P1691

DTC P1691 ANTENNA COIL ERROR

GENERAL DESCRIPTION
This wireless communication runs on RF. 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 an RF signal, which is transmitted, to the transponder by the antenna.

DTC DESCRIPTION
This DTC indicates that there is open or short in antenna coil circuit.

DTC Detecting Condition:

MONITOR SCANTOOL DATA
1. Ignition "ON" & Engine "OFF".
2. Connect Scan tool and clear the DTCs.
3. If the DTCs are retrieved again, monitor "CURRENT DATA" to check No. of Learnt key. ECM and KEY status.
4. Are both Key and ECM status learnt?

YES - Fault is intermittent caused by poor contact in the SMARTRA's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

NO - Go to "Terminal and connector Inspection" procedure.

COMPONENT INSPECTION
1. Check Antenna Coil
1. Ignition " OFF".
2. Disconnect SMARTRA connector.




3. Measure resistance between terminal 1 and 2 of the SMARTRA connector (Component side)

Specification : Approx. 8.5 Ohms

4. Is the measured resistance within specifications?

YES - Go to "Check SMARTRA" as below.

NO - Check for open in harness between SMARTRA and Antenna coil, repair or replace as necessary. Substitute with a known-good Antenna Coil and check for proper operation. If the problem is corrected, replace Antenna Coil. And then, go to "Verification of Vehicle Repair procedure.

2. Check SMARTRA
1. Ignition " ON" & Engine "OFF".
2. Perform neutral mode, key teaching/changing and password teaching according to description in "System inspection" procedure.

NOTE: Be sure that PIN code is prepared before performing neutral mode.

3. Is Key teaching completed?

YES - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair procedure.

NO - Substitute with a known-good SMARTRA and check for proper operation. If the problem is corrected, replace SMARTRA and Go to "Verification of Vehicle Repair procedure.

NOTE: In case of faulty SMARTRA, there are no special procedures required. A new SMARTRA device simply rep/aces the old one. (Them are no transponder-related data stored in this device.)

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and monitor CURRENT DATA to check No. of Learnt key, ECM and KEY status.
2. Select Diagnostic Trouble Codes(DTCs)" mode and Clear the DTCs.
3. Are any DTCs present?

YES - Go to the applicable troubleshooting procedure.

NO - System is performing to specification at this time.