HOW TO PERFORM CHASSIS NUMBER (CHASSIS NO.) / VEHICLE IDENTIFICATION NUMBER (VIN) WRITING FOR ENGINE-ECU, KOS&OSS-ECU AND ETACS-ECU


The chassis No./Vehicle Identification Number (VIN) is stored in the engine-ECU, the KOS&OSS-ECU and the ETACS-ECU. If the Chassis No./VIN is improperly erased, the engine warning lamp or the keyless operation system warning indicator illuminates, and the diagnosis code is displayed. When the engine-ECU, the KOS&OSS-ECU, the electric steering lock and the ETACS-ECU are replaced, follow the procedure below to write the Chassis No./VIN.

SCREEN FLOW OF M.U.T.-III






note
  • Chassis No./VIN writing of the OSS ECU and electric steering lock is described in "Keyless Operation System (KOS)". (Refer to GROUP 42B - On-vehicle Service <OSS ECU>).
  • Perform the variant coding of the engine-ECU when the chassis No./VIN or the vehicle identification number is registered to the engine-ECU.

WHEN ENGINE-ECU IS REPLACED

Chassis No./VIN registration steps for ENGINE-ECU
caution
  • Check that diagnosis code No.P062F "EEPROM malfunction" is not set. When diagnosis code No. P062F "EEPROM malfunction" is set, the engine-ECU cannot store engine key code and chassis No./VIN even if the engine key code and chassis No./VIN are registered. If this diagnosis code is set, troubleshoot the engine-ECU and repair, and then register the engine key code and chassis No./VIN to the engine-ECU.
  • Before connecting or disconnecting the M.U.T.-III, turn the ignition switch to the "LOCK" (OFF) position.


Connect the M.U.T.-III to the 16-pin diagnosis connector as follows.
note For details on how to use the M.U.T.-III, refer to the "M.U.T.-III operation manual."
1.Start up the personal computer.
2.Connect special tool V.C.I.-Lite USB cable (MB992747/MB992748) or M.U.T.-III USB cable (MB991827) to V.C.I.-Lite (MB992744) or V.C.I. (MB991824) and the personal computer.
3.Connect V.C.I.-Lite main harness A (MB992745) or M.U.T.-III main harness A (MB991910) to the V.C.I.-Lite or V.C.I.
4.Connect the V.C.I.-Lite main harness A or M.U.T.-III main harness A to the diagnosis connector of the vehicle.
note When the V.C.I.-Lite is connected to the diagnosis connector, the V.C.I.-Lite indicator lamp will be illuminated in a green colour.
5.Turn the V.C.I. power switch to the "ON" position. <When using the V.C.I.>
note When the V.C.I. is energised, the V.C.I. indicator lamp will be illuminated in a green colour.
6.Start the M.U.T.-III system on the personal computer and turn the ignition switch to the "ON" position.
7.Select "KOS/OSS/IMMO/Keyless" in the "System Select" screen. Select the model year and push the OK button (Check each model if there is an option). Select "Special Function" on the next screen, and select "ENG Key Code & Chassis No/VIN Reg" on the further screen.

8.Push the OK button after "Key Code Registration" is displayed.
9.Push the OK button after "Completed. Press OK button and move to Chassis No./VIN writing function." is displayed.

10.Enter the Chassis No./VIN of registering vehicle and push the OK button.
11.Push the OK button after "Chassis No./VIN Writing will start. Are you sure?" is displayed.
12.Return to the previous screen and "In Progress" is displayed at the lower-left corner on the screen.
13.Push the OK button after "Completed." is displayed.

14.Chassis No./VIN writing result is displayed.

WHEN KOS&OSS-ECU OR ELECTRIC STEERING LOCK IS REPLACED

Chassis No./VIN registration steps for KOS&OSS-ECU
caution
  • Check that diagnosis code No. B2416 "ECU internal error" is not set. When diagnosis code No. B2416 "ECU internal error" is set, the KOS&OSS-ECU cannot store the Chassis No./VIN even if the Chassis No. is written. If this diagnosis code is set, troubleshoot the KOS&OSS-ECU and repair, and then write the Chassis No./VIN to the KOS&OSS-ECU.
  • Before connecting or disconnecting the M.U.T.-III, turn the ignition switch to the "LOCK" (OFF) position.


