Karthikeyan, who raced in AutoGP series last season for Zele Racing and Super Nova International, said nothing has been finalised but he is expected to sign a contract with one of the teams very soon.
The 37-year-old Karthikeyan appeared in car testing for the series, which is top level single-seater racing in Japan, in Fuji last week.
"I am sure something will come out very soon. I am talking to some teams," Karthikeyan said on the sidelines of the launch of T1 Prima Truck Racing championship.
Japan's top driver Kazuki Nakajima, who raced for Williams from 2007 to 2009, will also be part of the series.
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Asked if he would be part of the new series Formula E, Karthikeyan replied in the negative. Karun Chandhok is expected to drive for Mahindra Racing in that series.
Talking about the new era in Formula One with the change in regulations from 2014 season onwards, Karthikeyan said teams would be jittery in first few races.