STEP 1. Check the state of the fin antenna.
STEP 2. Check to see if inspections are taking place is an area exposed to special electric fields.
STEP 3. Move the vehicle and check the radio.
STEP 4. Check if there is any damage to the fin antenna and antenna feeder.
STEP 5. Check the connection of the antenna feeder’s plug and radio and CD player.
STEP 6. Check of short or open circuit in ANT+ line between radio and CD player connector and antenna amplifier connector
STEP 7. Substitute a known good radio and CD player, and check the trouble symptom.
Is the check result normal?
Replace the radio and CD player. Either repair or replace the shark fin antenna base (fin antenna).