Structure and inner electrical connection
The ignition coil operates according to the principle of a transformer. 2 coils are placed onto a shared ferric core. The primary coil consists of a thick wire with just a few windings. One end of the coil is attached to the positive terminal (terminal 15) of the vehicle voltage via the load-shedding relay terminal 15. The other end (terminal 1) is connected to the ignition output stage, which can use it to switch the primary current. The secondary coil consists of thin wire with many windings.
| Item | Explanation |
|---|---|
| 1 | Primary coil |
| 2 | Secondary coil |
| 3 | Spark plug |
PIN REFERENCE
| Pin | Explanation |
|---|---|
| Terminal 15 | Voltage supply (via load-shedding relay, terminal 15) |
| SIG | Ignition signal, terminal 1 |
| Kl. 4a | Earth connection |