Ignition System Component Overview

For trouble free operation of the electrical components a voltage of at least 11.5 volts is necessary.
It is possible that the Engine Control Module (ECM) will recognize a malfunction and store a Diagnostic Trouble Code (DTC) during some tests. After completing all checks and repairs, check the DTC memory and erase the memory, if necessary. Refer to the vehicle diagnostic tester.
If the engine only starts briefly and then turns off again after troubleshooting, repairs or checking of the components, it may be that the immobilizer is blocking the ECM. The ECM may have to be adapted. Refer to "Guided Functions" in the vehicle diagnostic tester.

Fig 1: Identifying Ignition, Assembly Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Knock Sensor 2 Connector
- Gray
- Contacts are gold plated.
- Installed position, refer to Fig 2.
Knock Sensor 1 Connector
- Green
- Contacts are gold plated.
- Installed position, refer to Fig 2.
Knock Sensor 2 -G66-
- Note the installed position: The wire connection points 45° toward the right on the outside.
Knock Sensor 1 -G61-
- Note the installed position: The wire connection points downward vertically.
Bolt
- 20 Nm
- The tightening specification affects the function of the knock sensor.
Ignition Coil with Power Output Stage -N70, N127, N291, N292, N323-
- Removing and installing, refer to IGNITION COIL WITH POWER OUTPUT STAGE .
Spark Plug
- 25 Nm
- Type and electrode gap, refer to TEST DATA AND SPARK PLUGS .
- Remove and install using the spark plug removal tool 3122 B. Refer to TEST DATA AND SPARK PLUGS .
Bolt
- 10 Nm
Camshaft Position Sensor -G40-
- Contacts are gold plated.
O-ring
- No replacement part available.

Fig 2: Identifying Installation Position Of Harness Connectors For Knock Sensors

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.