12 13 009 Checking ignition coils (M60, M62, S62)

Switch off ignition.

Acoustic cover version 1: 

(Acoustic cover screwed down)

Remove sealing caps (1).

Release nuts (2).

Remove acoustic cover.

Fig 1: Removing Acoustic Cover

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Acoustic cover version 2: 

(Acoustic cover with press-stud fastener)

Press press-stud fasteners (1 to 4) in succession and simultaneously raise acoustic cover slightly. Remove acoustic cover when all four press-stud fasteners have been unlocked.

Fig 2: Removing Acoustic Cover

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Installation: 

Position acoustic cover and press downwards until press stud fasteners (1... 4) are heard to engage.

Installation: 

Check profile seal (1) for damage and correct seating, replace if necessary.

Fig 3: Checking Profile Seal For Damage

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S62: 

Release cap nuts (1) on left and right.

Remove cover (2) on ignition coils on left and right.

Fig 4: Removing Cover On Ignition Coils

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Use adapter set 12 7 040 to check ignition coils.

Fig 5: Attaching Special Tool

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Switch off ignition!

Attach single adapters 12 7 041 to ignition coils of left and right cylinder banks.

Fig 6: Attaching Single Adapters To Ignition Coils

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Connect single adapters 12 7 041 with connecting cable set 12 7 043.

Fig 7: Connecting Single Adapters

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Connect DIS Tester to diagnosis socket. Connect RZV connection line of DIS Tester to last test adapter.

Fig 8: Connecting Tester To Diagnosis Socket

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Connect trigger pliers of DIS Tester to supply lead of ignition coil of 1st cylinder.

• Select < Measurement >
• Select < Preset measurements >
• Select < Secondary ignition signal >
• Select < Stationary ignition distribution >
• - Select < 8 cylinders >

For subsequent procedure, follow DIS instructions.

Notes on troubleshooting using adapter set:

• Normal oscillogram, refer to 12 13 ... Normal oscillogram (M, S, W engines only) 
• Ignition coil comparison, refer to Ignition Coil Faults 
• Ignition coil fault, refer to Ignition Coil Faults 
• Spark plug fault, refer to Spark-Plug Faults 
• Additional fault patterns, refer to Further Fault Patterns With Evaluation 
• Fault on injection system, refer to Fault In Fuel Injection System 
• Additional fault instructions, refer to Additional Fault Notes For Troubleshooting