The result means Pillars won the tie 2-0 on aggregate after a 2-0 first leg win in Kano a fortnight ago.
Pillars are joined in the next round by Zambia's Zesco United who beat Kenya champions Mathare United 3-1 away to go through 5-1 on aggregate.
There was good news for Zimbabwe too, as Monomatapa lost 2-1 to Zanzibar champions Miembeni but progressed 3-2 on aggregate, and will face South Africans Ajax Cape Town.
Ugandan club KCC also secured a place in the second round following a 2-0 victory over Ferroviario Maputo of Mozambique, who entered the return match defending a one-goal advantage established two weeks ago. KCC qualified 3-2 on aggregate and their next opponents are likely to be SuperSport United of South Africa, who hold a 3-0 lead over Curepipe Starlight ahead of their match in Mauritius on Sunday.
Nigeria's other representatives Heartland, take a 4-0 advantage to Sierra Leone to face the Black Stars and will be confident of progress.