Ignition System: Testing and Inspection

Ignition System

• 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.

• 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.

--> [ Ignition Coils with Power Output Stages, Checking ] Ignition Coils With Power Output Stages, Checking

--> [ Camshaft Position Sensor, Checking ] Camshaft Position Sensor, Checking

--> [ Knock Sensors, Checking ] Knock Sensors, Checking

--> [ Camshaft Adjusting Valves, Checking ] Camshaft Adjusting Valves, Checking

Observe Safety Precautions: --> [ Safety Precautions ] Safety Precautions

Observe Clean Working Conditions: --> [ Clean Working Conditions ] Clean Working Conditions

Test Data, Spark Plugs





* Replacing Engine Control Module (ECM) --> [ Engine Control Module ] Description and Operation