Thanks for the response.  I have tested the wire coming from the ignition
module to the ECU and it is supplying a pulse to the ECU.  Now the problem is
that the fuel pump doesn't cycle on and off, as it formerly did, when the key
is turned on but before the engine is started.  Also, all of the injectors
are open and spraying fuel constantly.  I would appreciate any help solving
this puzzle by locating the components on the circuit board which could
contribute to this problem.  Thanks.

Rico