Ignition System: Description and Operation

Ignition system, servicing

Ignition system, general information


NOTE:
- Only the components which specifically relate to the ignition system are dealt with here.
- Components marked with * are checked via the On Board Diagnostic (OBD).
- For trouble-free operation of the electrical components a voltage of at least 11.5 V is necessary.
- During some checks it is possible that the control module will recognize and store a DTC. Therefore after completing all checks and repairs the DTC memory must be checked and if necessary erased.
- If the engine starts, runs for a short period and then stops, after Guided Fault Finding, repairs or component tests, then the malfunction may lie with the immobilizer which is blocking the engine control module. The DTC memory must be interrogated and if necessary the control module adapted.

Safety precautions Service Precautions

Test data, spark plugs Refer to "Spark Plug", Application and ID