AA27 - Check For Coil- Open In Harness

^ Key off.

^ Disconnect diagnostic harness ICM tee from ICM only; leave ICM tee connected to vehicle harness.

^ Disconnect B+ lead of DI diagnostic harness from battery.

^ DVOM on 200 ohm scale.

^ Measure resistance between J3 (COIL COIL-) and J4 (ICM COIL-).

^ Is resistance less than 5.0 ohms?


YES -- Go to AA28. AA28 - Check For Coil- Short High In Harness


NO -- Service open coil between ICM and coil in harness. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.