Kia Forte: Audio / Antenna

Kia Forte 2019-2021 (BD) Service Manual / Body Electrical System / Audio / Antenna

Components and components location

1. Audio head unit
2. Glass antenna
3. Roof antenna
4. Antenna feeder cable

Repair procedures

Glass Antenna Amplifier


Remove right rear pilar trim.

(Refer to Body - "Rear Pilar Trim")


Loosen the bolt and then remove glass antenna amplifier (A) after disconnecting the connector.

Roof Antenna


Disconnect the negative (-) battery terminal.


Remove the roof trim assembly.

(Refer to Body - "Roof Trim Assembly")


Disconnect the connector (A, B) from antenna.


Remove the roof antenna (B) after loosening the nut (A).


Install in the reverse order of removal.


Glass Antenna

Glass Antenna Circuit Inspection

Remove the right rear pilar trim glass antenna, and then disconnect the power wiring from the amplifier.


Turn the radio ON.

Measure the voltage between terminal 2 of the harness antenna feeder cable (A) and body ground (B).

OK : approximately 12V (ACC+)

Antenna Grid Line Inspection

Wrap aluminum foil (A) around the tip of the tester probe (B) as shown.


Touch one tester probe to the glass antenna terminal (A) and move the other tester probe along the antenna wires to check that continuity exists.

Glass Antenna Grid Line Repair

To make an effective repair, the broken section must be no longer than one inch.


Lightly rub the area around the broken section (A) with fine steel wool, and then clean it with alcohol.


Carefully mask above and below the broken portion of the glass antenna wire (B) with cellophane tape (C).


Using a small brush, apply a heavy coat of silver conductive paint (A) extending about 1/8″on both sides of the break. Allow 30 minutes to dry.


Thoroughly mix the paint before use.


Check for continuity in the repaired wire.


Apply a second coat of paint in the same way. Let it dry three hours before removing the tape.

Antenna Cable

Check for continuity between the center poles of antenna cable.


Check for continuity between the outer poles of antenna cable. There should be continuity.


If there is no continuity, replace the antenna cable.


Check for continuity between the center pole (A) of antenna cable and terminal of glass antenna (B). There should be continuity.


If there is continuity, replace the antenna cable.

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