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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
18.
WTEC III Relay K25
Circuit breaker CB70 OK.
Replacement Test
Circuit breaker CB73 OK.
REASON FOR QUESTION
Do backup lights operate
Both turn signals illuminate.
with new WTEC III relay
Engine starts.
If backup lights operate
K25 installed?
Transmission reverse (R)
with new WTEC III relay
range OK.
K25 installed, WTEC III
Backup light lamps OK.
relay K25 is faulty. If
Backup light assembly OK.
backup lights do not
WTEC III transmission controls.
operate with new WTEC III
WTEC III dashboard cable
relay K25 installed,
assembly OK.
WTEC III transmission ECU
Rear lights cable assembly OK.
is faulty.
POSSIBLE PROBLEMS
Faulty WTEC III relay K25.
NO
Faulty WTEC III
transmission ECU.
Replace WTEC III transmission
YES
ECU (para 8-7).
Replace WTEC III relay K25 (para 7-9).
2-704
Change 1
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