e62. TRAILER MARKER/TAILLIGHTS DO NOT ILLUMINATE (CONT)
TM 9-2320-365-20-1
2-752 Change 1
CAUTION
Read CAUTION
on following page.
2.
Is continuity present from
connector J130 socket E
to relay K28 terminal 87?
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
This question eliminates
possible problems and
determines where
troubleshooting continues.
KNOWN INFO
Towing vehicle marker/taillights
OK.
Circuit breaker CB41 OK.
Trailer electrical system OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
Faulty relay K28.
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.
Is 24 VDC present at
relay K28 terminal 30
on PDP?
TEST OPTIONS
Voltage Test or
STE/ICE-R Test #89
REASON FOR QUESTION
If 24 VDC is not present, wire
1957 is faulty.
KNOWN INFO
Towing vehicle marker/taillights
OK.
Circuit breaker CB41 OK.
Trailer electrical system OK.
Rear lights cable assembly OK.
Rear intervehicular 24 VDC
(12 pin) cable OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
Faulty relay K28.
NO
Repair wire 1957 from K28 terminal 30 on PDP
to circuit breaker CB41 terminal 2 (para 2-40)
or replace WTEC II dashboard cable
assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
YES
