Pic stopped at the Pinhierinho curve with twenty minutes remaining.
"The day started well for me as I completed some aerodynamic testing whilst acclimatising to one last new circuit for me. This afternoon we were focusing rather more on set-up work and the behaviour of the tyres in race-representative conditions", said the outgoing Marussia driver.
"We were not able to get a good read of the option tyre and then unfortunately, towards the end of the session, I had to pull off the track as we experienced an alternator problem. I’m pleased with my long run pace but we have some more work to do to improve our qualifying pace".
Timo Glock also had a difficult day.
"It has been a difficult start to the weekend to be honest. As usual it’s all about the tyres and we are experiencing a bit of a different behaviour here again", he said.
"We had quite a bit of oversteer in the car this morning, which was slightly better for FP2. However, at the end of the day we were still struggling with the balance of the car. Overall we concentrated more on race pace and didn’t do much for qualifying yet, so we have some work to do tonight when we will try to improve the car and, I hope, make it a bit quicker!"