Test Point 10 - NTC II (Engine Temperature)
TEST POINT 10 - DME 944NTC II (Engine Temperature)
Connect ohmmeter on control unit plug term. 13 and ground.
Sensor Test Values at: 0 °C = 4.4 - 6.8 kohm
15 - 30 °C = 1.4 - 3.6 kohm
40 °C = 1-1.3 kohm
80 °C = 250 - 390 ohm
100 °C = 160 - 210 ohm
If values are not reached, check direct on temperature sensor.
Note: Temp. sensor with break = richer mixture
Temp. sensor with short circuit = leaner mixture
Control Unit Function Test
Engine at operating temperature and running at idle speed.
Engine must stop (excessively rich mixture) after pulling off the temperature sensor plug.