General Information
Working on ignition system
Removing and installing electronic control units
Welding work (overload protection of control units)
Disconnecting and connecting battery
Disconnec
IMPORTANT:
Disconnecting the vehicle battery will cancel the fault memories
of control
units. Consequently, before disconnecting the car's battery, always
interrogate the fault memories. Invest
(cylinder bank 5 to 8)
Necessary preliminary tasks:
Read out fault memory of control unit of Digital Motor Electronics (DME)
Switch off ignition
Remove design cover, if equipped.
Unlock hose on tank venting valve and disconnect.
NOTE: Solenoid valve (1) controls adjustment unit on inlet side.
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
Necessary preliminary tasks:
Read out fault memory of DME control unit; if necessary, work through
test schedules
Switch off ignition
Lever out expansion rivets (1).
Press lock (2) and raise in