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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).
4
KNOWN INFO
TEST OPTIONS
High water temp.
Continuity check.
Is continuity present across
Other gage lights work.
REASON FOR QUESTION
engine water temp switch
12 vdc present at socket.
If continuity is not present, parking
while switch sensor
Bulb OK.
brake switch is faulty.
temperature is 225F (161C)
POSSIBLE PROBLEMS
or higher?
Parking brake switch faulty.
Wire 14 faulty.
Wire 2 faulty.
Replace engine
NO
water temp switch
(Para 8-15).
YES
5
KNOWN INFO
TEST OPTIONS
High water temp.
Continuity check.
Is continuity present across
Other gages work.
STE/ICE-R #91.
wire 14?
12 vdc present at socket.
REASON FOR QUESTION
Bulb OK.
If continuity is not present across
Engine water temp switch OK.
wire, wire is faulty.
POSSIBLE PROBLEMS
Wire 14 faulty.
Replace or repair
NO
wire 14 (Para 8-48).
YES
2-390
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