TM-9-2320-209-20-2-1

2½-TON, 6X6, M44A1 AND M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; TROUBLESHOOTING; ORGANIZATIONAL LEVEL; VOLUME 2 OF 3; PART 1 OF 2

MAY 1981

TM-9-2320-209-20-2-1 - Page 316 of 645

TM 9-2320-209-20-2-1

GO

—

h

NOTE

You now know that high beam and Iow beam

voltage is reaching both lead lamp assemblies.

This means the trouble is in both head lamp

assemblies

n

9

I

●

Go to step 17

I

I

I

●

Check wiring harness between dimmer

switch and headlights

●

●

●

●

●

Take off leads 17 and 18 contacts

from dimmer switch. Refer to Vol 3,

chapter 7, para 7-65

Put multimeter + lead on lead 18

contact of dimmer switch. Put

multimeter - lead on a good ground

Read multimeter. Multimeter

should read +24 volts DC. If not,

press down on dimmer switch and

read multimeter again

Put multimeter + lead on lead 17

contact

Press down on dimmer switch and

read multimeter again

Does mu I timeter measure less than +24 VOI ts

DC at either or both leads 17 and 18

contacts?

b

r

LE/iD 18

CONTACT

/3

GO

TA 114281

25-74

Figure 25-7 (Sheet 4 of 11)