When replacing the ECU, always check that the communication circuit is normal.
DIAGNOSTIC FUNCTION
If no keyless operation key ID is registered with KOS-ECU or if the keyless operation key with ID not registered is used, KOS-ECU stores DTC B2401.
TECHNICAL DESCRIPTION (COMMENT)
If the number of the registered keyless operation keys is 0, or the registration of a keyless operation key fails when the number of the registered keyless operation keys is 0, it is judged as abnormal.
TROUBLESHOOTING HINTS
The registration of a keyless operation key ID fails when no keyless operation key ID is registered.
Malfunction of the keyless operation key
Malfunction of KOS-ECU
DIAGNOSIS
1. Register the keyless operation key ID and recheck the diagnostic trouble code.
2. Replace the keyless operation key and recheck the diagnostic trouble code.
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