When replacing the ECU, always check that the communication circuit is normal.
DIAGNOSTIC FUNCTION
When the VIN registered in OSS-ECU is different from the VIN transmitted by engine control module on the CAN bus line, OSS-ECU stores DTC B1161.
DTC SET CONDITION
Check Conditions
When all the following conditions are met.
Power supply mode: ON
VIN written in OSS-ECU
Judgment Criterion
The VIN received via CAN communication is different from the VIN written in OSS-ECU.
TROUBLESHOOTING HINTS
Malfunction of the CAN bus line
Writing error of VIN to engine control module (engine control module has been interchanged between two vehicles, or VIN has not been written after engine control module replacement)
Malfunction of OSS-ECU
DIAGNOSIS
1. Using scan tool (M.U.T.-III), diagnose the CAN bus line.
2. Check the VIN registered in the engine control module and the VIN of the vehicle.