B6 - Check For IDM Short High In Harness

^ Key off.

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

^ DVOM on 20 volt DC scale.

^ Key on.

^ Measure voltage between J23 (IDM) and J7 (B-).

^ Is voltage less than 0.5 volt DC?


YES -- Go to B7. B7 - Check For IDM Short Low In Harness


NO -- Service IDM short high in harness between PCM connector and ICM connector. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.