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PCM (Power Train Control Module)

WARNING: This page is about a different car, the 2018 Kia Cadenza. However, it is still accessible from the selected car via links, so may be relevant.
  1. The PCM (ECM) (A) checks on the ignition key using a special encryption algorithm, which is programmed into the transponder as well as the PCM (ECM) simultaneously. Only if the keys match, the engine can be started. The data of all transponders valid for the vehicle, are stored in the PCM (ECM).

    ERN (Encrypted Random Number) value between EMS and encrypted SMARTRA unit is checked and the validity of coded key is decided by EMS.

Fig 1: Locating Power Train Control Module
G12298472Courtesy of KIA MOTORS AMERICA, INC.
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