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 326 of 926

TM 9-2320-283-20-1

2-11.

TROUBLESHOOTING PROCEDURES (Continued).

MALFUNCTION

INSTRUCTION

INDICATION

YES

NO

66.

ONE BLACKOUT TAILLAMP NOT WORKING.

NOTE

•-Headlamp switch must be in ON position and blackout

toggle switch in BLACKOUT position

when

doing

the

following checks.

•-Faulty right

blackout

taillamp

is shown in this

procedure.

Apply similar troubleshooting technique for

left blackout taillamp.

1.

Disconnect circuit

23W-TN from right

blackout taillamp,

and go to step 2.

2.

Check for voltage at

12-volts dc

Go to step 3.

Repair circuit

circuit 23W-TN terminal

nominal.

23W-TN (para

of connector.

3-127).3

2-201