TM
5-5420-226-20-1
Symptom-69
DETAILED
TROUBLESHOOTING
PROCEDURE
(
T
SUPPORT
SYSTEM
- VEHICLE
LIGHTING
(Continued)
#check
foot
DIMMER
SWITCH
for COtIthtUity
frOM
contact
A to contact
C in both switch
positions.
First
l
l
l
l
l
l
l
Technician
(Operator’s
Station)
Set MASTER
BATTERY
switch
OFF.
Remove
foot DIMMER
SWITCH
(page
10-169).
Set multimeter
to OHMS
Xl scale and “zero”
meter or
use STE/ICE
Test
No. 91 (page 4-83).
Connect
red probe of meter to contact
C(CKT
514-5
15)
and black
probe
to contact
A (CKT
515) of foot
DIMMER
SWITCH
connector.
Check
if meter
indicates
continuity.
Press
and release
foot DIMMER
SWITCH.
Check
if meter
indicates
continuity.
.
0
-m
r
r
(i”
FOOT DIMMER
SWITCH
Does meter
indicate
continuity
in one DIMMER
SWITCH
position?
v
CONt’ACT
A
Replace
foot DIMMER
SWITCH
(page
10-169).
TA107352
4-663
