P1691

P1691

Component Location:

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

DTC Description
The ECM sets DTC P1691 if there's any fault in immobilizer antenna coil.

DTC Detecting Condition:

Schematic Diagram:

Monitor Scantool Data
1. Connect scantool to Data Link Connector (DLC).
2. IGN "ON" & Engine "OFF"
3. Monitor the "KEY STATUS", "SMARTRA STATUS" and "ECU STATUS" Parameter on the Scantool.

Specification : 'LEARNT'






4. Are "KEY STATUS", "SMARTRA STATUS" and "ECU STATUS" Parameter within specifications?

YES - 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 "Inspection & Repair" procedure

Component Inspection
1. Check coil antenna.
1. Ignition "OFF"
2. Disconnect SMARTRA.
3. Measure resistance between terminal "1" and "2" of SMARTRA.

Specification : Approx. 8.5 ohms






4. Is the measured resistance within specifications?

YES - Go to "Check SMARTRA" procedure

NO - Check for open or short in antenna coil. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

2. Check SMARTRA
1. IGN "ON" & Engine "OFF"
2. Neutralize "SMARTRA" and Register transponder key by scantool.

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

3. Are Neutralizing and Registering completed normally?

YES - Perform all the key teaching procedure with scantool. (All the keys must be retaught) and then, go to "Verification of Vehicle Repair" Procedure.

NOTE: * Never change the password after SMARTRA is neutralized with scantool Otherwise, Virgin TP only possible to register.

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

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.