TCU saves "LEARNING VALUE" and keeps it at certain value. Thorough this process, in order to "LEARNING VALUE" is protected from being erased at disconnecting battery cable and maintaining related components.
The TCM is detected an unexpected communication error with "EEPROM", the TCM sets this code.
Item | Detecting Condition | Possible cause |
DTC Strategy | ● Check Voltage range | ● Faulty TCM ● Faulty in harness |
Enable Conditions | ● Ne is normal ● Ne ≥ 400rpm ● Vb(Backup-line) ≥ 9V ● Not Fail Safe Status ● IG "ON" | |
Threshold value | ● Backup-line ＜ 7 Volt | |
Diagnostic Time | ● 10sec | |
Fail Safe |
Connect scantool to data link connector.
Ignition "ON" ＆ Engine "OFF".
Monitor the "DTC".
Is DTC Re-displayed?
▶ Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and then go to "Verification of Vehicle Repair" procedure.
▶ 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.
