General notes on ignition system

• For the electric components to work properly, a voltage of at least 12.5 V is required.
• 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) J623. DTC memory must then be checked and if necessary, the Engine Control Module (ECM) J623 must be adapted. → Engine Control Module (ECM) J623, replacing .
• It is possible that the Engine Control Module (ECM) J623 will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, the DTC memory should therefore be checked and erased if necessary.

The following work steps must be performed in the mentioned sequence:

1. Check DTC memory..
2. If necessary, erase DTC memory..
3. If DTC memory was erased, generate readiness code..