TM
5-5420-226-20-1
I
DETAILED
TROUBLESHOOTING
PROCEDURE
Symptom-61
SUPPORT
SYSTEM
- VEHICLE
LIGHTING
T
(Continued)
~Check
rear accessory
harness (CKT 22) at left taillight
assembly
for electrical
power.
Second
Technician
(Operator’s
Station)
l Set MASTER
BATTERY
switch
OFF.
First
and Second
Technicians
(Rear
Grille
Doors)
l Remove transmission
shroud
(page
9-2).
First
Technician
(Rear
Grille
Doors)
l Disconnect
rear accessory
harness
connector
(CKT
22)
from
left 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
22) and black probe to vehicle ground.
Second
Technician
(Operator’s
Station)
l On LIGHTING
CONTROL
switch,
turn LIGHTING
CONTROL
lever to STOPLIGHT.
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.
Does meter indicate
18 to 30 volts dc?
\
1
w
LEFT TAILLIGHT
CONNECTORS
Replace socket and wiring
assembly in left taiiilght
(page 10-298).
TA107299
4-610
