Need help CANBUS voltage low

Diskutiere Need help CANBUS voltage low im Mercedes E-Klasse Forum (W211) Forum im Bereich E-Klasse & CLS Forum; Hi I have a Mercedes e550 -2006. I cannot connect my car diagnostics scanner, Also workshop have no link to car. I have measured voltage on my...

  1. #1 larsk84, 11.07.2020
    Zuletzt bearbeitet: 11.07.2020
    larsk84

    larsk84 Frischling

    Dabei seit:
    11.07.2020
    Beiträge:
    1
    Zustimmungen:
    0
    Fahrzeug:
    e550
    Hi

    I have a Mercedes e550 -2006.
    I cannot connect my car diagnostics scanner, Also workshop have no link to car.
    I have measured voltage on my Diagnostics port:

    Battery disconnect:
    Resistance across pin 6-14 = 60ohm
    Resistance pin 6 to GND = 99 Ohm
    Resistance pin 14 to GND = 41 Ohm

    Voltage readings Pin 6 to GND:
    in car closed Doors 5 min = 0,03V
    When open Door = 0,68 V
    Ignition on = 1,64 V

    Voltage readings pin 14 to GND:
    In car closed Doors 5 min = 0,02 V
    When open door = 0,35 V
    Ignition on = 0,58 V

    I have full battery voltage on pin 16 = all OK
    Pin 4,5 are good grounds

    I think Maybe the N93 gateway can be bad? If I measure volt on the gateway instead of the DLC? Maybe I can get higher readings
     
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Need help CANBUS voltage low

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