Circuit/System Testing

Active Antenna (U77)

1. Ignition OFF, disconnect the radio antenna coax cable from the A11 radio and from the K46 radio antenna module.
2. Verify the antenna coax cable passes the coax cable component test. Refer to Component Testing .
   • If the coax cable does not pass the test 

     Replace the antenna coax cable

   • If the coax cable passes the test 
3. Connect the antenna coax cable to the A11 radio. Ignition ON, A11 radio ON.
4. Verify a test lamp illuminates between the antenna coax cable center terminal and ground at the K46 radio antenna module connector.
   • If the test lamp does not illuminate 

     Replace the A11 radio.

   • If the test lamp illuminates 
5. Test or replace the K46 radio antenna module.

Spoiler Antenna (UB3)

1. Ignition OFF, disconnect the radio antenna coax cable from the A11 radio and the K46 radio antenna module.
2. Verify the antenna coax cable passes the coax cable component test. Refer to Component Testing .
   • If the coax cable does not pass the test 

     Replace the antenna coax cable

   • If the coax cable passes the test 
3. Disconnect the harness connector at the K46 radio antenna module. Ignition ON, A11 radio ON.
4. Verify a test lamp illuminates between the control circuit terminal A and ground.
   • If the test lamp does not illuminate 
   1. Vehicle OFF. Disconnect the X1 harness at the A11 radio.
   2. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the A11 radio.
   • If the test lamp illuminates 
5. Test or replace the K46 radio antenna module.