TM-9-2320-273-20

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE

NOVEMBER 1980

TM-9-2320-273-20 - Page 474 of 1500

TM 9-2320-273-20

Table 5-13. Blackout Lighting System Circuit Troubleshooting (Continued).

3

3

4

INSTRUCTION

TRAILER BLACKOUT

Check for voltage at

relay contact terminal

then work back to

starter solenoid.

Check for voltage at

each wire contact

from relay to

OPERATION switch.

INDICATION

LAMPS INOPERATIVE

24V nominal available

at one test point; not

available at preceding

test point.

12V nominal available

at one test point; not

available at preceding

test point.

YES

(Continued)

Inspect

wiring be-

tween points

checked;

then replace

defective

wire(s).

Inspect

wiring be-

tween point

checked;

then replace

defective

wire(s).

NO

REMARKS

5-58