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Thread: Reverse Sensor Chirp even when off!!

  1. #1
    Regular Member Tyler Durden's Avatar
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    Vehicle : Signum

    Trim : Elite

    Engine : 2.0T

    Year : 2006

    Default Reverse Sensor Chirp even when off!!

    I've just fitted some sensors to the Signum and I've got a problem.

    I've wired them Positive to the white and black Reverse light positive and negative to the brown ground wire, and when reverse is selected it operates fine. However, when I take it out of reverse the device still makes a noise every 3 seconds or so.

    I've had a multi-meter attached and it shows a voltage of about 0.25 volts when out of reverse.

    How can I stop this, or is it even possible?

  2. #2
    North West - Assistant RO Woody's Avatar
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    Vehicle : Vectra C 3.2 Elite Estate Auto Facelifted

    Trim : Elite with loads of "Extras"

    Engine : 3.2 Z32SE

    Year : 2004

    Mileage : 94,000

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    I would suspect that it's the canbus "bulb check" system that's making this happen.

    Use the reversing lamp power to trigger a 12v relay instead, and then power the sensors with a direct 12v supply switched by the relay.

    HTH

    Woody

  3. #3
    Regular Member Tyler Durden's Avatar
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    Thanks for the response Woody.
    I think you were right, however I managed to get it working where it was. In fact when I actually plugged the light back in the chirping stopped.

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