Code No. U1199: Chassis No. not programmed
caution
When diagnosis code No. U1199 is set, be sure to diagnose the CAN bus line.
When replacing the ECU, always check that the communication circuit is normal.
FUNCTION
SRS-ECU sets diagnosis code No. U1199 when no Chassis No. is recorded in it.
TROUBLE JUDGEMENT
SRS-ECU determines that the abnormality is present when no Chassis No. is recorded in it.
TROUBLESHOOTING HINTS
Chassis No. not programmed
Malfunction of the SRS-ECU
DIAGNOSIS PROCEDURE
1.
M.U.T.-III CAN bus diagnostics
2.
Register the Chassis No. and recheck the diagnosis code.