TRAILER BLACKOUT STOPLIGHTS DO NOT ILLUMINATE (CONT)

TM 9-2320-366-20-1

e69. TRAILER BLACKOUT STOPLIGHTS DO NOT ILLUMINATE (CONT)

CAUTION

Read CAUTION

KNOWN INFO

TEST OPTIONS

on following page.

Continuity Test or

Towing vehicle blackout

STE/ICE-R Test #91

stoplights OK.

Is continuity present from

REASON FOR QUESTION

Circuit breaker CB39 OK.

connector P51 socket 8

Trailer electrical system OK.

If continuity is not present,

to connector P53R

Dashboard cable assembly OK.

wire 23T is faulty. If

socket 6?

Relay K27 OK.

continuity is present,

intervehicular 24 VDC (12 pin)

POSSIBLE PROBLEMS

cable is faulty.

Faulty rear lights cable

assembly.

Faulty rear intervehicular

24 VDC (12 pin) cable.

Repair wire 23T from connector P51 socket 8

to connector P53R socket 6 (para 2-45) or replace

M1083/M1084/M1085/M1090/M1090/M1092/

YES

M1093/M1094 rear lights cable assembly

(para 7-84) or M1086/M1088/M1089 rear lights

cable assembly (para 7-104).

Replace intervehicular

24 VDC cable (para 7-129).

2-834

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