| |
TM 10-3930-638-24&P
2-24. LIGHT SYSTEMS TROUBLESHOOTING (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. BLACK OUT STOP LIGHTS INOPERATIVE (cont)
Step 2. (cont)
b. If ohmmeter indicates less than 0.1 ohm for both tests, check for open circuit in wire between
terminal N of cable connector and black out stop lights.
6. SERVICE STOP LIGHTS INOPERATIVE
NOTE
If one stop light operates normally, replace bulb in affected stop light
(para 2-30d). If stop light is still inoperative, check for open circuit in wire
between inoperative stop light and operating stop light.
Step 1.
Unscrew and remove cable connector from bottom of VEHICLE
LIGHTS switch.
Place main switch lever on VEHICLE LIGHTS switch in STOP
LIGHT or SER. DRIVE position.
Connect ohmmeter leads to pins A and F of VEHICLE LIGHTS
switch and check for less than 0.1 ohm, then connect ohmmeter
leads to pins K and C and check for less than 0.1 ohm.
a. If ohmmeter indicates more than 0.1 ohm for either test,
replace VEHICLE LIGHTS switch (para 2-28b).
b. If ohmmeter indicates less than 0.1 ohm for both tests, check
for open circuit in wire between terminal C of cable
connect or and service stop lights. If continuity test of wire
is satisfactory, proceed to step 2.
Step 2. Disconnect wires from stop light switch and connect
ohmmeter leads to terminals of stop light switch.
Note ohmmeter indication while an assistant depresses
brake pedal.
a. If ohmmeter does not indicate less than 0.2 ohm,
replace stop light switch (para 2-3le(2)).
b. If ohmmeter indicates less than 0.2 ohm with
brake pedal depressed, check for open circuit in
wiring between stop light switch and terminals A
and K of cable connector.
7. REAR FLOOD LIGHTS INOPERATIVE
NOTE
If one rear flood light operates normally, replace bulb in affected flood light
(para 2-30a). If flood light is still inoperative, check for open circuit in wire
between inoperative flood light and REAR FLOOD switch.
2-110
|
