Verifying Vehicle Repair

Verification of the vehicle repair will be more comprehensive for vehicles with OBD II system diagnostics. Following a repair, the technician should perform the following steps:
1. Review the Failure Records and the Freeze Fame data for the DTC which was diagnosed. Record the Failure Records or the Freeze Fame data. The Freeze Frame data will only store for an A or B type diagnostic and only if the MIL has illuminated.
2. Clear the DTCs.
3. Operate the vehicle within the conditions noted in the Failure Records or the Freeze Frame data.
4. Monitor the DTC status information for the specific DTC which has been diagnosed until the diagnostic test associated with that DTC runs.

Following these steps are very important in verifying repairs on the OBD II systems. Failure to follow these steps could result in an unnecessary repair.

Confident verification of a DTC repair can only be done by matching the test descriptions of the DTC and ensuring that the DTC test runs and passes. To know if a test runs and passes use the scan tool, select DTC Status, and note the DTC that needs verification. The status of the diagnostic test can be now observed. For symptom repairs, drive the vehicle and ensure the symptom is gone.