Version with ignition coil block:

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

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

Fig 1: Connecting Special Tool 12 7 046

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 FAULT IN FUEL INJECTION SYSTEM .