TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 199 of 1207
TM 9-2320-361-20
Table 2-4. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 6. Test for voltage at rear composite light.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Disconnect lead 22/461 at left-rear composite light.
Turn main light switch to SERVICE DRIVE position.
Place turn signal switch to LEFT position.
Set multimeter to a voltage range that will measure 24 Vdc.
Touch multimeter negative lead to frame ground.
Touch multimeter positive lead to contact end of lead 22/461. Voltage should fluctuate at a
rate of 1 or 2 cycles per second.
a. If voltage does fluctuate, go to test 7.
b. If voltage does not fluctuate, go to test 8.
Test 7. Test continuity of filament and socket for turn signal lamp.
Check continuity between lead 22/460/461 attached to rear composite light and frame
ground.
a. If continuity is present, reconnect leads 22/460/461 and check turn signal operation.
b. If continuity is not present, replace turn signal lamp (para. 4-19).
Test 8. Test continuity of lead 22/461 from turn signal switch to rear harness connector.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Set multimeter to RX1 scale.
Disconnect cable connector at turn signal switch.
Disconnect lead 22/461 from rear composite light.
Touch multimeter negative lead to contact end of 22/461.
Touch multimeter positive lead to contact end of lead 22/461 at turn signal cable
connector (pin C).
a. Continuity should be present.
b. If continuity is not present, replace or repair lead 22/461 (para. 4-51).
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