12 13 Notes on checking ignition system for M54 engines: Notes

Troubleshooting: 

• Refer to FAULT IN FUEL INJECTION SYSTEM 
• Refer to SPARK-PLUG FAULTS 
• Refer to IGNITION COIL FAULTS 
• Refer to FURTHER FAULT PATTERNS WITH EVALUATION 
• Refer to ADDITIONAL FAULT NOTES FOR TROUBLESHOOTING 

Oscillograms: 

• Refer to NORMAL OSCILLOGRAM 
• Refer to OSCILLOGRAMS OF IGNITION COILS FROM DIFFERENT COMPONENT MANUFACTURERS 

Checking secondary signal for stationary ignition distribution: 

• Refer to CHECKING SECONDARY SIGNAL...