Ignition System Overview

Fig 1: Identifying Ignition, Assembly Overview

Courtesy of AUDI OF AMERICA, LLC

Knock Sensor 1 -G61-
- Contacts gold plated
- To remove, the coolant distribution housing must be removed
- Removing and installing, refer to Knock Sensor 1 -G61-
Knock Sensor 2 -G66-
- Not installed on all vehicles
- Contacts gold plated
Ignition Coil with Power Output Stage -(N70, N127, N291, N292)-
- Removing and installing, refer to IGNITION COILS WITH POWER OUTPUT STAGES
- To remove, use the ignition coil puller T40039
Spark Plug
- 30 Nm
- To remove, use the spark plug removal tool 3122 B
- Removing and installing,
Bolt
- 20 Nm
- Replace
- Tightening specifications affect the function of the knock sensor
Bolt
- 10 Nm
Camshaft Position (CMP) Sensor -G40-
- Contacts gold plated
O-ring
- If damaged, replace O-ring