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GENERAL INFORMATION TSB Revision KEYLESS OPERATION SYSTEM (KOS) 42B-5 Main components and functions Parts name Functional description KOS-ECU Controls KOS by using the following inputs/outputs and • Input from the unlock sensor and lock switch on each door, input from the push switch on the IG knob • Communications with ETACS-ECU, ECM or ASC-ECU and combination meter via CAN • Wire communication with the steering lock unit • Wireless communication with the keyless operation key via the receiver antenna module, receiver antenna assembly • Output to the outer tone alarm Steering lock (incorporates push switch The steering lock has two unlocking mechanisms; a mechanical Keyless operation key (incorporates • The keyless operation key receives signals sent from each interior/exterior transmitter antenna, certifies the keyless • If two or more keyless operation keys registered in KOS-ECU respond at the same time, their signals would *1 data, and the keyless operation keys respond in accordance with this priority. Lock switch Driver's door Locks all the doors when a driver carrying the keyless operation Front passenger's Unlock sensor Driver's door The unlock sensors incorporated in the driver’s front door Front passenger's The unlock sensors incorporated in the passenger's front door Trunk lid opener switch By pressing the trunk lid opener switch on the trunk lid while Exterior transmitter Driver's side Converts the data output from KOS-ECU via wire into a signal, − Door Entry Function .) Front passenger's |