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 333 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-11.

TROUBLESHOOTING PROCEDURES (Continued).

MALFUNCTION

INSTRUCTION

INDICATION

YES

NO

72.

BOTH 12-VOLT TRAILER TAILLAMPS NOT WORKING.

NOTE

Headlamp switch must be in ON position and

blackout

toggle

switch

set

to NORMAL position when doing the

follow- ing checks.

1.

Disconnect 12-volts

trailer connector, and

go to step 2.

2.

Check for voltage at

12-volts dc

Recheck trailer

Repair circuit

circuit 30J-BR (pin 2

nominal.

taillamp cir-

30J-BR (para

of connector).

cuit.

3-127).

TA 236913

2-208