HOW TO PERFORM CHASSIS NUMBER (CHASSIS NO.) WRITING FOR ENGINE-ECU, KOS-ECU AND ETACS-ECU



Follow the procedure below to register the Chassis No. of the ETACS-ECU and the Keyless Operation System (KOS).
Chassis No. is stored in the engine-ECU, ETACS-ECU, and the KOS-ECU. If the Chassis No. 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, ETACS-ECU, and the KOS-ECU are replaced, follow the procedure below to write the Chassis No.


note
  • Chassis number writing of the OSS ECU and ESL ECU 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. or the vehicle identification number is registered to the engine-ECU.

ENGINE KEY CODE AND CHASSIS NUMBER (CHASSIS NO.) REGISTRATION STEPS FOR THE ENGINE-ECU <VEHICLES WITHOUT KOS>


caution
  • Check that diagnosis code No.P0603 "EEPROM fail" is not stored. When diagnosis code No. P0603 "EEPROM fail" is stored, the engine-ECU cannot store engine key code and chassis No. even if the engine key code and chassis No. are registered. If this diagnosis code is stored, troubleshoot the engine-ECU and repair, and then register the engine key code and chassis No. 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 User’s Manual."
1.Ensure that the ignition switch is at the "LOCK" (OFF) position.
2.Start up the personal computer.
3.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.
4.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.
5.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.
6.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.
7.Start the M.U.T.-III system on the personal computer and turn the ignition switch to the "ON" position.
8.Select "KOS/IMMO/Keyless" 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.
10.

Select "ENG Key Code&Chassis No./VIN Reg." from the "Special Function" screen.
11.

Push the OK button after "Key Code Registration to Engine-ECU" is displayed.
12.Push the OK button after "Completed. Press the OK button and move to Chassis No./VIN writing function." is displayed.
13.

Enter the Chassis No./VIN of registering vehicle and push the OK button.
14.Push the OK button after "Chassis No./VIN Writing will start. Are you sure?" is displayed.
15.Return to the previous screen and "In Progress" is displayed at the lower-left corner on the screen.
16.Push the OK button after "Completed." is displayed.
17.

Chassis No./VIN writing result is displayed.
18.Complete the M.U.T.-III.
19.Disconnecting the M.U.T.-III is the reverse of the connecting sequence, making sure that the ignition switch is at the "LOCK" (OFF).
20.Push the OK button after "Completed." is displayed.
21.Terminate the M.U.T.-III.
22.Turn the ignition switch to the LOCK (OFF) position and then disconnect the M.U.T.-III.

CHASSIS NUMBER (CHASSIS NO.) REGISTRATION STEPS FOR THE ENGINE-ECU <VEHICLES WITH KOS>


caution
  • Check that diagnosis code No.P0603 "EEPROM fail" is not stored. When diagnosis code No. P0603 "EEPROM fail" is stored, the engine-ECU cannot store engine key code and chassis No. even if the engine key code and chassis No. are registered. If this diagnosis code is stored, troubleshoot the engine-ECU and repair, and then register the engine key code and chassis No. 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 "MPI/GDI/DIESEL" button from the "System Select" screen.
8.

Select "Coding" on the next screen.
9.

Select "Chassis No./VIN Writing" screen.
10.

Select whether the vehicle is equipped with immobiliser system or not.

11.

Enter the chassis number in the New Chassis No. frame. Confirm the number and press the OK button.
12.

Following the instruction on the screen, press the OK button to execute the chassis number writing.
13.

Push the OK button after "Completed." is displayed.
14.

On the writing result confirmation screen, check that the chassis number is written, and finish the registration.

CHASSIS NUMBER (CHASSIS NO.) REGISTRATION STEPS FOR THE ETACS-ECU <VEHICLES WITH KOS>


caution
  • Check that diagnosis code No.P0603 "EEPROM fail" is not stored. When diagnosis code No. P0603 "EEPROM fail" is stored, the engine-ECU cannot store engine key code and chassis No. even if the engine key code and chassis No. are registered. If this diagnosis code is stored, troubleshoot the engine-ECU and repair, and then register the engine key code and chassis No. 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 "MPI/GDI/DIESEL" button from the "System Select" screen.
8.

Select "Coding" on the next screen.
9.Select "Chassis No./VIN Writing" screen.
10.

Select whether the vehicle is equipped with immobiliser system or not.

11.

Enter the chassis number in the New Chassis No. frame. Confirm the number and press the OK button.
12.

Following the instruction on the screen, press the OK button to execute the chassis number writing.
13.

Push the OK button after "Completed." is displayed.
14.

On the writing result confirmation screen, check that the chassis number is written, and finish the registration.

CHASSIS NO. WRITING STEPS FOR ETACS-ECU AND KOS-ECU


caution
  • Before the chassis No. registration to ETACS-ECU, check that the chassis Nos. of engine-ECU and vehicle are matched.
  • Check that diagnosis code No. B2416 "ECU internal error" is not stored. When diagnosis code No. B2416 "ECU internal error" is stored, the ETACS-ECU and the KOS-ECU cannot store the Chassis No. even if the Chassis No. is written. If this diagnosis code is stored, troubleshoot the immobiliser system or the KOS-ECU and repair, and then write the Chassis No. to the ETACS-ECU or the KOS-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/IMMO/Keyless" button from the "System Select" screen. Then, select the applicable option code item and push the OK button.

8.Select "Coding" on the next screen.
9.

Select "Chassis No. /VIN Writing" on "Coding" screen.
10.

Push the OK button after the Chassis No./VIN written in the engine-ECU is displayed.
11.Push the OK button after "Chassis No./VIN Writing will start. Are you sure?" is displayed.
12.Push the OK button after "Completed." is displayed.
13.

Result of Chassis No./VIN writing is displayed.
14.Resister the other ID code. (Refer to GROUP 42A, On-vehicle service - ID Codes Registration Procedure <Vehicles without KOS>, GROUP 42B, On-vehicle service - ID Codes Registration Procedure <Vehicles with KOS> or GROUP 54A, On-vehicle service - ID Codes Registration Procedure <Vehicles without KOS>.)