Oil level sensor (2005-, certain markets only)
The oil level sensor provides the engine control module (ECM) with information about the quality and temperature of the engine oil and the oil level in the oil trough. Which of these functions is used by the sensor varies between different car models.
All three functions are combined in one unit with a sensor section and an electronics section.
There are no moving parts in the sensor.
The sensor consists of:
- a terminal with three pins
- integrated electronics
- 2 capacitive gauge elements
- a PTC resistor.
The oil level sensor is supplied with 5 V by the engine control module (ECM). The oil level sensor generates a PWM signal for the engine control module (ECM). See also: Oil monitoring (2005-, certain markets only)
The engine control module (ECM) has diagnostics for oil level sensor functions.
The pulse-width modulated (PWM) signal from the oil level sensor can be read using parameter readout.