TM
5-5420-226-20-1
DETAILED
TROUBLESHOOTING
PROCEDURE
SUPPORT
SYSTEM
- VEHICLE
LIGHTING
Symptom-59
LIGHTS
CONTROLLED
BY LIGHTING
CONTROL
SWITCH
WILL
NOT LIGHT (PANEL
SWITCH
AT OFF, BRIGHT,
OR DIM).
I
#Check
basket-light
switch
harness
(CKT
15)
at
LIGHTING
CONTROL
switch
for electrical
power.
Technician
(Operator’s
Station)
l
l
l
l
l
l
l
Set MASTER
BATTERY
switch
OFF,
Dispiace
master
control
panel
(page
10-33).
Disconnect
basket-light
switch
harness
connector
from
LIGHTING
CONTROL
switch
connector,
Set multimeter
to measure
18 to 30 volts dc, or use STE/
ICE Test
No,
89 (page
4-81).
Connect
red probe of meter
to contact
F (CKT
15) of
harness
connector.
Connect
black
probe
to ground.
Set MASTER
BATTERY
switch
ON.
Check
if meter
indicates
18 to 30 volts dc.
Does meter
indicate
18 to 30 volts dc?
(
r
GROUND
\
\c:’’Lo.”:,j
‘+”
\
\
‘CONTACT
F (CKT 15)
MASTER
CONTROL
PANEL
(REAR VIEW)
l Check
basket-light
switch
harness
(CKT
15)
for
continuity
from
intermediate
connector
to
connector
at
LIGHTING
CONTROL
switch.
l See Step @
.
, TA107288
4-599
.
