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Key approval process
When turning the ignition switch to ON position, the power is supplied to BCM and ECU. ECU
communicate with the immobilizer key to check if it is valid crypto code. If it is valid, ECU start to
control the engine when turning the ignition switch to START position.
The system has 10 seconds of valid time-out period. If the engine does not start in this period,
the key approval process should be done again.
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