Test results

Check that the CAN connections between the instrument panel and the Body Computer are not faulty. In particular, that there are no open circuit or short circuit problems

 See E1050 CAN CONNECTION LINES

Go to Step 2

There are faulty connections

Restore or, if necessary, replace the wiring

Check the Body Computer power supply is correct

Go to Step 3

Power supply not correct

Restore the correct power supply.

Replace the Instrument Panel

 Op. 5560B10 CONTROL PANEL - R+R

and check it is working correctly

End of diagnosis

The fault persists

Go to Step 4

Replace Body Computer

Op. 5505A32

End of diagnosis