[Diy_efi] help: Need to identify type of cam ref sensor

[Damian Long]

Hi, I have a factory cam ref sensor that I am trying to interface with an ecu. The ecu uses a lm1815 variable reluctance trigger. So what I need is a reluctance waveform. I cannot identify the type of sensor that is mounted inside the distributor of my car. 
   
  The sensor looks very much like an inductive sensor. Its mounted inside the distributor and has a steel wheel with a large tooth that passes it. It has only two terminals. One is connected to ground, the other one went to the original factory ecu. The sensor is a Mitsubishi sensor L911R (I think).
   
  All I have to go by is the factory manual troubleshooting
   
  volts at idle 3v
  If ecu terminal voltage at idle is 0v then open circuit to sensor (this would make you think the sensor makes its own power)
   
  When I connect the sensor to an oscilloscope I get nothing. No waveform whatsoever. 
   
  Sensor characteristics. 
  Resistance: ~6Mohm
  Capacitance: 0.03mF
  Inductance : seems to have none
   
   
  Thats all I know. Anyone know what it is? Its driving me batty. 

		
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