Test Point 4 - Oil temperature sensor

TEST POINT 4: - Oil Temperature Sensor (in cylinder head) - Fault code 1_17

Possible Causes, Elimination, Remarks

Using System Tester 9288, the oil temperature may be read directly in the Actual values menu item. As an alternative, connect an ohmmeter between terminal 47 and terminal 30 of the disconnected Digital Motor Electronics (DME) control unit plug.

Display at:
60°C = 3.8k Ohms
85°C = 1.5k Ohms
100°C = 930 Ohms

It the above values are not reached, check directly at oil temperature sensor.

NOTE: The engine temperature sensor informs the control unit of the actual oil temperature. Changes of the oil temperature cause the VarioCam shift points to be relocated.