P0601

P0601

Component Location:

General Description
"The TCU checks the ROM ID whenever the ignition key is ON."

DTC Description
When the ROM ID check fails

DTC Detecting Condition:

Monitor Scantool Data
1. Connect scantool to data link Connector (DLC)
2. Ignition "ON".
3. Confirm the "ROM I.D"
4. Perform the "ROM UP-DATA"
5. Perform the Re-diagnosis
6. Is "DTC" disappeared?

YES
a. 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. Throughly 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

NO
a. Replace PCM/TCM as necessary and then go to "Verification of Vehicle Repair" procedure.

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. Using a scantool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTCs present?

YES
a. Go to the applicable troubleshooting procedure.

NO
a. System performing to specification at this time.