General Information: General Description
- The secret key code is programmed in memory of Smart Key ECM, PDM, FOB key
- The learned FOB Key identifiers are stored in Smart Key ECM and PDM memory.
- Corresponding PIN code is learned and memorized in the Engine ECM.
Communication between smart key ECM, integrated in IPM, and ECM has 2 phase that is IG ON and Engine ON.
After this first IG ON transition phase or starting phase, a communication between Smart Key ECM and Engine ECM takes place.
- IG ON Phase (FOB key or Fob Key in Fob holder)
- Communication between Smart key ECM, integrated in IPM, and ECM starts from wake-up signal from ECM.
- After receiving wake-up signal from ECM, Smart Key ECM, which is integrated in IPM, sends lock or unlock starting signal to ECM.
- Starting Phase (FOB key or FOB key in Fob Holder)
- In case driver tries to start engine although Engine ECM is locked status for starting at IG ON, Engine ECM should send re-authentication to Smart Key ECM. According to the results of re-authentication, it would be decided to start engine or not.
The Engine ECM controls the engine in a normal way for starting and running and starts communication with the Smart Key ECM, sending a PIN request to the Smart Key ECM and waiting for valid release message from it until the release time period has ended.
In case of Smart Key ECM immobilizer function is locked, the Smart Key ECM answer is the no release message. Engine ECM enters in the locked state, which causes the activation of the immobilization actions of the engine.
In case of Smart Key ECM immobilizer function state is released, the Smart Key ECM answer is the release message, including the information Smart Key ECM in learn mode and the PIN code.