TM-9-2320-361-24-1
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2
AUGUST 2006
TM-9-2320-361-24-1 - Page 218 of 1176
TM 9-2320-361-24-1
0013 00
0013 00-6
LIGHTING AND WIPER SYSTEM TROUBLESHOOTING (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. TAILLIGHT OR
CLEARANCE LAMP
DOES NOT LIGHT
Test 1. Test battery voltage at rear
composite light.
1. Place main light switch lever
in OFF position.
2. Disconnect lead 21 from rear
composite light
3. Turn main light switch lever to
SERVICE DRIVE position.
4. Check for battery voltage on
contact end of lead 21.
Test 2. Test continuity of filament in
taillight lamp.
Set multimeter to RX 1 scale. Check
for continuity between lead 21
connected to rear composite light and
frame ground.
1. If battery voltage is present, go to
test 2 and check lamp filaments
(WP 0125 00).
2. If voltage is not present, go to WP
0013 00, table 1, malfunction 1,
test 3, and check front wiring harness
pin H.
1. If continuity is not present, replace
taillight lamp (WP 0125 00).
2. If continuity is present, check for
corroded contacts at lamp and lead
21 connection to rear wiring
harness. Reconnect lead 21.
4. STOPLIGHT LAMP
DOES NOT LIGHT
Test 1. Test battery voltage at rear
composite light.
1. Turn main light switch to OFF
position.
2. Disconnect lead 22-460-461
from rear composite light on
side of vehicle where stoplight
has failed.
NOTE
Ensure turn indicator is in neutral
position.
3. Check for battery voltage on
contact end of lead 22-460-461.
Test 2. Test continuity of filament in
stoplight lamp.
Check continuity between frame
grounds and lead 22-460-461
connected to rear composite light.
1. Depress brake pedal to activate
stoplight switch.
2. If voltage is present, go to step 2.
3. If battery voltage is not present, go
to WP 0013 00, table 1, malfunction
1, test 3, and test lighting system
harness connector pin C.
If continuity is present, check for
corroded contact at lamp and lead
22-460-461 connection to rear wiring
harness. Reconnect lead 22-460-461.
Table 1. Lighting System Troubleshooting Procedures (Contd).
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