Thanks. the codes 302, 303,305,300, and 1399 are misfire codes. How long since your spark plugs were replaced?
The code 1676 has a service bulletin. I have it pasted below.
Got DTC P1676 or TCS DTC
31? Replace the Ignition
NOTE: This article applies to '01-03 3.2CLs and
Got a vehicle in your shop with DTC P1676
(FPTDR signal line failure) or TCS DTC 31 (engine
retard command [PFINH] signal)? A bad ignition
switch (the electrical half) could be the culprit.
NOTE: On the HDS, you'll see TCS DTC 31 listed
as TCS DTC 31-2.
Inspect the ignition switch solder joints for any
signs of overheating. If you notice the solder joints
are melted, replace the ignition switch.
The code 1710 could also be triggered by the 1676 code, so I would take care of it first.