FIA president Max Mosley says he is waiting to see what McLaren submit to the governing body on Renault, after suggestions that the Woking-based squad may have evidence against their French rival.
McLaren were stripped of all their constructors' championship points and fined a record $100 million for a spying controversy involving leaked Ferrari data.
The British squad's suspended chief designer Mike Coughlan was found to be in possession of a 780-page document with Ferrari information.
Mosley said McLaren team boss Ron Dennis had promised to deliver information that could be detrimental to Renault.
"We haven't had the complaint or the detail we have been promised from McLaren about that, but when we get it, we will investigate," Mosley told BBC Radio 5.
"We've had a dossier from Renault which doesn't look particularly damning, but then again, you wouldn't expect it to. It's allegedly an employee who took some floppy disks with him, but we must wait and see what comes out from McLaren.
"I said to him, 'When you have got your dossier together Ron, let's have it'. He, with Renault's agreement, sent experts into Renault to look at their computer system recently.
"So obviously when he has got that report, if there's something significant in it, I have no doubt he will let us have it."
Renault team boss Flavio Briatore, however, said in Friday's press conference for the Belgian Grand Prix that the French squad had nothing to hide.
"First, if somebody tells me it's the same, I sue somebody, quickly," Briatore said. "Second, it's not an investigation regarding myself and the team. Third, we give all the information to the Federation, at least when we found out something, and this is it. It's as simple as that.
"I think McLaren was judged by the World Council, and there was enough evidence to find McLaren guilty, it's as simple as that. I don't want, at this moment (talk) about Renault because first we are not being investigated, second we give all our evidence to McLaren and to Mr Mosley and to the Federation."