Component Location
General Description
The SMARTRA carries out the communication with the built-in transponder of the ignition key. This wireless communication runs by RF (Radio frequency of 125 kHz). The SMARTRA is mounted at the ignition lock close to the antenna coil for RF transmission and receiving.
The RF signal from the transponder received by the antenna coil is converted into messages for serial communication by the SMARTRA device. And the received messages from the EMS are converted into the RF signal, which is transmitted, to the transponder by antenna.
General Description
The SMATRA executes the encryption algorithm and transmits the encryption result. And SMARTRA is in charge of relaying from EMS to Transponder.
The SMARTRA is teached in key Learning process and stores the PIN in memory inside SMARTRA. This PIN is used in encryption algorithm between EMS and SMARTRA and to neutralize the SMARTRA. When SMARTRA is neutral, old PIN and SEK are deleted.
New PIN can be stored in Neutral SMARTRA.
DTC Description
The PCM/ECM sets DTC P169A if authentication between PCM/ECM and SMARTRA has been failed .
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | | ? Locking of SMARTRA |
Enable Conditions | ? IG ON |
Threshold value | ? Virgin SMARTRA at Learnt EMS ? Neutral SMARTRA at Learnt EMS ? Incorect the Authetication of EMS and SMARTRA ? Locking of SMARTRA |
Detecting time | |