XC70 L5-2.5L Turbo VIN 59 B5254T2 (2003)
Ignition Coil: Description and Operation
Ignition Coils
The ignition coils supply the spark plugs with high voltage to produce sparks. The engine control module (ECM) controls the ignition coils so that sparks
are generated at the correct time.
Each ignition coil has its own integrated power stage.
The ignition coils are in the spark plug wells above each spark plug.
The ignition coils for each cylinder have different terminals in the engine control module (ECM), depending on whether the engine has 5 or 6 cylinders.
The engine control module (ECM) can diagnose the ignition coils.
