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Page Title:
HIGH WATER TEMP INDICATOR LIGHT DOES NOT OPERATE - continued |
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 TM 10-3930-673-20-1
22. HIGH WATER TEMP INDICATOR LIGHT DOES NOT OPERATE (CONT).
2
KNOWN INFO
TEST OPTIONS
High water temp.
Continuity check.
Is continuity present across
Other gage lights work.
STE/ICE-R #91.
high water temp indicator
POSSIBLE PROBLEMS
REASON FOR QUESTION
lens/bulb?
Bulb faulty.
If continuity is not present, replace
Engine water temperature switch
bulb.
faulty.
Wire 14 faulty.
Wire 2 faulty.
Replace faulty bulb
NO
(Para 8-9).
YES
3
KNOWN INFO
TEST OPTIONS
High water temp.
Continuity check.
Is continuity present between
Other gages work.
STE/ICE-R #91.
high water temp indicator
12 vdc present at socket.
REASON FOR QUESTION
light socket outside
Bulb OK.
This question determines where
conductor and known good
POSSIBLE PROBLEMS
troubleshooting continues.
ground while parking brake
Engine water temperature switch
switch is on?
faulty.
Wire 14 faulty.
Wire 2 faulty.
Go to Step 4 of this
NO
fault.
YES
Go to Step 1 of this
fault.
2-388
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