12 51 100 Replacing Wiring Harness Section For Ignition and Injectors

12 51 100 Replacing Wiring Harness Section For Ignition And Injectors (N55)







IMPORTANT: Read and comply with notes on protection against electrostatic discharge (ESD protection).







Necessary preliminary work:
- Read out fault memory of DME control unit.
- Switch off ignition.
- Disconnect battery earth lead.
- Remove rear ignition coil cover.
- Remove clean air pipe.
- Remove rear ignition coil cover.







Unlock rear plug (1) from the control unit and disconnect.

Release rear wiring harness from intake plenum.







Release bolt (1) at rear of cable channel.

Tightening torque 12 90 1AZ.







Release nuts (1) and remove earth cable.

Tightening torque 12 90 5AZ.

Unlock all connectors from ignition coils and injectors and detach.

Unclip wiring harness (2), feed out and remove.







NOTE:
Check stored fault messages.
Delete fault memory.