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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
5.
Continuity Test or
Circuit breaker CB70 OK.
STE/ICE-R Test #91
Circuit breaker CB73 OK.
Is continuity present from
REASON FOR QUESTION
Both turn signals illuminate.
REVERSE WARNING relay
Engine starts.
If continuity is not present,
terminal 86 to terminal 85?
Transmission reverse (R)
REVERSE WARNING relay
range OK.
is faulty.
Backup light lamps OK.
Backup light assembly OK.
WTEC II transmission controls.
POSSIBLE PROBLEMS
NO
Faulty dashboard cable
assembly.
Faulty WTEC II cab
transmission harness.
Replace REVERSE WARNING
Faulty rear lights cable
YES
relay in WTEC II VIM (para 8-6).
assembly.
Faulty REVERSE
WARNING relay in WTEC
II VIM.
Faulty WTEC II
transmission ECU
pushbutton shift selector.
2-678
Change 1
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