If it is impossible to guarantee the functionality of vehicle, due to introduction of IS, an alternative method described in CISPR 22 (according to Figures 2a to 2d of the appendix to this annex) shall be applied.
MÉTHODE D'ESSAI D'IMMUNITÉ DU SEEE AUX PERTURBATIONS TRANSITOIRES RAPIDES/EN SALVES CONDUITES SUR LES LIGNES D'ALIMENTATION EN COURANT ALTERNATIF OU CONTINU