Electronic engine control unit, Ignition coil 1 with output stage, Ignition coil 2 with output stage, Ignition coil 3 with output stage, Ignition coil 4 with output stage
J519 - On-board power supply control unit;
J623 - Engine control unit;
N70 - Ignition coil 1 with output stage;
N127 - Ignition coil 2 with output stage;
N291 - Ignition coil 3 with output stage;
N292 - Ignition coil 4 with output stage;
Q23 - Spark plug 1;
Q24 - Spark plug 2;
Q25 - Spark plug 3;
Q26 - Spark plug 4;
T4j - 4-pin connector;
T4k - 4-pin connector;
T4l - 4-pin connector;
T4m - 4-pin connector;
T14a - 14-pin connector, front left in the engine compartment;
T91a - 91-pin connector;
T105a - 105-pin connector;
15 - Ground point on the cylinder head;
281 - Ground point 1, powertrain wiring harness;
D189 - Connection (87a) in the engine wiring harness
Text copied from this resource skodabook