Where is the camshaft position sensor on a BMW 325i?
Connect camshaft position sensor electrical connector, peel back electrical connector sealing boot (green arrow). Insert a backprobe into terminal 2, the middle terminal. Then connect the red lead of your DVOM to backprobe. Hold sensor while moving a wrench across tip.
Why do you need a camshaft position sensor?
However, in addition to the crankshaft position signal, the ECM needs a signal to distinguish the crankshaft valve-overlap top-dead-center (TDC) position from the TDC just prior to the power stroke. This signal is provided by camshaft position sensors, which help synchronize fuel injection and ignition.
Do you need to replace sensor fasteners on BMW 325i?
BMW suggests replacing the sensor fasteners when removing. This is due to Loctite used at the factory. If you do not want to replace the fasteners, be sure to apply a small amount of blue Loctite on the fastener threads.
What does the DVOM read on a BMW 325i?
In this photo the wrench (green arrow) is close to the sensor (yellow arrow), so the DVOM reads close to 0 volts. In this photo the wrench (green arrow) is close to the sensor (yellow arrow), so the DVOM reads 5 volts.
Connect camshaft position sensor electrical connector, peel back electrical connector sealing boot (green arrow). Insert a backprobe into terminal 2, the middle terminal. Then connect the red lead of your DVOM to backprobe. Hold sensor while moving a wrench across tip.
However, in addition to the crankshaft position signal, the ECM needs a signal to distinguish the crankshaft valve-overlap top-dead-center (TDC) position from the TDC just prior to the power stroke. This signal is provided by camshaft position sensors, which help synchronize fuel injection and ignition.
BMW suggests replacing the sensor fasteners when removing. This is due to Loctite used at the factory. If you do not want to replace the fasteners, be sure to apply a small amount of blue Loctite on the fastener threads.
In this photo the wrench (green arrow) is close to the sensor (yellow arrow), so the DVOM reads close to 0 volts. In this photo the wrench (green arrow) is close to the sensor (yellow arrow), so the DVOM reads 5 volts.
What should voltage be on BMW camshaft sensor?
If voltage stays at 5 volts or 0 volts while you rotate engine, and does not fluctuate, the sensor is faulty. Sensor voltage should cycle twice per engine revolution, (0-5 volts, then 0-5 volts again, per full engine rotation).
Where is Terminal 2 on a BMW sensor?
Terminal 2 is sensor reference voltage / signal wire (yellow arrow). Terminal 3 is the ground for the sensor provided by the DME (purple arrow). Wiring color and DME terminal locations may vary. Check your model against a wiring diagram.
Where can I get a camshaft sensor connector?
If your Check Engine light is on, have the code scanned at your local O’Reilly Auto Parts to see if you need a replacement camshaft sensor or connector. At O’Reilly Auto Parts, we carry camshaft position sensors and camshaft sensor connectors for most cars, trucks, and SUVs.
If voltage stays at 5 volts or 0 volts while you rotate engine, and does not fluctuate, the sensor is faulty. Sensor voltage should cycle twice per engine revolution, (0-5 volts, then 0-5 volts again, per full engine rotation).