DTC U1199: VIN not programmed
caution
When DTC 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 DTC U1199 when no VIN is recorded in it.
TROUBLE JUDGMENT
SRS-ECU determines that the abnormality is present when no VIN is recorded in it.
TROUBLESHOOTING HINTS
VIN not programmed
Malfunction of the SRS-ECU
DIAGNOSIS
1.
Using scan tool (M.U.T.-IIISE), diagnose CAN bus line.
2.
Register the VIN and recheck the diagnostic trouble code.