KNOWN INFO
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
Faulty dashboard cable
assembly.
Faulty main light switch.
Faulty diode D1A.
Faulty relay K10.
POSSIBLE PROBLEMS
Blackout stoplights illuminate.
Lamp OK.
Rear lights cable assembly
OK.
Composite taillight assembly
OK.
Turn signal switch OK.
Diode D1B OK.
Diode D2A OK.
KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
Voltage Test or
STE/ICE-R Test #89
11.
10.
YES
NO
NO
WARNING
Read WARNING
on following page.
POSSIBLE PROBLEMS
Blackout stoplights illuminate.
Lamp OK.
Rear lights cable assembly
OK.
Composite taillight assembly
OK.
Turn signal switch OK.
Diode D1B OK.
Diode D2A OK.
Main light switch OK.
Faulty dashboard cable
assembly.
Faulty diode D1A.
Faulty relay K10.
Replace main light
switch (para 7-17).
Is 12 VDC present at
diode D1A terminal 2?
If 12 VDC is not present,
wire 22 is faulty.
YES
e59. ONE OR BOTH STOPLIGHTS DO NOT ILLUMINATE (CONT)
TM 9-2320-365-20-1
2-720 Change 1
If continuity is not present,
main light switch is faulty.
REASON FOR QUESTION
Is continuity present from
main light switch pin K
to pin C?
Repair wire 22 from diode D1A
terminal 2 to connector PX15 socket C
(para 2-40) or replace WTEC II dashboard
cable assembly (para 7-10) or
WTEC III dashboard cable
assembly (para 7-11).
