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 280 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-11.

TROUBLESHOOTING PROCEDURES (Continued).

MALFUNCTION

INSTRUCTION

INDICATION

YES

NO

49.

ALL CAB CLEARANCE AND MARKER LAMPS NOT WORKING (Continued).

7.

Disconnect circuit

31-BR from 31A-BR at

connector, and go to

step 8.

8.

Check for voltage at

12-volts dc

Connect cir-

Repair circuit

circuit 31-BR terminal

nominal.

cult 31-BR

31-BR (para

of connector.

and 31A-BR,

3-127). Install

and go to step

headliner

9.

(para 3-275).

9.

Check for voltage at

12-volts dc

Cab clear-

Repair circuit

circuit 31A-BR terminal

nominal.

ance and

31A-BR (para

of lamp.

marker lamp

3-127). Install

circuit OK.

headliner

Go to malfunc-

(para 3-275).

tion 48.

TA 236886

2-155