TEST OPTIONS
REASON FOR QUESTION
KNOWN INFO
Voltage Test or
STE/ICE-R Test #89
POSSIBLE PROBLEMS
WARNING
Read WARNING
on following page.
4.
YES
e63. TRAILER RIGHT STOP/TURN LIGHT DOES NOT ILLUMINATE (CONT)
TM 9-2320-365-20-1
2-764 Change 1
Towing vehicle right stop/turn
light OK.
Circuit breaker CB44 OK.
Trailer electrical system OK.
Rear lights cable assembly OK.
Rear intervehicular 24 VDC
(12 pin) cable OK.
Is 12 VDC present at relay
K31 terminal 86 on PDP?
If 12 VDC is not present, wire
460B is faulty.
Faulty dashboard cable
assembly.
Faulty relay K31.
NO
Repair wire 460B from relay K31
terminal 86 on PDP to connector J19
socket 3 (para 2-40) or replace WTEC II
dashboard cable assembly (para 7-10)
or WTEC III dashboard cable assembly
(para 7-11).
YES
5.
Is continuity present from
relay K31 terminal 85 on
PDP to ground?
KNOWN INFO
Towing vehicle right stop/turn
light OK.
Circuit breaker CB44 OK.
Trailer electrical system OK.
Rear lights cable assembly OK.
Rear intervehicular 24 VDC
(12 pin) cable OK.
POSSIBLE PROBLEMS
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
If continuity is not present,
wire 3048 is faulty.
Faulty dashboard cable
assembly.
Faulty relay K31.
NO
Repair wire 3048 from K31
terminal 85 on PDP to terminal
board TB2 position 53 (para 2-40)
or replace WTEC II dashboard cable
assembly (para 7-10) or WTEC III
dashboard cable assembly
( para 7-11).
Replace relay K31
(para 7-9).
