When DTC B1A24 is set, be sure to diagnose the CAN bus line.
When replacing the ECU, always check that the communication circuit is normal.
DIAGNOSTIC FUNCTION
KOS-ECU stores DTC B1A24 when the key ID was not registered in it.
TECHNICAL DESCRIPTION (COMMENT)
KOS-ECU determines that the abnormality is present, if the key ID is not registered in it when the power supply mode of the engine switch is turned ON.
TROUBLESHOOTING HINTS
Malfunction of CAN bus line
Key ID not registered
Malfunction of KOS-ECU
DIAGNOSIS
1. Using scan tool (M.U.T.-III), diagnose the CAN bus line.
2. Register the key ID and recheck the diagnostic trouble code.
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