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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)
WARNING
CAUTION
Read WARNING and
CAUTION on
KNOWN INFO
TEST OPTIONS
following page.
2.
Voltage Test or
Circuit breaker CB70 OK.
STE/ICE-R Test #89
Circuit breaker CB73 OK.
REASON FOR QUESTION
Is 12 VDC present at
Both turn signals illuminate.
connector P87?
Engine starts.
If 12 VDC is present, backup
Transmission reverse (R)
light assembly is faulty.
range OK.
Backup light lamps OK.
POSSIBLE PROBLEMS
Faulty backup light
assembly.
NO
Faulty dashboard cable
assembly.
Faulty WTEC II cab
transmission harness.
Faulty rear lights cable
YES
Go to step 3 of this fault.
assembly.
Faulty REVERSE
WARNING relay in WTEC
II VIM.
Faulty WTEC II
transmission ECU
pushbutton shift selector.
Faulty WTEC III relay K25.
Faulty WTEC III
transmission ECU.
Replace backup light
assembly (para 7-36).
2-672
Change 1
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