Heres a little group that has some helpful stuff.
http://groups.yahoo.com/group/hondacivicwagons
I believe the wagovan is the base wagon model. do you have the vinal seats in yours
Your engine is a d series I believe a d15 someone will fill in the letter for me.
I believe to check your timing belt you can remove the four 10mm bolts on the valve cover and the two 10mm bolts onthe timing belt cover to inspect it.
I still can't get timing right so I'll leave that to the other guys
Your ecu is under the passenger side carpet where you feet go. I believe its 4 more 10mm bolts to remove the cover but to check codes you just look at the led and count the blinks after you turn the key to the on position.
I would definitly do a complete tuneup including fuel filter.
www.hondaautomotiveparts.com is a good place for oem parts.
I hope this helps I gotta go to work I'll add more later.
Oh Welcome to the forum.:thumbup: