KNOWN INFO
7.
TEST OPTIONS
CAUTION
Read CAUTION
on following page.
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
POSSIBLE PROBLEMS
e65. TRAILER BLACKOUT MARKER LIGHTS DO NOT ILLUMINATE (CONT)
Replace intervehicular
24 VDC cable (para 7-79).
TM 9-2320-365-20-1
2-788 Change 1
Towing vehicle blackout
marker lights OK.
Circuit breaker CB42 OK.
Trailer electrical system OK.
Dashboard cable assembly OK.
Relay K29 OK.
Faulty rear lights cable
assembly.
Faulty rear intervehicular
24 VDC (12 pin) cable.
Is continuity present from
connector P51 socket 10
to connector P53R
sockets 7 and 9 and pin 10?
If continuity is not present,
wire 484T is faulty. If
continuity is present,
intervehicular 24 VDC (12 pin)
cable is faulty.
YES
Repair wire 484T from connector P51
socket 10 to connector P53R socket 7
or 9 or pin 10 (para 2-40) or replace
rear lights cable assembly (para 7-75).
NO
