REGISTRATION WHEN REPLACING OSS-ECU AND ELECTRIC STEERING LOCK


caution
  • When KOS-ECU is replaced, all the registrations that need to be performed at KOS-ECU replacement must be completed before the registration of OSS-ECU and electric steering lock.
  • Be sure to check that the diagnosis code No.B1157 OSS EEPROM error and No.B1155 ESL EEPROM error are not set. If the diagnosis code No.B1157 "OSS EEPROM error" and No.B1155 "ESL EEPROM error" are set, the chassis number cannot be stored in memory even when it is written. Therefore, when these diagnosis codes are set, be sure to carry out the troubleshooting first to repair the trouble, and then write the chassis number to OSS-ECU or electric steering lock.
When OSS-ECU or electric steering lock is replaced, the chassis number needs to be registered to the replaced ECU.

CHASSIS NUMBER REGISTRATION PROCEDURE


note Regardless of which of OSS-ECU or electric steering lock is replaced, the registration can be performed by executing the same menu selection. (Even when both OSS-ECU and electric steering lock were replaced as a set, they can be registered by performing the registration process only once.)
1.Replace the OSS-ECU or electric steering lock.
2.

Connect M.U.T.-III to the diagnosis connector.
3.From the system selection screen of M.U.T.-III, select "OSS".
4.From the OSS function menu screen, select "Coding".
5.

From the coding menu screen, select "Chassis No./VIN Writing."
6.



Following the instruction on the screen, press the OK button to execute the chassis number writing. (M.U.T. screen above indicates when OSS-ECU is replaced.)
7.

On the writing result confirmation screen, check that the chassis number is written, and finish the registration.
8.Operate the engine switch to turn OFF the power supply.
note After the M.U.T.-III has executed the chassis number writing, it will turn the engine switch on forcibly. Therefore, after completion, turn the engine switch off.
9.Set the driver’s door from open to close or from close to open.
10.Carrying the keyless operation key, perform the engine switch operation to turn the power from OFF to ON twice.
11.Check that the OSS-ECU diagnosis code (B1160, B1164, B1165, B1166 or U1199) is not set, and finish the registration.