TM
5-5420-226-20-1
Symptom-62
DETAILED
TROUBLESHOOTING
PROCEDURE
(
.—
SUPPORT
SYSTEM
- VEHICLE
LIGHTING
(Continued)
Check
rear accessory
harness
(CKT 23) at right
taillight
assembly
for electrical
power.
Second
Technician
(Operator’s
Station)
l Set MASTER
BATTERY
switch
OFF.
First
and Second
Technician
(Rear
Grille
Doors)
l Remove transmission
shroud
(page
9-2).
First
Technician
(Rear
Grille
Doors)
l Disconnect
rear accessory
harness
connector
(CKT
23)
from
right
taillight
assembly.
l Set multimeter
to measure
18 to 30 volts dc, or use STE/
ICE Test
No.
89 (page 4-81).
l Connect
red probe
of meter
to rear accessory
harness
connector
(CKT
23) and black
probe
to ground.
Second
Technician
(Operator’s
Station)
l On LIGHTING
CONTROL
switch
turn
LIGHTING
CONTROL
lever to B,O. MARKER.
l Set MASTER
BATTERY
switch
ON.
l Press and hold brake pedal.
First
Technician
(Rear
Grille
Doors)
l Check if meter indicates
18 to 30 volts dc while brake
pedal
is pressed.
4
Does meter
indicate
18 to 30 volts dc?
E
Hkn--
(page 1-298).
8
4-619
.
I
