Sorry I do not have a spare PCM. This car’s PCM directly powers the injectors. The injector leads usually show a pulse but occasionally miss one. I Have not been able to identify a particular cylinder causing the steady miss. All exhaust ports are hot and all plugs and injectors have pulsed voltage.
The misfire most pronoumced just off idle as a single cylinder missing. Also at light throttle in high gear climbing a slight grade it will give a random lean miss after about 20 seconds of load. Sort of like running out of gas.