TM
5-5420-226-20-1
Symptom-64
DETAILED
TROUBLESHOOTING
PROCEDURE
FROM
STEP
SUPPORT
SYSTEM
- VEHICLE
LIGHTING
o2
(Continued)
I
1
Check front accessory
harness connector
(CKT 24) at
bulkhead
disconnect
for electrical
power.
1
Second
Technician
(Operators
Station)
l Set MASTER
BATTERY
switch
OFF.
First
Technician
(Commanders
Station)
l Displace
front
accessory
harness
connector
(CKT
24) at bulkhead
disconnect
(page
10-269).
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 contact D (CKT 24) of
front
accessory
harness
connector
and black
probe
to
ground.
Second
Technician
(Operators
Station)
l Set MASTER
BATTERY
switch
ON.
m
__
_
FOR CLARITY
QUADRANT
4SSEMBLIES
NOT SHOWN
D
v&
BULKHEAD
DISCONNECTS
(COMMANDERS
STATION)
-
TA107324
4-635