07 altima 2.5 won't start can't get codes engine light never comes on
I have a 07 Altima about 3 weeks ago it shut off going down the road then after hitting the push button start on then off a few times it finally started. It did it again 2 weeks ago and again this week and now it will not start. when I push the button with the brake on the lights on the dash all come on like normal accept the check engine light does not then there is a light ticking noise from the engine compartment about 7 fast ticks then the cooling fans come on. but it does not start. I replaced the crank and cam sensor, load tested battery, checked starter and fuses all ok. any ideas.