A27 - Check CKP Sensor and Trigger Wheel - Key Off

^ Key off.

^ Check trigger wheel for damage.

^ Is the sensor and trigger data wheel OK?

YES -- Replace CKP sensor. No output. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.

NO -- Service or replace bad parts. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.