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Optima/Magentis(MG) > 2010 > D 2.0 TCI-D > Immobilizer > Immobilizer >
P169A Immobilizer-SMARTRA Authentication Fail
P169A Immobilizer-SMARTRA Authentication Fail > General Information
Component Location
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 firtst 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 learnted 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 SMARTAR 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 encryptes 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.
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DTC Description
The PCM/ECM sets DTC P169A if authentication between PCM/ECM and SMARTRA has failed.
DTC Detecting Condition
Item Detecting Condition Possible Cause
DTC Strategy •
Enable Conditions • IG ON
• Virgin SMARTRA at Learnt EMS
• Neutral SMARTRA at Learnt EMS • Locking of SMARTRA
Threshold value
• Incorect the Authetication of EMS and SMARTRA
• Locking of SMARTRA
Detecting time •-
Diagnostic Circuit Diagram
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P169A Immobilizer-SMARTRA Authentication Fail > Scantool Diagnostics
Monitor GDS data
1. Connect GDS to Data Link Connector(DLC).
2. IG "ON" & Engine "OFF"
3. Monitor the "KEY STATUS", "SMARTRA STATUS" and "ECU STATUS' Parameter on the GDS.
Specification : 'LEARNT'
Fig.1) This data show that 3 keys have been taught, ECU has been learnt, the Key in key cylinder has been lea
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SMARTRA3 has been learnt.
4. Has the "SMARTRA STATUS' been learnt ?
▶ Keep "KEY ON" status for 1 hours to withdraw "Locked by Timer" status. Then register
transponder and go to "Verification of Vehicle Repair" procedure.
▶Go to 'Component Inspection" procedure.
P169A Immobilizer-SMARTRA Authentication Fail > Inspection/Repair > Component
Inspection
Component Inspection
1. Check SMARTRA
(1) IG "ON" & Engine "OFF"
(2) Neutralize Both "SMARTRA" and "ECM" and Register transponder key by GDS.
Pin code is required to Neutralize SMARTRA and to Register transponder key
(3) Are Neutralizing and Registering completed normally ?
▶ Perform all the key teaching procedure with GDS. (All the keys must be retaught) and
then, go to "Verification of Vehicle Repair" Procedure.
▶ Substitute with a known-good SMARTRA and Perform Key teaching procedure.
▶ If the problem is corrected, replace SMARTRA and then go to "Verification of Vehicle
Repair" procedure.
P169A Immobilizer-SMARTRA Authentication Fail > Verification of Vehicle Repair
Verification of Vehicle Repair
After a repair, it is essential to verify that the fault has been corrected.
1. Connect GDS and select "Diagnostic Trouble Codes(DTCs)" mode and then clear DTC
2. Operate the vehicle and monitor the DTC on the GDS.
3. Are any DTCs present?
▶Go to the applicable troubleshooting procedure
▶System is performing to specification at this time.
P169A Immobilizer-SMARTRA Authentication Fail > Circuit diagram
Schematic Circuit Diagram
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