Possible Causes
- Cylinder reference sensor or supply wires defective. See Figure .
- Cylinders No. 6 or 12 receives no ignition voltage signal.
- No spark-over at the spark plug of cylinders No. 6 or 12.
- Ignition coil defective.
- Ignition output stage of DME control unit defective. See PULSE GENERATOR - CYLINDER REFERENCE (IGNITION) .