DTC B1161 VIN mismatch
caution
When the diagnostic trouble code No.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 OSS-ECU is different from the VIN transmitted by ECM on the CAN bus line, OSS-ECU sets the 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 ECM (ECM has been interchanged between two vehicles, or VIN has not been written after ECM replacement)
Malfunction of OSS-ECU
DIAGNOSIS
1.
Using scan tool MB991958, diagnose the CAN bus line.
2.
Check of VIN in ECM
3.
OSS-ECU DTC recheck