TM-9-2320-366-20-1
M1083 SERIES, 5 TON, 6x6, MEDIUM TACTICAL VEHICLES (MTV)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; UNIT MAINTENANCE; VOLUME NO. 1 OF 5
FEBRUARY 2006
CHANGE 3
TM-9-2320-366-20-1 - Page 834 of 1824
TM 9-2320-366-20-1
2-540
e42.
ONE OR BOTH HEADLIGHT LOW BEAMS DO NOT ILLUMINATE
INITIAL SETUP
Equipment Condition
Engine shut down (TM 9-2320-366-10-1).
Personnel Required
(2)
Tools and Special Tools
Tool Kit, Genl Mech (Item 46, Appendix C)
STE/ICE-R (Item 41, Appendix C)
Multimeter, Digital (Item 22, Appendix C)
References
TM 9-4910-571-12&P
START
1.
Does one headlight low
beam illuminate?
Go to step 3 of this fault.
KNOWN INFO
Headlight high beams
illuminate.
POSSIBLE PROBLEMS
Faulty headlight lamp.
Faulty front lights cable
assembly.
Faulty dashboard cable
assembly.
Faulty relay K8.
Faulty turn signal switch.
TEST OPTIONS
Operational Test
REASON FOR QUESTION
YES
This question eliminates
possible problems and
determines where
troubleshooting continues.
KNOWN INFO
Headlight high beams
illuminate.
One headlight low beam
operational.
Dashboard cable assembly OK.
Relay K8 OK.
Turn signal switch OK.
POSSIBLE PROBLEMS
Faulty headlight lamp.
Faulty headlamp wire 18.
2.
Is continuity present
between headlight lamp
wire 18 and headlight lamp
wire 91?
YES
Replace headlight lamp (para 7-41).
NO
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
If continuity is not present,
headlight lamp is faulty.
If
continuity is present, wire 18
is faulty.
Repair wire 18 (para 2-45) or replace front
lights cable assembly (para 7-82).
NO
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