P0630

GENERAL DESCRIPTION

Regulations require that all 2005 and subsequent model year vehicles shall have the Vehicle Identification Number(VIN) available in a standardized format through the standardized data link connector in accordance with SAE J1979 specifications. Using a scan tool, PERFORM "VIN WRITING" procedure after replacing or reflashing a ECM.

DTC DESCRIPTION

The purpose of this logic is to prevent a vehicle from leaving the assembly plant or service station without a VIN in its EEPROM memory.

If the VIN writing is not programmed or incompatible, the ECM determines that a fault exists and a DTC is stored.And the MIL(Malfunction Indication Lamp) turns on.

DTC DETECTING CONDITION





MONITOR DTC STATUS

1. Ignition "OFF"
2. Connect Scantool and Ignition "ON"
3. Monitor the ECM status by VIN reading whether it is virgin or learnt




4. Is the ECM status Virgin ?
YES
> Perform VIN writing procedure according to the direction on the scantool screen and go to "Verification of Vehicle Repair" procedure.
NO
> Fault is intermittent caused by poor contact in Sensor's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure

NOTE:
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by ECM. After testing ECM on the vehicle, use this function before reusing the ECM

VERIFICATION OF VEHICLE REPAIR

After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
2. Press F5(INFO) and confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions
3. Read "DTC Status" parameter
4. Is "History (Not Present)" fault displayed?
YES
> System performing to specification at this time. Clear the DTC
NO
> Go to the applicable troubleshooting procedure.