docscobee

Help. My Saab just died at slow speed. Put new battery in because old one was dying. Started after several days trying simple trouble shooting. I’m not a mechanic but tried basic stuff found on forums. Ran 2 days then back to no start. Took it to mechanic thinking vacuum hoses needed replace, several looked pretty bad and ordered a new ingnition coil pack. He went through it and needs clarity on a few things.
Does the ignition coil ground through the trionic module? Is the trionic module 1 module or 3 separate modules? TRIonic?
He is measuring 107 kohms with ground on and only .2 with ground off.
Also he is getting 1.3 to 0 volts at mass air, temp, and crank sensors.
Also, don’t know if related, but right before this the heat and air went out. No flow and I had bought a new blower fan but had not put it in yet. Any help or ideas are appreciated! Thanks!