You should have power to the coil. The coil gets grounded to fire it... I *think* you can ground it yourself (very, very quickly) to verify that it will fire.

Here's an overview of the igition system:
http://lakebox.dnsalias.com/photos/1988%204runner/megasquirt/med/toyotaVAST.jpg


22REturbo.net




1988 4Runner
22RTE core, turbocharged, megasquirted...