Hi all I'm a new member but have been a visitor over the years. I am the original owner of a 99 SL, never had any real issues with the car. Recently I let ot sit for about a year as it was never a daily driver (only 60k mikes) Well I went to start fixing it up for my son as his 1st car...I know I know lol. But It will not start. Cranks but no spark on 3 & 6, coil & PTU are good, new red top battery...I'm stumped. Problem is I can't for the life of me find a service manual with wiring diagrams and a ECU pinout with troubleshooting guide 😒. Any help is appreciated.