Monitor SCANTOOL Data

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

Fig 1: Scan Tool Display - VIN Reading
Courtesy of HYUNDAI MOTOR CO.
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 PCM' s connector or was repaired and PCM 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 PCM. After testing PCM on the vehicle, use this function to reuse the PCM on the others