KOS-ECU sets diagnosis code No. B1761 when no chassis number is recorded in it.
JUDGEMENT CRITERIA
KOS-ECU determines that the abnormality is present when no chassis number is recorded
in it.
PROBABLE CAUSES
Chassis No. not programmed
Malfunction of the KOS-ECU
DIAGNOSIS PROCEDURE
Register the chassis No. and recheck the diagnosis code.
Register chassis number in KOS-ECU [refer to GROUP 00 -
How to Perform
Chassis Number (Chassis No.) Writing ]
and recheck
if the diagnosis code is set.
(1)Turn the ignition switch from the LOCK (OFF) position to the ON position.
(2)Check if the diagnosis code is set.
Q.
Is the diagnosis code set?
Replace KIOS-ECU and register the ID codes (Refer to ).
Replace KIOS-ECU and register the ID codes (Refer to 
The diagnosis is complete.