TEST OPTIONS
REASON FOR QUESTION
NO
YES
Voltage Test or
STE/ICE-R Test #89
KNOWN INFO
13.
POSSIBLE PROBLEMS
Is 12 VDC present at
WTEC III relay K25
terminal 30?
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.
WTEC III transmission controls.
If 12 VDC is not present,
wire 1903 is faulty.
WARNING
Read WARNING
on following page.
Repair wire 1903 from WTEC III
relay K25 terminal 30 to circuit breaker
CB73 terminal 8 (para 2-40) or replace WTEC III
dashboard cable assembly (para 7-11).
TM 9-2320-365-20-1
2-662 Change 1
Faulty WTEC III relay K25.
Faulty WTEC III dashboard
cable assembly.
Faulty rear lights cable
assembly.
Faulty WTEC III
transmission ECU.