TM
5-5420-226-20-1
Symptom-69
DETAILED
TROUBLESHOOTING
PROCEDURE
T
SUPPORT
SYSTEM
- VEHICLE
LIGHTING
(Continued)
.
Check B.O. SELECTOR
switch for continuity
(switch in
IR positon).
First
Technician
(Operator’s
Station)
l Set MASTER
BATTERY
switch
OFF.
l Disconnect
master
control
panel
accessories
harness
connectors
(CKT
514-515
and CKT
19) from
B.O.
SELECTOR
switch.
l Set multimeter
to OHMS
Xl scale, and “zero”’ meter or
use STE/ICE
Test
No. 91 (page 4-83).
l Connect red probe of meter to center contact and black
probe
to top contact
of B.O. SELECTOR
switch.
l Check if meter indicates continuity.
Does meter indicate
continuity?
4
o
-m
+
o
4
=\-
L//
ix –
-7
C’KT 19
l Replace
B.O.
SELECTOR
switch
(page
10-58).
l Connect
basket-control
panel
accessories
harnesa to master
control
panel.
/
Replace
maater
control
panel
accessories
harness
(page
10-91).
r
TA107354
4-665
