Hint:

How to proceed with troubleshooting
Terminals of ecuSystem description
General
This system has the following functions: manual slide
open and close; auto slide open and close; manual tilt up
and down; auto tilt up and down; jam protection; and key
off operation.
Function of main component
System operation
The sliding roof has the following ...
If a warning message is displayed
The multi-information display
shows warnings of system
malfunctions,
incorrectly performed operations,
and messages that
indicate a need for maintenance.
When a message is
shown, perform the correction
procedure appropriate
to the message.
If a warning message is displayed
again after the appropri ...
Short to b+ in can bus line
Description
There may be a short circuit between the can bus line and +b when there is
resistance between
terminals 6 (canh) and 16 (bat) or terminals 14 (canl) and 16 (bat) of the dlc3.
Wiring diagram
Inspection procedure
Notice:
Turn the ignition switch off before measuring ...