TM-9-2320-366-20-2
M1083 SERIES, 5 TON, 6x6, MEDIUM TACTICAL VEHICLES (MTV)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; UNIT MAINTENANCE; VOLUME NO. 2 OF 5
FEBRUARY 2006
CHANGE 3
TM-9-2320-366-20-2 - Page 742 of 1632
TM 9-2320-366-20-2
KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
KNOWN INFO
POSSIBLE PROBLEMS
Voltage Test or
STE/ICE-R Test #89
WARNING
Read WARNING
on following page.
WARNING
Read WARNING
on following page.
2-1550
Change 1
7.
8.
POSSIBLE PROBLEMS
Circuit breakers CB71, CB72,
and CB74 OK.
Hazard lights illuminate.
Light bulb OK.
Auxiliary panel cable
assembly OK.
Worklights switch OK.
Relay K12 OK.
Is 12 VDC present at diode
D2B terminal 4?
Go to step 8 of this fault.
Go to step 12 of this fault.
YES
NO
TEST OPTIONS
Voltage Test or
STE/ICE-R Test #89
REASON FOR QUESTION
This question eliminates
possible problems and
determines where
troubleshooting continues.
Faulty dashboard cable
assembly.
Faulty diode D2B.
Faulty relay K9.
Circuit breakers CB71, CB72,
and CB74 OK.
Hazard lights illuminate.
Light bulb OK.
Auxiliary panel cable
assembly OK.
Diode D2B OK.
Worklights switch OK.
Relay K12 OK.
If 12 VDC is not present, wire
1514 is faulty.
Is 12 VDC present at
relay K9 terminal 86?
Faulty dashboard cable
assembly.
Faulty relay K9.
NO
Repair wire 1514 from relay K9
terminal 86 on PDP to circuit breaker
CB74 terminal 6 (para 2-45) or replace
WTEC II dashboard cable assembly
(para 7-10) or WTEC III dashboard cable
assembly (para 7-11).
YES
e148. M1088/M1089 WORKLIGHTS DO NOT ILLUMINATE (CONT)
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