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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
Read WARNING
KNOWN INFO
TEST OPTIONS
on following page.
3.
Voltage Test or
Circuit breaker CB70 OK.
STE/ICE-R Test #89
Circuit breaker CB73 OK.
REASON FOR QUESTION
Is 12 VDC present at circuit
Both turn signals illuminate.
breaker CB73 terminal 7?
Engine starts.
If 12 VDC is not present,
Transmission reverse (R)
wire 1577 is faulty.
range OK.
Backup light lamps OK.
Backup light assembly OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
NO
assembly.
Faulty WTEC II cab
transmission harness.
Faulty rear lights cable
assembly.
Repair wire 1577 from circuit breaker CB73
Faulty REVERSE
terminal 7 to connector PX15 socket J (para 2-45)
YES
WARNING relay in WTEC
or replace WTEC II dashboard cable assembly
II VIM.
(para 7-10) or WTEC III dashboard cable
Faulty WTEC II
assembly (para 7-11).
transmission ECU
pushbutton shift selector.
Faulty WTEC III relay K25.
Faulty WTEC III
transmission ECU.
2-674
Change 1
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