DTC B1161 VIN mismatch
caution
When DTC B1161 is set, be sure to diagnose the CAN bus line.
When replacing the ECU, always check that the communication circuit is normal.
DIAGNOSTIC FUNCTION
When the VIN registered in KOS&OSS-ECU is different from the VIN transmitted by ECM on the CAN bus line, KOS&OSS-ECU sets DTC B1161.
JUDGMENT CRITERIA
Check Conditions
When all the following conditions are met.
Power supply mode: ON
VIN written in KOS&OSS-ECU
Judgment Criterion
The VIN received via CAN communication is different from the VIN written in KOS&OSS-ECU.
PROBABLE CAUSES
Malfunction of the CAN bus line
Writing error of VIN to ECM (ECM has been interchanged between two vehicles, or VIN has not been written after ECM replacement)
Malfunction of KOS&OSS-ECU
DIAGNOSIS
1.
Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line
2.
Check of VIN in ECM
3.
KOS&OSS-ECU DTC recheck