12 13 Notes on checking ignition system
Troubleshooting
- Fault in fuel injection system.
- Spark plug faults.
- Ignition coil faults.
- Further fault patterns with evaluation.
- Additional fault notes for troubleshooting.
- Normal oscillogram. See 12 13... Normal oscillogram (M, S, W engines only) .
- Oscillograms of ignition coils from different manufacturers
See 12 13 009 Checking rod-type ignition coils (M54, M56, N40, N42, N45, N46, N52, N62, N73) .
- Secondary signal for stationary ignition distribution. See 12 13... Checking secondary signal for stationary ignition distribution .