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TM 9-2320-364-20-2
2-1086
1. ENGINE OVERHEATS (WATER TEMP GAGE CONTINUOUSLY READS OVER
230F (110C) (CONT)).
10.
Replace STE-ICE
water temperature
sensor (Para 7-64).
Verify repair, go to
Step 11 of this Fault.
YES
NO
Coolant hoses and clamps OK.
Radiator cooling fins OK.
Fan operates at low speed.
Fan operates at high speed.
Thermostat(s) OK.
Water temperature gage OK.
Cooling assembly OK.
Water temperature switch OK.
Water temperature sensor
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Resistance test.
STE/ICE-R #91.
As temperature increases,
resistance of water temperature
sensor increases, which
reduces voltage to the fan
controller. Fan controller will not
open/close control valve
accurately if STE-ICE water
temperature sensor is defective.
WARNING
Is resistance of STE-ICE
water temperature sensor
connector MC59, terminals A
and B, within good range in
Table 2-36?
Read WARNING
on Page 2-1087
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