12 51 100 Replacing wiring harness section for ignition and injectors (N55 Hybrid)

WARNING: High-voltage system - danger to life!
The following points must be strictly observed prior to starting work:

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

Necessary preliminary work:

Release positive battery cable (1) from cable channel.

Disengage cable channel cover (2) to the left and lift out.

Fig 1: Identifying Ignition And Injectors Wiring Harness Section Positive Battery Cable And Cable Channel Cover

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Release wiring harness from cable channel.

Release screws (1).

Release lock (2).

Remove cable channel (3).

Remove soundproofing (4).

Fig 2: Identifying Ignition Coil Screws, Lock, Cable Channel And Soundproofing

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Release oxygen sensor connector (1) from bracket.

Release screw (2).

Put cable clip aside.

Fig 3: Identifying Oxygen Sensor Connector And Screw

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

Release rear wiring harness from intake plenum.

Fig 4: Identifying Control Unit Rear Plug

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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 5: Identifying Ignition And Injector Wiring Harness And Nuts

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NOTE:

Check stored fault messages.

Clear diagnostic fault entries from fault memory.