2012 Jeep Wrangler JK Factory Service Manual 29 - Non-DTC Diagnostics

Audio/Video

POOR OR NO AM/FM AUDIO RECEPTION

POOR OR NO AM/FM AUDIO RECEPTION

Special Tools: Click to display a list of tools used in this procedure

For a complete wiring diagram, refer to the Wiring Information.



Possible Causes

ANTENNA CONNECTION
OPEN OR SHORTED ANTENNA CABLE
ANTENNA
RADIO

1. CHECK THE ANTENNA CONNECTION


1. Turn the ignition off.
2. Disconnect the Radio C4 harness connector.
3. Inspect the Audio Antenna harness connection.


Is the Antenna connection clean and secure?

Yes


No


2. RADIO


1. Connect the Antenna 9977-6-FM to the Radio C4 component connector.
2. Place the test antenna base on the roof of the vehicle.
3. Turn the ignition on.
4. Drive the vehicle outside to an un-obstructed area.
5. Turn the Radio on and select several different known good stations from the AM and FM bands.


Is the audio reception still poor or not available?

Yes


No


3. ANTENNA


1. Turn the ignition off.
2. Reconnect the Radio C4 harness connector.
3. Disconnect the Radio Antenna harness connector.
4. Connect the Antenna 9977-6-FM to the Radio Antenna harness connector.
5. Turn the Radio on and select several different known good stations from the AM and FM bands.


Is the audio reception still poor or not available?

Yes


No


4. ANTENNA CABLE



1. Turn the ignition off.
2. Disconnect the Antenna 9977-6-FM from the Radio Antenna harness connector.
3. Connect the appropriate Jumper 9977-6-4 (1) or Jumper 9977-6-2 (1) to the Radio Antenna harness connector (2) at the Antenna.

4. Disconnect the Radio C4 harness connector.
5. Connect the appropriate Adapter 9977-6-1 (1) or Adapter 9977-6-3 (1) to the Radio C4 harness connector (2).
6. Measure the resistance across the tool terminals.


Is the resistance between 47.5 and 52.5 Ohms?

Yes


No

POOR OR NO SATELLITE AUDIO RECEPTION

POOR OR NO SATELLITE AUDIO RECEPTION

Special Tools: Click to display a list of tools used in this procedure

For a complete wiring diagram, refer to the Wiring Information.



Possible Causes

SATELLITE AUDIO ANTENNA CONNECTION
OPEN OR SHORTED SATELLITE AUDIO ANTENNA
SATELLITE AUDIO ANTENNA
RADIO

1. CHECK THE ANTENNA CONNECTION


1. Turn the ignition off.
2. Disconnect the Radio C7 harness connector.
3. Inspect the Satellite Audio Antenna harness connection.


Is the Antenna connection clean and secure?

Yes


No


2. RADIO



1. Connect the Antenna 9977-6-SAT (1) to the Radio C7 component connector.
2. Place the test antenna base on the roof of the vehicle.
3. Turn the ignition on.
4. Drive the vehicle outside to an un-obstructed area.
5. Turn the Satellite Radio on and select several different known good stations.


Is the reception still poor or not available?

Yes


No


3. ANTENNA



1. Turn the ignition off.
2. Reconnect the Radio C7 harness connector.
3. Disconnect the Satellite Audio Antenna harness connector.
4. Connect the Antenna 9977-6-SAT (1) to the Satellite Audio Antenna harness connector (2).
5. Turn the Satellite Radio on and select several different known good stations.


Is the reception still poor or not available?

Yes


No


4. ANTENNA CABLE



1. Turn the ignition off.
2. Disconnect the Antenna 9977-6-SAT from the Satellite Audio Antenna harness connector.
3. Connect the appropriate Jumper 9977-6-4 (1) or Jumper 9977-6-2 (1) to the Satellite Audio Antenna harness connector (2) at the Antenna.

4. Connect the appropriate Adapter 9977-6-1 (1) or Adapter 9977-6-3 (1) to the Radio C7 harness connector (2).
5. Measure the resistance across the tool terminals.


Is the resistance between 47.5 and 52.5 Ohms?

Yes


No