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 390 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-11.

TROUBLESHOOTING PROCEDURES (Continued).

MALFUNCTION

INSTRUCTION

INDICATION

YES

NO

81.

24-VOLT TRAILER BLACKOUT TAILLAMPS NOT WORKING (Continued).

22

Disconnect 24-volt cab

connector, and go to

step 23.

23

Check for voltage at 24-volts dc

Recheck trailer

Repair circuit

circuit 23N-BR (pin H

nominal

taillamp cir-

23J-BR (para

of connector)

cuit

3-127).

24

Disconnect 24-volt

chassis connector, and

go to step 25.

25

Check for voltage at 24-volts dc

Recheck trailer

Repair circuit

circuit 23U-BR (pin Anominal

taillamp cir-

23P-BR and/or

of connector)

cuit

23J-BR (para

2-264