TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 282 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-11.
TROUBLESHOOTING PROCEDURES (Continued).
MALFUNCTION
INSTRUCTION
INDICATION
YES
NO
51.
BOTH TAILLAMPS NOT WORKING.
NOTE
Blackout toggle switch must be set to NORMAL position and headlamp switch in
ON position when doing the following checks.
1.
Check for voltage at
12-volts dc
Go to step 2.
Refer to mal-
circuit 30-OR terminal
nominal.
function 44.
of headlamp switch.
2.
Check for voltage at
12-volts dc
Go to step 3.
Repair circuit
circuit 30-OR terminal
nominal.
30-OR (para
of blackout toggle
3-127).
TA 236887
2-157
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