Ignition System: Description and Operation

Ignition System General Information

• For trouble-free operation of the electrical components a voltage of at least 11.5 V is necessary.

• It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary => [ Engine Control Module DTC Memory, Checking and Erasing ] Engine Control Module DTC Memory, Checking and Erasing.

• If the engine only starts briefly and then turns off again after troubleshooting, repair or checking of the components, it may be that the immobilizer is blocking the Engine Control Module (ECM). Then, Engine Control Module (ECM) must be adapted if necessary => Vehicle Diagnosis, Testing and Information System (VAS 5051) " Guided Functions".