Error message CD changer
The fault is actually inside the CD changer, when one disc is selected the changer moves the gearing inside to slot from one CD to the other.
While this operation is happening the selection arm jams !!
Then giving an error at the radio display..
To fix the problem, disconnect the CD changer from the trunk of the car,
take off the top plastic slide cover,
with a small screwdriver slowly move the gearing so that the CD disc holder will move back to the load - unload position.
Pop out the CD holder.
Replace unit, reconnect the optic and power lead, switch on radio and the unit will work again,
grease the moving parts with light lubricant