HOW TO PERFORM VEHICLE IDENTIFICATION NUMBER (VIN) WRITING CAUTION: The F.A.S.T-Key (Free-hand Advanced Security Transmitter) is described as the Keyless Operation System (KOS). Follow the procedure below to register the VIN of the Wireless Control Module (WCM) and the Keyless Operation System (KOS). The VIN is stored in the engine control module (ECM), WCM, and the KOS-ECU. If the VIN is improperly erased, the engine warning light or the keyless operation system warning indicator illuminate, and the diagnostic trouble code is displayed. When the ECM, WCM, and the KOS-ECU are replaced, follow the procedure below to write the VIN. Zoom Sized for Print WRITING PROCEDURE 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 CAUTION: Check that diagnostic trouble code P0603 "EEPROM fail" is not set. When diagnostic trouble code P0603 "EEPROM fail" is set, the ECM cannot store the key code even if the key code is registered. If this diagnostic trouble code is set, troubleshoot the ECM and repair. Then register the key code to the ECM. CAUTION: Check that diagnostic trouble code P0630 "VIN not programmed" is not set. When diagnostic trouble code P0630 "VIN not programmed" is set, the VIN is not written to the ECM. After VIN is written in ECM, the Key Code Registration is executed. Zoom Sized for Print Connect scan tool MB991958 to the 16-pin data link connector as follows. NOTE: For details on how to use scan tool MB991958, refer to the "M.U.T.-III Owner's Manual." 1. 2. 3. 4. 5. 6. Ensure that the ignition switch is at the "LOCK" (OFF) position. Start up the personal computer. Connect special tool MB991827 to special tool MB991824 and the personal computer. Connect special tool MB991910 to the special tool MB991824. Connect special tool MB991910 to the data link connector of the vehicle. Turn the special tool MB991824 power switch to the "ON" position. NOTE: When the special tool MB991824 is energized, the special tool MB991824 indicator light will be illuminated in a green color. 7. Start the "M.U.T.-III system" on the personal computer and turn the ignition switch to the "ON" position. Zoom Sized for Print 8. Select "KOS/IMMO/Keyless/TPMS" button from the "System Select" screen. Then, select the applicable option code item and push the OK button. 9. Select "Special Function" on the next screen. Zoom Sized for Print 10. Select "ENG Key Code Reg." from the "Special Function" screen. Zoom Sized for Print Zoom 11. 12. 13. 14. Sized for Print Push the OK button after "ENG Key Code Reg." is displayed. Push the OK button after "Completed." is displayed. Turn off scan tool MB991958. Turn the ignition switch to the "LOCK" (OFF) position and then disconnect scan tool MB991958. VIN WRITING STEPS FOR WCM AND KOS-ECU CAUTION: Check that diagnostic trouble code B2416 "ECU internal error" is not set. When diagnostic trouble code B2416 "ECU internal error" is set, the WCM and the KOS-ECU cannot store the VIN even if the VIN is written. If this diagnostic trouble code is set, troubleshoot the WCM or the KOS-ECU and repair. Then write the VIN to the WCM or the KOS-ECU. Zoom Sized for Print Connect scan tool MB991958 to the 16-pin data link connector as follows. NOTE: For details on how to use scan tool MB991958, refer to the "M.U.T.-III Owner's Manual." 1. 2. 3. 4. 5. 6. Ensure that the ignition switch is at the "LOCK" (OFF) position. Start up the personal computer. Connect special tool MB991827 to special tool MB991824 and the personal computer. Connect special tool MB991910 to the special tool MB991824. Connect special tool MB991910 to the data link connector of the vehicle. Turn the special tool MB991824 power switch to the "ON" position. NOTE: When the special tool MB991824 is energized, the special tool MB991824 indicator light will be illuminated in a green color. 7. Start the "M.U.T.-III system" on the personal computer and turn the ignition switch to the "ON" position. Zoom Sized for Print 8. Select "KOS/IMMO/Keyless/TPMS" button from the "System Select" screen. Then, select the applicable option code item and push the OK button. 9. Select "Coding" on the next screen. Zoom Sized for Print 10. Select "VIN Writing" on "Coding" screen. Zoom Sized for Print 11. Push the OK button after the VIN written in the engine control module is displayed. 12. Push the OK button after "VIN Writing will start. Are you sure?" is displayed. 13. Push the OK button after "Completed." is displayed. Zoom Sized for Print 14. Result of VIN writing is displayed. 15. Resister the other ID code.