When diagnosis
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 chassis number registered in KOS&OSS-ECU is different from the chassis
number transmitted by engine-ECU on the CAN bus line, KOS&OSS-ECU sets diagnosis code
No.B1161.
JUDGEMENT CRITERIA
Check Conditions
When all the following conditions are met.
Power supply mode: "ON"
Chassis number written in KOS&OSS-ECU
Judgement Criterion
The chassis number received via CAN communication is different from the chassis number
written in KOS&OSS-ECU.
PROBABLE CAUSES
Malfunction of the CAN bus line
Writing error of chassis number to engine-ECU (engine-ECU has been interchanged
between two vehicles, or chassis number has not been written after engine-ECU replacement)
Malfunction of KOS&OSS-ECU
DIAGNOSIS PROCEDURE
1.M.U.T.-III CAN bus diagnosis 2.Check of chassis number in engine-ECU 3.KOS&OSS-ECU diagnosis code recheck