P206 SAGEM BOBINA 96 363 378 80 O 2526182A

Hello everyone.
He would ask if between pins No. 4 and No. 3 of the Sagem 2526182 A coil must have continuity. All the characteristics of mine that are themselves comply, but light the first and second cylinder only and therefore anti -antamination anomaly!
The second question is if there is any difference between 2526182 Ay 2526182 B, to be able to buy it new, if it is not worth it.
Thanks in advance for your answers:
Sam