DESCRIPTION AND OPERATION Transponder Coil The transponder coil (C0049) mounted around the ignition barrel, and is connected to the engine immobilisation ECU (C0059) by KB and KG wires. Both connections between the immobilisation ECU and the transponder coil switch between both inputs and outputs. The transponder coil reads the vehicle identification information contained within the key transponder and relays it to the immobilisation ECU. The immobilisation ECU (C0059) then compares this information with the vehicle identification information received from the Central Control Unit (CCU) (C0429) on a G wire. Central Control Unit (CCU) The CCU (C0429) outputs a locking status signal to the immobilisation ECU (C0059) on a KN wire. If the vehicle has been superlocked or the anti-theft alarm system is armed, the immobilisation ECU issues a request for the CCU to remove both before it will allow the engine to be cranked. NOTE: When the CCU receives a 'remove superlock' signal from the immobilisation ECU, it will unlock the driver door. Superlocking will be removed from the remaining doors if single point entry is selected. For more information on superlocking and the anti-theft alarm system, refer to the Anti-theft Alarm and Central Door Locking (CDL) section of this manual. + ANTI-THEFT ALARM AND CENTRAL DOOR LOCKING (CDL). The CCU also outputs an ignition status signal, informing the immobilisation ECU when the ignition switch has been turned to the 'ignition' position. The CCU (C0428) transmits this signal to the immobilisation ECU (C0059) on an ON wire. Gearbox Solenoid (Automatic Vehicles Only) When the gear selector lever is in the Park (P) or Neutral (N) position, the gearbox solenoid (C0244) provides a feed to the immobilisation ECU (C0059) on a W wire. If the selector lever is moved to any other position, the feed is removed and the immobilisation ECU will not allow the engine to be cranked. Engine Control Module (ECM) If the correct re-mobilisation code is received from the remote handset, the immobilisation ECU (C0059) transmits a rolling code to the ECM (C0331 on Td4 vehicles, C0913 on K Series vehicles, C0371 on KV6 vehicles) on a YR wire. The ECM (C0603 on Td4 vehicles, C0913 on K Series vehicles, C0371 on KV6 vehicles) will now energise the main relay by providing an earth path for the relay coil (C0576) on a WK wire.
FREELANDER 02MY
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