12 13 009 Checking ignition coils (secondary coil)

WARNING: This page is about a different car, the 2003 BMW Z8, 2002 BMW Z8, 2001 BMW Z8, and 2000 BMW Z8. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

12 7 040
12 7 041
12 7 042
12 7 043
12 7 045
12 7 046
12 7 050

Carry out secondary voltage check using test adapter 12 7 040.

Important!

Observe safety precautions. Refer to 12 00 ... Information on working on ignition system , 12 00 ... Instructions for connecting and disconnecting test units and 12 00 ... Instructions on component testing .

Switch off ignition.

NOTE: The following checks can be carried out with the adapter kit:

Secondary voltage check, refer to 12 13 ... Checking secondary signal for stationary ignition distribution
Comparison between ignition coils from different manufacturers, refer to Oscillograms of ignition coils from different manufacturers
Ignition coil faults, refer to Ignition Coil Faults
Spark plug faults, refer to Spark-Plug Faults
Injection system faults, refer to Ignition Coil Faults

Fig 1: Identifying Adapter Kit

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Connect special tool 12 7 043 (connecting cable) to special tool 12 7 041 (single adapter).

Fig 2: View Of Connect Cables

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NOTE: Checks on engines with single-spark ignition coils:

Special tool 12 7 041 (single adapter) in conjunction with special tool 12 7 045 for fitting onto ignition coil.

Fig 3: Checking On Engines With Single-Spark Ignition Coils

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Remove cover for ignition coils.

Version with single-spark ignition coils:

Mount special tool 12 7 041 on ignition coils and connect to special tool 12 7 043.

Fig 4: Mounting Special Tool

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Connect DIS Tester with RZV connecting lead to last test adapter (RZV = static ignition distribution).

Fig 5: Connecting DIS Tester

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Connect trigger pliers of DIS tester to feed line on ignition coil of 1st cylinder.

Select "Measurement".
Select "Preset measurements".

Subsequent procedure in accordance with DIS instructions.

Version with rod-type ignition coils:

Unlock plug on rod-type ignition coil and disconnect.

Remove rod-type ignition coil, connect special tool 12 7 050 (adapter cable) to spark plug and ignition coil, connect ignition coil to engine wiring harness.

Fig 6: Connecting Special Tool

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Carry out measurements following DIS instructions.

Version with ignition coil block:

Raise cover on ignition coil block slightly and fit special tool 12 7 046.

Fig 7: Fitting Special Tool

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Connect special tool 12 7 046 to adapter cable 12 7 042 and then to Tester.

NOTE: The adapter cable 12 7 042 is located in the case of the adapter kit 12 7 040.

Follow instructions for troubleshooting with aid of adapter kit:

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
Further fault patterns, refer to Further Fault Patterns With Evaluation
Fault at injection system, refer to Ignition Coil Faults