D19 - Check For C3 Open In Coil-Coil Disconnected-Key Off

^ Key off.

^ Disconnect coil from coil tee. Leave vehicle harness connected to coil tee.

^ Set DVOM to 2K ohms scale.

^ Measure resistance between J13 (C3C) and J60 (B-).

^ Is resistance less than 2K ohms?

YES -- GO to D20. D20 - Check For C3 Short Low In Harness-Key Off

NO -- Replace coil pack. C3 open or shorted low in coil. Remove diagnostic harness. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.