Ignition system, general notes

WARNING: This page is about a different car, the 2001 Audi A6, 2000 Audi A6, 1999 Audi A6, and 1998 Audi A6. 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 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 is 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.
1. - Check DTC memory. See DIAGNOSTIC MODE 3: CHECK DTC MEMORY .
2. - Erase DTC memory. See DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA .
3. - For completion, generate readiness code. See READINESS CODE, GENERATING .

Safety precautions, see SAFETY PRECAUTIONS .

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