Connect the M.U.T.-III to the 16-pin diagnosis connector as follows.
note For details on how to use the M.U.T.-III, refer to the "M.U.T.-III operation manual."
1.Start up the personal computer.
2.Connect special tool V.C.I.-Lite USB cable (MB992747/MB992748) or M.U.T.-III USB cable (MB991827) to V.C.I.-Lite (MB992744) or V.C.I. (MB991824) and the personal computer.
3.Connect V.C.I.-Lite main harness A (MB992745) or M.U.T.-III main harness A (MB991910) to the V.C.I.-Lite or V.C.I.
4.Connect the V.C.I.-Lite main harness A or M.U.T.-III main harness A to the diagnosis connector of the vehicle.
note When the V.C.I.-Lite is connected to the diagnosis connector, the V.C.I.-Lite indicator lamp will be illuminated in a green colour.
5.Turn the V.C.I. power switch to the "ON" position. <When using the V.C.I.>
note When the V.C.I. is energised, the V.C.I. indicator lamp will be illuminated in a green colour.
6.Start the M.U.T.-III system on the personal computer and turn the ignition switch to the "ON" position.
7.Select "KOS/OSS/IMMO/Keyless" in the "System Select" screen. Select the model year and push the OK button (Check each model if there is an option). Select "Coding" on the next screen.

8.Select "Chassis No. /VIN Writing" on "Coding" screen.

9.Push the OK button after the Chassis No./VIN written in the engine-ECU is displayed.
10.Push the OK button after "Chassis No./VIN Writing will start. Are you sure?" is displayed.
11.Push the OK button after "Completed." is displayed.

12.Result of Chassis No./VIN writing is displayed.
13.Resister the other ID code. (Refer to GROUP 42B, Troubleshooting - ID Codes Registration Procedure.)

WHEN ETACS-ECU IS REPLACED

Chassis No./VIN registration steps for ETACS-ECU.
caution Before connecting or disconnecting the M.U.T.-III, turn the ignition switch to the "LOCK" (OFF) position.


Connect the M.U.T.-III to the 16-pin diagnosis connector as follows.
note For details on how to use the M.U.T.-III, refer to the "M.U.T.-III operation manual."
1.Start up the personal computer.
2.Connect special tool V.C.I.-Lite USB cable (MB992747/MB992748) or M.U.T.-III USB cable (MB991827) to V.C.I.-Lite (MB992744) or V.C.I. (MB991824) and the personal computer.
3.Connect V.C.I.-Lite main harness A (MB992745) or M.U.T.-III main harness A (MB991910) to the V.C.I.-Lite or V.C.I.
4.Connect the V.C.I.-Lite main harness A or M.U.T.-III main harness A to the diagnosis connector of the vehicle.
note When the V.C.I.-Lite is connected to the diagnosis connector, the V.C.I.-Lite indicator lamp will be illuminated in a green colour.
5.Turn the V.C.I. power switch to the "ON" position. <When using the V.C.I.>
note When the V.C.I. is energised, the V.C.I. indicator lamp will be illuminated in a green colour.
6.Start the M.U.T.-III system on the personal computer and turn the ignition switch to the "ON" position.
7.Select "ETACS" in the "System Select" screen. Select the model year and push the OK button (Check each model if there is an option).Select "Coding" on the next screen, and select "Chassis No./VIN Writing" on the further screen.

8.Enter the Chassis No./VIN of registering vehicle and push the OK button.
9.Push the OK button after "Chassis No./VIN Writing will start. Are you sure?" is displayed.
10.Return to the previous screen and "In Progress" is displayed at the lower-left corner on the screen.
11.Push the OK button after "Completed." is displayed.

12.Chassis No./VIN writing result is displayed.
13.Select "Chassis No./VIN Information" on the "Coding" screen after the Chassis No./VIN writing is completed, and check that the Chassis No./VIN is changed.
14.Resister the other ID code (Refer to GROUP 54A, Immobilizer system - On-vehicle Service ).