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 224 of 1176
TM 9-2320-361-24-1
0013 00
0013 00-12
LIGHTING AND WIPER SYSTEM TROUBLESHOOTING (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. DIRECTIONAL
SIGNAL
INOPERATIVE
NOTE
Testing procedures for left and right
turn signal leads 461 and 460 are
performed the same, using tests 2
through 8. This test covers left side
461 turn signal circuit.
Test 1. Test turn signal lamps.
1. Turn main switch to SERVICE
DRIVE.
2. Place turn signal in left or
right position. Turn signal
should flash on each side.
1. If turn signal on left or right
operates properly, go to test 2.
2. If turn signal on left or right
illuminates but does not flash, go
to test 3.
R.H. FRONT COMPOSITE LIGHT
TURN
L.H. FRONT COMPOSITE LIGHT
TURN
R.H. REAR COMPOSITE LIGHT
L.H. REAR COMPOSITE LIGHT
15 (+24 VDC)
21 TAILLIGHTS
16 HEADLIGHTS
22-460
22-461
461
460
467A
467B
460-461
LIGHT
SWITCH
SERVICE
DRIVE
STOP
LIGHT
OFF
LEFT
NEUTRAL
RIGHT
HAZARD
TURN
INDICATOR
LAMP
75 STOPLIGHT (OPEN)
75 STOPLIGHT
460 R.H. TURN
461 L.H. TURN
D
E
C
B
A
H
F
G
F
H
M
J
A
K
C
STOP
G
C
FLASHER
90—
STOP/
TURN
STOP/
TURN
22
HARNESS
CONNECTOR
Table 3. Directional Signal Systems Troubleshooting Procedures.
TURN
SIGNAL
SWITCH
491
460-461
20-483-484
X
X
~
X
~
~
~
~
~
491
460-461
20-483-484
X
X
~
X
~
X
X
~
~
~
21
22-460- 461
24
23
21
22-460-461
24
23
X
X
~
X
~
X
X
A
B
C
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