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 158 of 1184

TM 9-2330-334-13&P

LEFT BLACKOUT STOPLIGHT DOES NOT ILLUMINATE-Continued

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THIS WORK PACKAGE COVERS:

Electrical System Troubleshooting

Table 1. Left Blackout Stoplight Does Not Illuminate.

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INDICATION/CONDITION

DECISION (NO/YES)

PROCEDURAL STEPS

1.

Is 18-30 VDC present at

connector J257?

No.

Repair wire 116 (EM 0195)

or replace left rear electrical

harness (WP 0064 00).

1.

Set multimeter to VDC.

Yes.

Replace left rear composite

taillight (WP 0060 00).

2.

Remove left rear composite

light from trailer for access

(WP 0060 00).

3.

Disconnect connector J257

from left rear composite

taillight.

4.

Connect positive (+) probe

of multimeter to connector

J257.

5.

Connect negative (-) probe

of multimeter to a known

good ground.

6.

Position main light switch to

B.O. DRIVE on towing

vehicle, depress brake pedal,

and note reading on

multimeter.

END OF WORK PACKAGE