12 13 Notes on checking ignition system

Troubleshooting:

1. -> Fault in fuel injection system.
2. -> Spark plug faults.
3. -> Ignition coil faults.
4. -> Further fault patterns with evaluation. Refer to 12 13 ... FURTHER FAULT PATTERNS WITH EVALUATION .
5. -> Additional fault notes for troubleshooting. Refer to 12 13 ... ADDITIONAL FAULT NOTES FOR TROUBLESHOOTING .

   Oscillograms:

6. -> Normal oscillogram. Refer to 12 13 ... NORMAL OSCILLOGRAM (N42, N62) .
7. -> Oscillograms of ignition coils from different manufacturers.

   Check:

8. -> Secondary signal for stationary ignition distribution. Refer to 12 13 ... CHECKING SECONDARY SIGNAL FOR STATIONARY IGNITION DISTRIBUTION .