General notes on ignition system

NOTE:

Only the components which specifically relate to the ignition system are dealt with here. For the other components of the injection and ignition system. See MULTIPORT FUEL INJECTION (MFI) .
The Engine Control Module (ECM) is equipped with On Board Diagnostic (OBD).
Components marked with * are checked via On Board Diagnostic (OBD). See DTC MEMORY .
Components marked with ** can be checked via Output Diagnostic Test Mode (DTM). See OUTPUT DIAGNOSIS TEST MODE (DTM) .
For trouble-free operation of the electrical components, a voltage of at least 11.5 V is necessary.
Disconnecting and connecting the battery must only be done with the ignition switched off, otherwise the Engine Control Module (ECM) could be damaged.
Check DTC memory before carrying out repairs and for troubleshooting. See DTC MEMORY .
During some checks it is possible that the control module will detect and store a Diagnostic Trouble Code (DTC). Therefore after completing all checks and repairs the DTC memory must be checked and if necessary erased. See DTC MEMORY . Then generate the readiness code. See GENERATING READINESS CODE .
If the engine starts, runs for a short period and then stops, after troubleshooting, repairs or component tests, then the malfunction may lie with the Immobilizer which is blocking the Engine Control Module (ECM). In such cases the DTC memory must be checked and, if necessary, the control module adapted.

Safety precautions. See Safety precautions .

Test data, spark plugs. See Test Data, Spark plugs .