TM 5-3805-262-20
3-11. LIGHT SYSTEMS TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. BLACKOUT TAIL LIGHTS DO NOT OPERATE.
Step 1.
Place ignition key switch in on position.
Place vehicle lights switch in B.0. DRIVE position.
Blackout tail lights and blackout driving light should be on.
a. If one tail light is on, go to step 3 below.
b . I f b o t h t a i l l i g h t s a r e o f f, and blackout driving light is on,
go to step 2 below.
C . If all blackout lights are off, refer to page 3-81, MALFUNCTION
1.
Step 2.
Place vehicle lights and ignition key switches in off position.
Reach behind right instrument panel and unplug vehicle lights switch
connector by turning connector nut counterclockwise and pulling
f i r m l y .
Check wiring connection between wiring harness yellow wire terminals
at tail lights and vehicle lights switch connector pin E.
a. Repair or replace wire or connector as necessary (page 5-168 or
5-179).
b. If wiring and connectors are okay, remove right instrument panel
(page 5-48) and replace vehicle lights switch (page 5-53).
Step 3.
Disconnect wiring harness yellow wire terminal from tail light wire
terminal by grasping both terminals with your fingers and firmly
pulling them apart.
Connect multimeter between
frame.
Multimeter should indicate
a . I f m u l t i m e t e r i n d i c a t es
wiring harness terminal and chassis
2 4 v o l t s.
24 volts, connect terminals by grasping
both terminals with your fingers, alining, and firmly-pushing -
them together. Then replace lamp (page 5-109). If tail light
still does not operate
(page 5-109).
, replace blackout tail light assembly
b . I f m u l t i m e t e r i n d i c a t e s z e r o, check wiring connection at yellow
wire terminal. Repair or replace wiring or terminal as necessary
(page 5-179).
3-86
