TM-9-2320-365-20-1

M1078 SERIES, 2 1/2-TON, 4 X 4, LIGHT MEDIUM TACTICAL VEHICLES (LMTV)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; UNIT MAINTENANCE; VOLUME NO. 1 OF 5

FEBRUARY 2006

CHANGE 3

TM-9-2320-365-20-1 - Page 1154 of 1760

e62. TRAILER MARKER/TAILLIGHTS DO NOT ILLUMINATE (CONT)

TM 9-2320-365-20-1

2-758

Change 1

CAUTION

Read CAUTION

on following page.

7.

Is continuity present from

connector P51 socket 9

to connector P53R

pin 2?

TEST OPTIONS

Continuity Test or

STE/ICE-R Test #91

REASON FOR QUESTION

If continuity is not present,

wire 489T is faulty.

If

continuity is present,

intervehicular 24 VDC (12 pin)

cable is faulty.

KNOWN INFO

Towing vehicle marker/taillights

OK.

Circuit breaker CB41 OK.

Trailer electrical system OK.

Dashboard cable assembly OK.

Relay K28 OK.

POSSIBLE PROBLEMS

Faulty rear lights cable

assembly.

Faulty rear intervehicular

24 VDC (12 pin) cable.

NO

Repair wire 489T from connector

P51 socket 9 to connector P53R

pin 2 (para 2-40) or replace rear

lights cable assembly (para 7-75).

YES

Replace intervehicular

24 VDC cable (para 7-79).