Rozsko Posted March 9, 2022 Report Share Posted March 9, 2022 Hi Guys, Quick question on signal voltage of cam sensors. Recently I did some crank-cam scoping and realized that the right hand cam signal is about 10V base instead of 5V that is on the left hand sensor. Initially I thought I had wrong probe settings, ie attenuator, but finally I did a quick check at the ECU, A11 pin (pin removed from the connector) and the ECU pin had 10.64V KOEO. Should I worry about that? In the past when I was doing the same cam-crank scoping, it was certainly not the case, and since even with removed pin it is that high voltage, it must not be a wiring issue. Thanks, Béla Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 9, 2022 Report Share Posted March 9, 2022 That is normal. The DI's pull-up is regulated 12V, the trig 2 pull-up is 5V. The only important requirement is that the voltage rises above 1.5V when the sensor is not grounding it and falls below 1.0V when the sensor is grounding it. Rozsko and TTP 1 1 Quote Link to comment Share on other sites More sharing options...
Rozsko Posted March 10, 2022 Author Report Share Posted March 10, 2022 Sounds good. Thanks Quote Link to comment Share on other sites More sharing options...
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