Check Ground Circuit

Turn ignition off. Disconnect power transistor wiring harness connector. See Figure . Check continuity between ignition coil connector terminal "b" (Black/Red wire) and power transistor connector terminal "e" (White wire). See Figure . Check continuity between power transistor connector terminal "d" (Black wire) and engine ground. If continuity is present, go to next step. If continuity is not present, repair wiring harness or connectors as necessary and perform FINAL CHECK  .