DTC : B1640

DTC B1640  : RF1 antenna not connected or malfunction

DTC (Keyless Access Control Unit)

NOTE:  If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Go to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .

1. Problem verification

   - 1. Clear the DTCs with the HDS.

   Clear DTCs

   - 2. Push the door outer handle door lock button to lock the door.

   - 3. Touch the door outer handle touch sensor to unlock the door.

   - 4. Check for DTCs with the HDS.

   DTC Description	DTC
   B1640 RF1 antenna not connected or malfunction

   Is DTC B1640 indicated?

   YES 

   Replace the Keyless Access/TPMS Control Unit - Removal and Installation .

   NO 

   Intermittent failure, the system is OK at this time. Check for loose or poor connections.