If Connection Between NAVI Control Unit and GPS Antennas Malfunctioning

Check cable for GPS antenna by watching out to see that cable is malfunctioning.

OK or NG 

1. OK : GO TO 2.
2. NG : Replace GPS antenna.

Replace other functional GPS antenna to try self-diagnosis again.

Result of self-diagnosis; Found same result? 

1. YES : Replace NAVI control unit.
2. NO : Replace GPS antenna.