TM-9-2330-334-13-P

FAMILY OF MEDIUM TACTICAL VEHICLES (FMTV) LOAD HANDLING SYSTEM TRAILER (LHST) M1147A1

TECHNICAL MANUAL; OPERATOR AND FIELD LEVEL MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL)

DECEMBER 2013

CHANGE 1

TM-9-2330-334-13-P - Page 162 of 1184

TM 9-2330-334-13&P

BOTH BLACKOUT STOPLIGHTS DO NOT ILLUMINATE-Continued

0029 00

ELECTRICAL SYSTEM TROUBLESHOOTING - Continued

Table 1.

Both Blackout Stoplights Do Not Illuminate - Continued.

Change 1

0029 00-4

INDICATION/CONDITION

DECISION (NO/YES)

PROCEDURAL STEPS

3.

Is 18-30 VDC present at

TL257?

No.

Repair wire or replace

voltage converter box (WP

0058 00).

1.

Set multimeter to VDC.

Yes.

Repair wire 104 (EM 0195)

or replace main electrical

harness (WP 0066 00).

2.

Connect intervehicular cable

connector to voltage

converter box.

3.

Position main light switch to

B.O. DRIVE on towing

vehicle and depress brake

pedal.

4.

Connect positive (+) probe

of multimeter to TL257.

5.

Connect negative (-) probe

of multimeter to a known

good ground and note

reading on multimeter.

END OF WORK PACKAGE