TM
5-5420-226-20-1
Symptom-67
DETAILED
TROUBLESHOOTING
PROCEDURE
T
SUPPORT
SYSTEM
- VEHICLE
LIGHTING
(Continued)
.
Check
foot
DIMMER
SWITCH
for continuity
from
contact
F to contact
G in both switch
positions.
\
Second
Technician
(Operators
Station)
l Set MASTER
BATTERY
switch
OFF.
l Set multimeter
to OHMS
X 1 scale and zero
meter, or
use STE/ICE
Test
No. 91 (page
4-83).
l Connect
red probe of meter
to contact
G (CKT
16) of
foot DIMMER
SWITCH.
l Connect black probe of meter to contact F (CKT 17) of
foot DIMMER
SWITCH.
l Check if meter indicates
continuity.
l Press and release foot DIMMER
SWITCH.
l Check if meter indicates
continuity.
1
Does meter indicate
continuity
in one switch position
only?
I
5
I
I
CONTAC
(CKT
TF
17)
Replace
foot DIMMER
SWITCH
(page
10-169).
.
*
TA107342
4-653