General Information

Smart Key Code Saving
P1690 Immobilizer-Smartra No Response - General Information

Component Location





General Description

1. The secret key code is porgrammed in memory of Smart Key ECM, PDM, FOB key
2. The learnt FOB Key identifiers are stored in Smart Key ECM and PDM memory.
3. Corresponding PIN code is learnt and memorized in the Engine ECM
Communication between smart key ECM and ECM, has 2 phase that is IG ON and Engine ON.
After this first IG ON transition phase or starting phase, a commnication between Smart Key ECM and Engine ECM takes place.
IG ON Phase (FOB key or Fob Key in Fob holder)
1. Communication between Smart key ECM and ECM starts from wake-up signal from ECM.
2. After receiving wake-up signal from ECM, Smart Key ECM sends lock or unlock starting signal to ECM.
Starting Phase (FOB key or FOB key in Fob Holder)
1. 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 reauthentication, it would be decided to start engine or not.
The Engine ECM controls the engine, in a normal way for starting and running, and start scommunication with the Smart Key ECM, sending a PIN request to the Smart Key ECMand 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 imobilization actions of the engine.
In case of Smart Key ECM immobilizer function state is released, the Smart Key ECM answer is the release message, in cluding the information Smart Key ECM in learnt mode and the PIN code.

DTC Description

DTC P1690 is set Engine ECM has not received any signals related starting engine, Although Engine ECM sends wake up signal to Smart Key ECM.

DTC Detecting Condition





Diagnostic Circuit