MM8 Check If All Steps Have Been Completed

- This step requires that a valid diagnostic trouble code has been obtained, all prior diagnostic steps have been completed, and the affected wiring integrity has been verified.

CAUTION: If the above is not complete, chances are that replacement of this or any other system component without specific direction will not, in most circumstances, resolve the concern and will consequently result in customer dissatisfaction.

- Have all prior diagnostic steps been completed as described above?

YES -- Replace speed sensor. Go to MM9 for drive test. MM9 Speed Sensor Output Drive Test

YES -- If no resolution, replace anti-lock brake control module. Go to MM9 for drive test. MM9 Speed Sensor Output Drive Test

NO -- Go to last diagnostic step completed and continue.