Circuit/System Testing

Key Card Malfunction

1. Ignition/Vehicle OFF, disconnect the K300 Near Field Communication Exterior Module.
2. Disconnect the K300 Near Field Communication Exterior Module and test for less then 2 Ω between ground circuit terminal 3 and ground
   • If greater than 2 Ω 
   1. Repair the open/high resistance in the circuit.
   • Go to next step: If less than 2 Ω 
3. Verify a test lamp illuminates between the B+ circuit terminal 2 and ground.
   • If the test lamp does not illuminate 
   1. Remove fuse F22DA at the X51A Instrument Panel Wiring Harness Junction Block and test for infinite resistance between the B+ circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
   2. Test B+ circuit for an open/high resistance
      • If an open/high resistance is found, repair the fault on the circuit
      • If an open/high resistance is not found, verify there is voltage present at fuse F22DA
   • Go to next step: If the test lamp illuminates 
4. Ignition/Vehicle OFF, disconnect the K183 UHF Short Range Low Energy Remote Control Access Transceiver.
5. Test for less than 2 ohms in the LIN circuit end to end between terminal 1 at the K300 Near Field Communication Exterior Module and terminal 1 at the K183 UHF Short Range Low Energy Remote Control Access Transceiver.
   • If greater than 2 Ω 

     Repair the open/high resistance in the circuit.

   • Go to next step: If less than 2 Ω 
6. Ignition ON/Vehicle in Service Mode, verify a test lamp illuminates between the B+ circuit terminal 20 of the K183 UHF Short Range Low Energy Remote Control Access Transceiver and ground.
   • If the test lamp does not illuminate 
   1. Remove fuse F22DA at the X51A Instrument Panel Wiring Harness Junction Block and test for infinite resistance between the B+ circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
   2. Test B+ circuit for an open/high resistance
      • If an open/high resistance is found, repair the fault on the circuit
      • If an open/high resistance is not found, verify there is voltage present at fuse F22DA
   • Go to next step: If the test lamp illuminates 
7. Test for less then 2 Ω between ground circuit terminal 18 at the K183 UHF Short Range Low Energy Remote Control Access Transceiver and ground.
   • If greater than 2 Ω 
   1. Repair the open/high resistance in the circuit.
   • Go to next step: If less than 2 Ω 
8. Attempt to learn a new Key Card to the vehicle.
   • If a new Key Card is unable to be learned to the vehicle 

     Replace the K300 Near Field Communication Exterior Module.

   • If a new Key Card is able to be learned to the vehicle but vehicle access is still prohibited 

     Replace the K183 UHF Short Range Low Energy Remote Control Access Transceiver.