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 283 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-11.
TROUBLESHOOTING PROCEDURES (Continued).
MALFUNCTION
INSTRUCTION
INDICATION
YES
NO
51.
BOTH TAILLAMPS NOT WORKING (Continued).
3.
Check for voltage at
12-volts dc
Go to step 4.
Replace black-
circuit 30R-BR terminal
nominal.
out toggle
of blackout toggle
switch (para
switch.
3-79).
4.
Disconnect 30G-GR from
30H-BR, and go to step
5.
5.
Check for voltage at
12-volts dc
Connect circuit
Repair circuit
circuit 30G-BR terminal
nominal.
30G-BR to
30G-BR and/or
of connector.
30H-BR, and go
30R-BR (para
to step 6.
3-127).
6.
Check for voltage at
12-volts dc
Clean socket
Go to step 7.
circuit 30L-BR terminal
nominal.
and replace
of right taillamp.
bulb (para
3-96), and go
to step 7.
7.
Check for voltage at
12-volts dc
Clean socket
Repair circuit
circuit 30M-BR terminal
nominal.
and replace
30H-BR and/or
of left taillamp.
bulb (para
30K-BR (para
3-96).
3-127).
2-158
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