Partly loosening the wiring harness from the cylinder head cover on the left

NOTE: RISK OF DAMAGE 
Malfunction or failure of the DME. 
Grounding points that are not screwed on may lead to malfunction or failure of the DME. 

• Screw all screw points of the cable ducts on again. Some of the screw points are also grounding points.

• Loosen screws (1).

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.

• Unlock and disconnect the connectors (2) from the injectors with a small slotted screwdriver (1).
• Unlock the lock in the direction of the arrow with a small slotted screwdriver (1).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Disconnect the connector (2) on the connector housing from the injector.
• Unlock the connector (1) and detach from the injectors.
• Release nuts (2) and remove ground cable.
• Unlock connector (3) and detach from the rail pressure sensor.
• Loosen screws (4).
• Loosen the wiring harness from the cylinder head cover and put to one side.

Courtesy of BMW OF NORTH AMERICA, INC.