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 465 of 1500

TM 9-2320-273-20

Table 5-9. Marker Lamps Circuit Troubleshooting.

INSTRUCTION

INDICATION

I

YES

I

NO

I

REMARKS

1

2

3

4

Tighten.

Repair.

FRONT MARKER LAMPS INOPERATIVE.

If none of the front

Loose connection.

Tighten.

marker lamps operates Broken wire.

Repair.

check wiring from the

switch.

INTERMEDIATE MARKER LAMPS INOPERATIVE.

If neither of the side

Loose connection.

Tighten.

marker lamps operate,

Broken wire.

Repair.

check wiring from the

switch.

REAR MARKER LAMPS INOPERATIVE.

If none of the rear

Loose Connection.

marker lamps oper-

Broken wire.

ates, check wiring

from the switch.

ALL MARKER LAMPS INOPERATIVE.

Check for voltage at

12 volts dc nominal.

Trouble-

both switch terminals

shoot wiring.

using multi meter.

Replace any

single lamp

that is inop-

erative.

Replace

bulb.

Replace

bulb.

Replace

switch.

5-49