9-3 FWD (9440) L4-2.0L Turbo (B207R) (2009)
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Burn-off:
The BCM sends a powerful current through the sensor to burn off any oxide in the connections for a duration of 600ms during ignition. The BCM feeds
the sensor with a battery voltage via a 330 ohms resistor. Polarity is reversed during normal operation which allows the entire burn-off current to pass
through a diode built into the sensor.
