If the diagnosis
code No. U1109 is set, diagnose the CAN bus lines.
When replacing the ECU, always check that the SRS circuit is normal.
FUNCTION
If the registered chassis number is different from that transmitted on the CAN bus lines,
the SRS-ECU will set diagnosis code No. U119A.
TROUBLE JUDGEMENT
If the chassis number stored in the SRS-ECU does not comply with that transmitted in CAN
bus lines, the SRS-ECU determines that a problem has occurred.
TROUBLESHOOTING HINTS
Chassis number not written
Malfunction of CAN bus line
Malfunction of Engine-ECU
Malfunction of SRS-ECU
DIAGNOSIS PROCEDURE
1.M.U.T.-III CAN bus diagnostics
2.Check the M.U.T.-III Diagnosis code for other systems