• DOSS physically disconnected

• Poor connection on DOSS or controller side

• Faulty harness

• Faulty DOSS

• Faulty controller

• Ensure that the DOSS is clipped firmly into its carrier and

that the harness is plugged in on both the DOSS and

controller side

• Check for bad connections

• Replace DOSS harness

• Replace DOSS unit

• Replace faulty controller