12 13 Notes on checking ignition system

Troubleshooting 

1. -> 12 13 ... FAULT IN FUEL INJECTION SYSTEM
2. -> 12 13 ... SPARK-PLUG FAULTS
3. -> 12 13 ... IGNITION COIL FAULTS
4. -> 12 13 ... FURTHER FAULT PATTERNS WITH EVALUATION
5. -> 12 13 ... ADDITIONAL FAULT NOTES FOR TROUBLESHOOTING

Oscillograms 

1. -> 12 13 ... NORMAL OSCILLOGRAM
2. -> 12 13 ... OSCILLOGRAMS OF IGNITION COILS FROM DIFFERENT MANUFACTURERS

Check 

1. -> 12 13 ... CHECKING SECONDARY SIGNAL FOR STATIONARY IGNITION DISTRIBUTION