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Interior light I22

Discussion in '90-Series Tech' started by Pingo, Jul 11, 2017.

  1. Pingo

    Pingo

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    Joined:
    Jun 23, 2017
    Location:
    Denmark
    Hi,

    Due to dust in the contact the interior light/roof lamp did not work, but before I knew that I made a measurement of pin 1 and 2 on I22.

    With the door closed:
    Pin1 / grund was +13,7V
    Pin2 / grund was +13,7v

    With the door open:
    Pin1 / grund was +0,8V
    Pin2 / grund was +13,7v

    Then when I connected the roof lamp to I22 again and it was free hanging with no ground it lit ??...

    Can someone explain me how ??..

    Br