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Home >> Volvo >> 2009 >> V70 >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Differential Electronic Module (DEM), Driver Information Module (Dim), Engine And Engine Control Module (ECM) - Design And Function >> Driver Information Module (Dim) (2008) >> Function >> Warning Lamp For Low Oil Pressure (Only Applies To Versions With Oil Pressure Sensor)
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Warning Lamp For Low Oil Pressure (Only Applies To Versions With Oil Pressure Sensor)

Fig 1: Oil Pressure Signal Communication
GLL153456Courtesy of VOLVO CARS CORPORATION

The oil pressure sensor is connected to the engine control module (ECM) (4/46). The engine control module (ECM) transmits the oil pressure signal onwards via the high speed section of the control area network (CAN). The central electronic module (CEM) (4/56) receives the signal and generates a corresponding signal on the low speed section of the control area network (CAN). The driver information module (DIM) (5/1) receives the signal. If the oil pressure is low, the driver information module (DIM) lights a red warning lamp to warn the driver.

HINT: In vehicles with an oil level sensor, the general warning lamp comes on and a text message appears when the oil level is too low.