P1676

General Description

1. The sequences of the PIN code storage are as follows.
(1) Input the PIN code into the scanner when key teaching process.
The scanner transmits the Encrypted Code to the ECM after converting the PIN code into Encrypted Code.
(2) When the ECM gets the first key learning command, it transmits the SMARTRA3 learnt command and Encrypted Code to the SMARTRA3
(3) If the SMARTRA3 statue is virgin/neutral, the SMARTRA3 stores Encrypted Code in EEPROM and transmits the success message of the Encrypted Code storage.
(If the SMARTRA3 is learnt, the SMARTRA3 compares Encrypted Code transmitted by the ECM with Encrypted Code stored in EEPROM and transmits the (in)correct Encrypted Code message to ECM)
(4) If the SMARTRA3 is learned normally or the Encrypted Code of the registered SMARTRA3 is same as the ECM, the ECM begins operation the Transponder Learning.
(5) If the learning of the first transponder, the ECM stores the Encrypted Code in its EEPROM and converts state into learnt state.
2. The SMARTRA3 learning :
(1) starts with EMS request of PIN from scanner through the key teaching procedure.
(2) is possible in case that the status of SMARTRA is "virgin" or "neutral ".
(3) In case that the SMARTRA3 is "learnt", the SMARTRA3 will transmits the information if PIN inputted from scanner is same as the PIN in SMARTRA3.
(4) is possible regardless of key status.
3. The sequence of the SMARTRA3 confirms are as follows.
(1) After communication with the SMARTRA3, the ECM transmits the random number with requirement of the TP ID information.
(2) The SMARTRA3 encrypts the random number and transmits the result(Encrypted Random Number) to the ECM with TP ID information.
(3) The ECM compares the result transmitted from the SMARTRA3 with the result calculated by ECM.
And If result are coincided with each other; the ECS concludes the valid confirmation of the SMARTRA3.

DTC Description

The ECM sets DTC P1676 if there's any fault in message from SMARTRA to ECU

DTC Detecting Condition





Diagnostic Circuit Diagram





Monitor Scantool Data

1. Check status
(1) IGN "ON" & Engine "OFF"
(2) Monitor the "ECM, KEY and Smartra Status" Parameter on the Scantool.

Specification :'LEARNT'





Fig1) This data show that 3 keys have been taught, ECU has been learnt, Key in key cylinder has been learnt and SMARTRA3 has been learnt
(3) Has the KEY status learnt ?





2. Check SMARTRA
(1) IGN "ON" & Engine "OFF"
(2) Neutralize SMARTRA with scantool.
(3) Neutralize ECM and Register transponder key by scantool.

NOTE:
Pin code is required to Neutralize SMARTRA & ECM and to Register transponder key

(1) Are Neutralizing and Registering Key completed normally ?






NOTE:
If the SMARTRA3 is only replaced using an existing key and ECM, after replacing the "virgin" or "neutral" SMARTRA3, reteaching is possible by key Learning mode of scanner. In this case, all existing key must be retaught.
If SMATRA3 is replaced to another one (used at other vehicle), it can only recycle its neutralized first before replacing.

Verification of Vehicle Repair

After a repair, it is essential to verify that the fault has been corrected.
1. Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode and then clear DTC
2. Operate the vehicle and monitor the DTC on the scantool
3. Are any DTCs present?