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8710-01
2. IMMOBILIZER/REMOTE CONTROL KEY CODING
1) System Overview
While the communication between BCM/SKM and ECU is based on the CAN communication, the
communication between transponder and BCM/SKM is based on LF (Low frequency) and RF
(Radio frequency). When the ignition switch is turned to ON position, the BCM checks the verified
transponder according to the immobilizer verification procedure, if correct, allows the vehicle to
start the engine. The immobilizer indicator comes on during the communication and if the
verification is carried out successfully the indicator goes off.
If there is something wrong in the system, the indicator blinks.
2) System Layout
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