Fuel level sensor (46), E39
| Fuel level sensor (46), E39 |
| Location |
Fuel level sensor (46), E39
| Main task |
Informs the ECM control module, E39 (590) on how much fuel is in the tank. ECM then sends this information on the bus.
| Type |
Consists of a float, a float arm and a potentiometer type level sensor with variable resistance, whose value corresponds to the level at which the sensor float lies in the tank. Supply voltage via pull-up in ECM.
| Connection |
|
46 pin no.
|
Signal type
|
Description
|
| 3 | Ground | Connected to ECM, control module, E39 (590), pin 26(A). |
| 2 | Signal | Connected to ECM, control module, E39 (590), pin 25(A). |
Diagram
On AWD models, the ECM uses the signal circuits on the primary and the secondary tank sensor to calculate how much fuel remains in the tank as a percentage.
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