B1703

DTC B1703: Transponder Data Inconsistent

DTC SET CONDITION

The encrypted code sent by the transponder is not the same encrypted code which is registered in the ETACS-ECU.
NOTE:
DTC B1703 is always set together with MFI system DTC P0513.

TROUBLESHOOTING HINTS

- The encrypted code in the ignition key has not been properly registered
- Malfunction of ETACS-ECU

DIAGNOSIS

Required Special Tools:

- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A

Recheck for diagnostic trouble code.

Register all the ignition key encrypted code again, and recheck for diagnostic trouble code.





(1)Turn the ignition switch to "ON" position.
(2)Register all the ignition keys again (Refer to Procedures).
(3)Turn the ignition switch to the "LOCK" (OFF) position.
(4)Turn the ignition switch to "ON" position.
(5)Erase the diagnostic trouble code.
(6)Turn the ignition switch to the "LOCK" (OFF) position.
(7)Turn the ignition switch to "ON" position.
(8)Check if the diagnostic trouble code is set.
(9)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the diagnostic trouble code set?

YES Replace the ETACS-ECU, and then record the VIN. Then, register the encrypted code again (Refer to Immobilizer System). Retest the system.

NO The procedure is complete.