1. Touch one tester probe to the window near antenna terminal (A) here, and move the other tester probe along the antenna wires to check that continuity exists. Repair if continuity does not exist.

1. Remove the navigation unit. Check that the antenna lead connection.

Is it connected properly?

YES | - | Go to Step 6 .
NO | - | Reconnect the connector, and recheck the function.■

1. Disconnect the antenna cable 1P connectors from the window antenna.

1. Remove the audio unit.