The TCU check ROM I.D all the time, in order to maintain for best condition and surrounding.
The TCU set this code When the ROM I.D is changed by external force or input non-available data.
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Check sum fault | ● Faulty TCM |
Enable Conditions | ● IG "ON" | |
Threshold Value | ● CAN message transfer error | |
Diagnostic Time | ● More than 1sec | |
Fail safe |
Connect scantool to data link connector(DLC).
Ignition "ON".
Confirm the "ROM I.D".
Perform the "ROM UP-DATE".
Perform the Re-diagnosis.
Is "DTC" disappeared?
▶ Fault is intermittent caused by poor contact in the sensor's and/or PCM/TCM's connector or was repaired and PCM/TCM 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.
▶ Replace PCM/TCM as necessary and then go to "Verification of Vehicle Repair" procedure.
After a repair, it is essential to verify that the fault has been corrected.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
Using a scantool, clear DTC
Operate the vehicle within DTC Enable conditions in general information.
Are any DTCs present ?
▶ Go to the applicable troubleshooting procedure.
▶ System performing to specification at this time.
