D12 - Check C4 At Coil Connector While Cranking

^ Connect an incandescent test lamp between J1 (B+) and J18 (LC4C).

^ Crank engine.

^ Does lamp blink consistently and brightly (one blink par engine revolution)?

YES -- Replace left coil pack. Input to coil pack is OK, but no high voltage output. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.

NO -- Replace ICM. C4 open in ICM. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.