I don't think the recall units would have a failure that causes the light to flash... it's more about what happens as they're detonated.
Your Titan should be able to flash an error code to tell you more about what fault is causing the light to come on. Check out your truck's factory service manual at http://www.nissanservicemanual.com
. On our G35, a moron technician at the dealership left the wiring harness dangling under the driver's seat, and it was getting pulled when the seat moved. I fixed it with some cable ties, along with some other stupid stuff he did under there.