TEST OPTIONS
NO
YES
4.
KNOWN INFO
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
Faulty WTEC II cab
transmission harness.
Faulty rear lights cable
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.
Is vehicle equipped with
WTEC II transmission
controls?
Go to step 12 of this fault.
Visual Inspection
REASON FOR QUESTION
This question helps
eliminate possible
problems and determines
where troubleshooting
continues.
e53. BACKUP LIGHT DOES NOT ILLUMINATE (CONT)
Circuit breaker CB70 OK.
Circuit breaker CB73 OK.
Both turn signals illuminate.
Engine starts.
Transmission reverse (R)
range OK.
Backup light lamps OK.
Backup light assembly OK.
TM 9-2320-365-20-1
2-644 Change 1
