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TM 9-2320-364-20-2
2-1087
(1) Disconnect connector MC59
from EPAC.
(2) Set multimeter select switch to ohms.
(3) Start engine and run at idle speed
(TM 9-2320-364-10). It is normal for
fan to operate at high speed with
connector MC59 disconnected.
(4) Measure resistance at connector
MC59 between terminals A and B.
(a) If resistance is not within range at
specified temperature shown in
Table 2-36, turn OFF ENGINE
switch and replace STE-ICE
water temperature sensor
(Para 7-64).
(b) If resistance is within range at
specified temperature shown in
Table 2-36, temperature sensor is
OK.
(5) Turn OFF ENGINE switch.
(6) Connect connector MC59 to EPAC.
RESISTANCE TEST
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical
circuits, a direct short may result. Damage to equipment, injury or death to personnel may occur.
Use STE/ICE-R #91 to monitor coolant
temperature.
NOTE
Table 2-36. Water Temperature Sensor Resistance
TEMPERATURE vs RESISTANCE CALIBRATION
Temperature
Resistance
(ohms)
–40C (–40F)
–30C (–22F)
–20C (–4F)
–10C (14F)
0C (32F)
10C (50F)
20C (68F)
30C (86F)
40C (104F)
50C (122F)
Temperature
Resistance
(ohms)
684 30
728 30
774 30
821 30
870 30
921 30
973 30
1027 30
1083 30
1140 30
60C (140F)
70C (158F)
80C (176F)
90C (194F)
100C (212F)
110C (230F)
120C (248F)
130C (266F)
140C (284F)
150C (302F)
1199 30
1259 10
1322 5
1385 5
1451 5
1518 10
1587 30
1657 30
1729 30
1803 30
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