The smart key system is totally composed of a smart key modue, a power distribute mode, an external receiver and a smart key holder.
The SMK 2.5, the smartkey system which has not Fob holder, is embed with a Demodulator. so the two Immo coil lines are connected this SSB. Smart key units sends a certified signal to the ECM through this process and then takes the engine to start by receiving the permission signal of engine start.
During the Immobilizer authentication, If there is any wrong VIN(Vehicle Identification Number) or MIN(Model Identification Number) signal on the communication message, ECM sets DTC P1696.
Item
Detecting Condition
Possible Cause
Enable Conditions
IG ON
Faulty Smart key ECM
Detecting time
1 time
Threshold value
Wrong VIN(Vehicle Identification Number), MIN(Model Identification Number)
- No DTC P1676 but wrong VIN or MIN