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DIAGNOSIS TSB Revision KEYLESS OPERATION SYSTEM (KOS) 42B-59 DTC B2400: KOS key registration fail CAUTION • If the DTC B2400 is set, diagnose the CAN bus lines. • When replacing the ECU, always check that the communication circuit is normal. . DTC SET CONDITION If the registration of the keyless operation key ID to . TECHNICAL DESCRIPTION (COMMENT) Assuming that another keyless operation key has . TROUBLESHOOTING HINTS • Keyless operation key ID registration failure • Malfunction of the keyless operation key • Malfunction of CAN bus line • Battery drain of keyless operation key • Damaged wiring harness and connectors • Malfunction of receiver antenna module • Malfunction of KOS-ECU DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: Vehicles Communication Interface (V.C.I.) • MB991827: M.U.T.-III USB Cable • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system) ACA02752 IMMOBILIZER KEYLESS Receiver Antenna Module and KOS-ECU Circuit KEYLESS RECEIVER KOS-ECU TRANSPONDER KEY ID AB AC702145AB Connector: C-30, C-102 C-30 C-102 |