DTC 21

DTC No. 21 / No. 22: Internal Error of Keyless Start Control Module (EEPROM Reading Error) / (EEPROM Writing Error)

DTC Detecting Condition and Trouble Area

DTC Detecting Condition And Trouble Area:

DTC Confirmation Procedure
1. Clear DTC referring to DTC Clearance.
2. Turn ignition knob switch pushing ignition knob switch.
3. Push request switch of each door.
4. Check DTC referring to DTC Check. DTC Check

DTC Troubleshooting
Substitute a known-good keyless start control module and recheck.