(
. .
TM
5-5420-226-20-1
DETAILED
TROUBLESHOOTING
PROCEDURE
SUPPORT
SYSTEM
- VEHICLE
LIGHTING
Symptom-61
SERVICE
STOPLIGHT
WILL
NOT LIGHT.
m
This procedure
is to be performed
by
two
persons.
The
lead
person
is
referred
to as the first technician
and
shall direct the activity of the second
person called the second technician.
I
/
Check if B.O. stoplight
will light.
Second
Technician
(Operator’s
Station)
l
l
l
Firsl
l
Set MASTER
BATTERY
switch
ON.
On LIGHTING
CONTROL
switch
turn
LIGHTING
CONTROL
lever to B.O. MARKER.
Press
and hold brake
pedal.
Technician
(Rear
Grille
Doors)
Visually
check if B.O. stoplight
lights when brake pedal
is pressed,
m
3
‘!?3
,/“
(
“
NIGH1
VISION
ON
Q
\
OFF
(3
B O SELECTO
(ID
IR
~
MASTER
CONTROL_PANEL
B.O.
Does B.O. stoplight
light?
I
RIGHT TAILLIGHT
~
l Check stoplight
switch at
brake master
cyllnder
for
ID
continuity.
NO
l See Step @
.
\
TA107298
4-609
