that takes much longer to heat up than the cylinders themselves. A third option would be to use a
manifold
air temperature
sensor in a sheet metal “stove” on one of the cylinders.
Resistance Curve for MAT & CLT Sensors
10
100
1000
10000
100000
-40
-20
0
20
40
60
80
100
120
140
Temperature,
o
C
Resist
an
ce, O
h
m
s
Resistance Curve for MAT & CLT Sensors
10
100
1000
10000
100000
-40
0
40
80
120
160
200
240
280
Temperature,
o
F
Resi
stance,
O
h
ms
Fig G.3.1:
Sensor resistance vs. temperature for CLT and MAT sensor.
Fig. G.3.2:
Coolant temperature sensor wiring.
Wiring the Coolant temperature sensor is straightforward. See
Figure G.3.2
for details. Since the
sensor is just a resistor, wires “A” and “B” can be switched with no adverse results.
To test for faulty coolant temperature sensors, simply measure the resistance across terminals A and
B with an ohmmeter. Match the resistance of the sensor to the operating temperature using
Table G.3.1
.
As a guideline, use the following specs:
Cold engine (70F, 20C):
~3300
Ω
Hot Engine (180F, 80C):
~350
Ω
______________________________________________________________________________________
TECgt Manual Version 2.0
- Page 90 -
©2008 Electromotive, Inc.
