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 tasks:

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

Release rear wiring harness from intake plenum.

Fig 1: Identifying Rear Plug

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Release bolt (1) at rear of cable channel.

Tightening torque 12 90 1AZ .

Fig 2: Identifying Bolt At Rear Of Cable Channel

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Release nuts (1) and remove earth cable.

Tightening torque 12 90 5AZ .

Unlock all connectors from ignition coils and injectors and detach.

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

Fig 3: Identifying Wiring Harness And Nuts

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NOTE: Check stored fault messages.
Clear diagnostic fault entries from fault memory.