP LIGHT DOES NOT ILLUMINATE (CONT)
KNOWN INFO
TEST OPTIONS
11.
REVERSE WARNING Relay
Circuit breaker CB70 OK.
Replacement Test
Circuit breaker CB73 OK.
Do backup lights operate
REASON FOR QUESTION
Both turn signals illuminate.
with new REVERSE
Engine starts.
If backup lights operate
WARNING relay installed in
Transmission reverse (R)
with new REVERSE
WTEC II VIM?
range OK.
WARNING relay installed,
Backup light lamps OK.
REVERSE WARNING relay
Backup light assembly OK.
is faulty. If backup lights
WTEC II transmission controls.
do not operate with new
WTEC II cab transmission
REVERSE WARNING relay
harness OK.
installed, WTEC II TEPSS
WTEC II dashboard cable
is faulty.
assembly OK.
Rear lights cable assembly
NO
OK.
POSSIBLE PROBLEMS
Faulty REVERSE
Replace WTEC II
WARNING relay in WTEC
YES
TEPSS (para 8-2).
II VIM.
Faulty WTEC II
transmission ECU
pushbutton shift selector.
Replace REVERSE WARNING
relay in WTEC II VIM (para 8-6).
2-690
Change 1
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