General notes on ignition system

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 Volkswagen GTI, 2005 Volkswagen Jetta, 2005 Volkswagen GTI, 2004 Volkswagen Jetta, and 2004 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

This section deals specifically with ignition - related components. The other components of the injection and ignition system, see 24 - MULTIPORT FUEL INJECTION (MFI) .
For the electric components to work properly, a voltage of at least 11.5 V is required.
The battery must only be disconnected and connected with the ignition switched off, since the Engine Control Module (ECM) can otherwise be damaged.
The Engine Control Module (ECM) is equipped with an On Board Diagnostic (OBD)
Components marked with * are tested via On Board Diagnostic (OBD), see DIAGNOSTIC MODE 3: CHECK DTC MEMORY .
It is possible that the control module will recognize a malfunction and store a DTC during some tests. Therefore the following work steps must be performed in the mentioned sequence after ending all tests and repairs.

- - Check DTC memory , see DIAGNOSTIC MODE 3: CHECK DTC MEMORY

- - Erase DTC memory , see DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA .

- - For completion, generate readiness code , see READINESS CODE, GENERATING .

Parts of ignition, removing and installing:

Vehicles with engine code AWD, see PARTS OF THE IGNITION, REMOVING AND INSTALLING (VEHICLES WITH ENGINE CODE AWD)
Vehicles with engine code AWP, AWW, see PARTS OF THE IGNITION, REMOVING AND INSTALLING (VEHICLES WITH ENGINE CODE AWP, AWW) .

Safety precautions, see SAFETY PRECAUTIONS .

Test data, spark plugs, see TEST DATA, SPARK PLUGS .