2011 BMW intermittent K-CAN codes
This BMW sets intermittent K-CAN codes in about 10 modules and in my first capture, CH C shows the green wire K-CAN signal is erratically toggling above ground at the HVAC module and CH D is the yel K-CAN wire at the HVAC. The same K-CAN signals are at the radio.
There are no signs of any water in the trunk but there is a lot of white corrosion in the wire harness under the driver side carpet, caused by water intrusion.
In the second capture,
CH A is the grn K-CAN wire at the radio
CH B is the yel K-CAN wire at the radio
CH C is the grn K-CAN wire at the HVAC
CH D is the yel K-CAN wire at the HVAC
I don't think that the last capture is a good K-CAN signal
Someone gave me a good K-CAN waveform and in the last capture, the lower voltage should not be wavy, the lower voltage should be flat at 884mv.