Ignition System: Description and Operation

General NOTE On Ignition System
This section deals specifically with ignition- related components. The other components of the injection and ignition system.

NOTE:
- 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.
- Engine Control Module (ECM) is equipped with On Board Diagnostic (OBD).
- Components marked with * are tested via On Board Diagnostic (OBD), Diagnostic mode 3: Check DTC memory. Refer to 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, Diagnostic mode 3: Check DTC Memory, Refer to Diagnostic Mode 3: Check DTC Memory.

- Erase DTC memory. Refer to Diagnostic Mode 4: Reset/Erase Diagnostic Data.
- For completion, generate readiness code. Refer to Readiness Code, Generating. Monitors, Trips, Drive Cycles and Readiness Codes