e63. TRAILER RIGHT STOP/TURN LIGHT DOES NOT ILLUMINATE (CONT)
TM 9-2320-365-20-1
2-762 Change 1
CAUTION
Read CAUTION
on following page.
2.
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
KNOWN INFO
Towing vehicle right stop/turn
light OK.
Circuit breaker CB44 OK.
Trailer electrical system OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
Faulty relay K31.
Faulty rear lights cable
assembly.
Faulty rear intervehicular
24 VDC (12 pin) cable.
NO
Go to step 6 of this fault.
YES
WARNING
Read WARNING
on following page.
3.
TEST OPTIONS
Voltage Test or
STE/ICE-R Test #89
REASON FOR QUESTION
KNOWN INFO
POSSIBLE PROBLEMS
NO
Repair wire 1956 from K31 terminal 30
on PDP to circuit breaker CB44 terminal 6
(para 2-40) or replace WTEC II dashboard
cable assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
YES
If 24 VDC is not present,
wire 1956 is faulty.
This question eliminates
possible problems and
determines where
troubleshooting continues.
Is 24 VDC present at relay
K31 terminal 30 on PDP?
Is continuity present from
connector J130 socket J to
relay K31 terminal 87?
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.
Faulty dashboard cable
assembly.
Faulty relay K31.
