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  . See 12 13... ADDITIONAL FAULT NOTES FOR TROUBLESHOOTING  or 12 13... ADDITIONAL FAULT NOTES FOR TROUBLESHOOTING .

Oscillograms -> Normal oscillogram

-> Oscillograms of ignition coils from different manufacturers

Check -> SECONDARY SIGNAL FOR STATIONARY IGNITION DISTRIBUTION