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Operation 4‐29MN2408
Engine Temperature & Oil Pressure Calibration
To accurately calibrate the controller's temperature sensor, an external temporary engine mounted
temperature gauge is required. The external temperature gauge should be connected as close as possible
to the temperature sender.
To accurately calibrate the controller's pressure sensor, an external temporary engine mounted pressure
gauge is required. The external pressure gauge should be connected as close as possible to the pressure
sender.
ENGINE TEMP
127 955C
Displays the type of calibration function.
Displays the calibration correction factor number (0-255) used to obtain the correct Temperature or Pressure reading.
Displays the actual temperature or pressure measurement shown on the display menus.
This reading may be calibrated higher or lower by changing the correction factor number.
Engine Temperature The engine temperature analog circuit must be calibrated with the engine temperature sender mounted on the engine.
Connect a temporary engine mounted temperature gauge of suitable accuracy and start the engine. After the engine
reaches normal operating temperature, enter the programming mode and scroll to the “Engine Temperature Offset”
calibration point. Use the INCREMENT or DECREMENT push-buttons to adjust the correction factor number while
observing the displayed temperature. Adjust the correction factor number to obtain the identical temperature reading as
measured with the external temperature gauge. With the correct temperature displayed, press the “Enter” push-button to
accept the correction factor number. Record the correction factor on the programming sheet for future reference.
Oil Pressure Connect a temporary engine mounted pressure gauge of suitable accuracy and start the engine. After the engine
reaches normal operating pressure and temperature, enter the programming mode and scroll to the “Engine Pressure
Offset” calibration point. Use the INCREMENT or DECREMENT push-buttons to adjust the correction factor number
while observing the displayed pressure. Adjust the correction factor number to obtain the identical pressure reading as
measured with the external pressure gauge. With the correct pressure displayed, press the “Enter“ push-button to
accept the correction factor. Record the correction factor on the programming sheet for future reference.
Engine
Temperature
Sender
Resistance
Oil
Pressure
Sender
Resistance
5F 5C Ohms KPA PSI Ohms
392 200 20 1034 150 38
374 190 24 965 140 42
356 180 28 896 130 48
338 170 33 827 120 54
320 160 39 758 110 62
302 150 46 689 100 70
284 140 55 621 90 79
266 130 65 552 80 89
248 120 76 483 70 101
230 110 90 414 60 114
212 100 106 345 50 127
194 90 147 276 40 142
176 80 197 207 30 160
150 70 290 138 20 183
140 60 426 69 10 206
122 50 622
104 40 952
86 30 1486
68 20 2322
50 10 3644
32 0 6284
Note: Sender resistance data shown are for Oil Pressure Sender p/n-003654 (Thompson p/n), Manufacturer- Datcon, p/n
102227. Datcon Sender must be used with MEC software version 1.81 or greater (previous software versions cannot be
used).