tieol84

G'day guys,
2008 c63 amg, it was from a wrecker
Now the overhead control panel plays up. Once the car starts, interior lights stay on for 1mins or 2 then off.
Scan the car, these fault codes are read from front SAM.
U021300 Communication with the inside rearview mirror has a malfunction._ CURRENT and STORED
U016900 Communication with the overhead control panel has a malfunction._CURRENT and STORED

Check the fuse ok, power supply, Correct voltage. earth is good, as attached.

As shown in the diagram, the voltage on LIN bus and the interior CAN H seems wrong.

Any ideas are welcome.

Nicholi2007

What was the resolution? I'm having U016900 with overhead console...

tieol84

Bypass the CAN wire from ocp to the distributor and its working

roadtalontsi

Can high is definitely not right.