12 51 100 Replacing Wiring Harness Section For Ignition Coil (N73)

WARNING: This page is about a different car, the 2008 BMW 760Li and 2007 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Read out fault memory of DME control unit.
Remove manifold . See 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (N73) .

Release grounding points (1).

Fig 1: Identifying Grounding Points (1 Of 2)

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Release grounding points (1).

Fig 2: Identifying Grounding Points (2 Of 2)

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Disconnect plug connections (1) on rod-type ignition coils. See 12 13 009 CHECKING ROD-TYPE IGNITION COILS (M54, M56, N40, N42, N43, N45, N46, N52, N62, N62TU, N73)

Fig 3: Identifying Rod-Type Ignition Coils, Cylinders 1 To 6

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Disconnect plug connections (1) on rod-type ignition coils. See 12 13 009 CHECKING ROD-TYPE IGNITION COILS (M54, M56, N40, N42, N43, N45, N46, N52, N62, N62TU, N73)

Fig 4: Identifying Rod-Type Ignition Coils, Cylinders 7 To 12

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Unscrew bolt (1).

Release retaining clip (2).

Remove cover (3).

Installation:

Install profile seals correctly to ensure watertightness.

Fig 5: Identifying Screws, Retaining Clip & Cover

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Disconnect plug connection (1).

Disconnect plug connection (2).

NOTE:

Plug color: Black (DME).

Plug color: Gray (DME 2).

Disconnect plug connection (3).

Fig 6: Identifying Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.