TEST OPTIONS
REASON FOR QUESTION
NO
YES
Voltage Test or
STE/ICE-R Test #89
KNOWN INFO
3.
WARNING
Read WARNING
on following page.
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 12 VDC present at circuit
breaker CB73 terminal 7?
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.
If 12 VDC is not present,
wire 1577 is faulty.
Repair wire 1577 from circuit
breaker CB73 terminal 7 to connector
PX15 socket J (para 2-40) or replace WTEC II
dashboard cable assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
TM 9-2320-365-20-1
2-642 Change 1
