· Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
The DRB III tool shows the CMP and CKP sensor data as either 'Lost' or 'Present'. It is information shared on the bus to the scan tool. A 'Lost' sensor can be a wiring, jumped timing, failed sensor or PCM problem. This can be checked while cranking the engine in a 'no-start' case, so the engine doesn't even have to be running. These sensors share common powers and grounds.