Fernando Alonso reveals reason for crash in Spain

Fernando Alonso has blown apart McLaren's theory a gust of wind was the cause of the pre-season testing accident which forced him out of the season-opening Australian Grand Prix.

Alonso has been declared fit for Sunday's race in Malaysia following a medical examination.

The double world champion sustained concussion from the crash in Spain, which resulted in him missing the third and final test in Barcelona, along with race at Melbourne's Albert Park.

After the crash, McLaren immediately dismissed suggestions there was any fault with their car.

Instead, the Woking-based marque suggested it was a freak of nature that resulted in Alonso losing control of his car and hitting a wall at the Circuit de Catalunya.

However, Alonso, conducting his first media session since the accident, has claimed the steering wheel locked, forcing him off track.

"It was a normal concussion," Alonso said. "I had it when I went to the hospital, but I went there in good condition.

"But there is a time I don't remember, from 2pm to 6pm - something like that.

"But everything was normal because of the medication they give you to go to the helicopter, and then to do some tests at the hospital.

"So everything was normal - I didn't wake up in '95, or speaking Italian, or all these things that were out there.

"I remembered the accident, and everything the following day.

"There is nothing in the data, anything clear we can spot and we can say it was that, but definitely there was a steering problem in the middle of turn three. It locked to the right.

"I approached the wall, braked at the last moment, downshifted from fifth to third.

"Unfortunately we are still missing acquisition data on that particular area of the car. It's not at the top.

"There are some new sensors here for this race, some changes we have made to the steering rack and other parts."

Attempting to explain McLaren's rationale behind their early remarks, Alonso added: "Some of the confusion comes from the very early quotes and very early explanations.

"That was because the attention and stress was very high at that moment, with me in intensive care, and an urgency to say something."