Code No. B1160 Key code not programmed
Code No. U1199 Chassis No. not programmed
caution
When diagnosis code No.B1160, or U1199 is set, be sure to diagnose the CAN bus line.
Before replacing ECU, ensure that the communication circuit is normal.
DIAGNOSTIC FUNCTION
KOS&OSS-ECU sets diagnosis code No.B1160 when the key code is not written.
KOS&OSS-ECU sets diagnosis code No.U1199 when no Chassis No. is recorded in it.
note
When KOS&OSS-ECU is new, the diagnosis codes No.B1160 and No.U1199 are set simultaneously.
JUDGEMENT CRITERIA
Judgement Criterion
Chassis number or key code has the initial value (not written)
PROBABLE CAUSES
Malfunction of the CAN bus line
Chassis number not written
Key code not written
Malfunction of KOS&OSS-ECU
DIAGNOSIS PROCEDURE
1.
M.U.T.-III CAN bus diagnosis
2.
Chassis number registration