Radio Frequency
Speaker Check
[“OFF”, Black] after check
[“ON”, Light Blue] under check

No

4. How to check STARLINK Connectivity ID Number and
Software Version Information
4-1. Enter the Service Menu
Procedure:
1) Turn the ignition switch to ACC
2) Press the button (b) 5 times with the button (c) pressed.

3) “Service Menu” is displayed
STARLINK Connectivity ID Number:
Touch “Product Information” to display
the Connectivity ID (16 digits)
Software Version Information:
1. Touch “Service Information”
2. Touch “Version Information”
3. Touch “Push” next to AVN or DA
4-2. Exit the Service Menu
Pressing the button (c) for 3 seconds or more, or turning the ignition switch from
the ACC to OFF position can exit the diagnostic mode.
30

2. Troubleshooting
NO POWER
Condition: No Audio, No Display, No Illumination in all modes.

Check connector (A) at
the rear of the head unit.

Is connector (A) securely
connected?
Are all wires connected to
the connector?

No

Connect securely.
Repair broken wire or
replace the wire harness.

Yes
Is ACC and BU voltage 12
Volts or the same as the
vehicle voltage?

No

Check the fuse, the condition of connector pins
and ground wiring.
Repair or replace if
necessary.

Yes
Does the head unit turn
ON when ACC turns ON?

No
Replace the Head Unit.

Yes

Re-check for original
condition.

31

Re-check for
original condition.

2. Troubleshooting
NO SOUND (All modes) with Internal Amp
Condition: Absolutely no sound on all modes

No sound for all audio
sources or modes

Is the VOLUME set to a
audible level?

No

Turn up VOLUME and
re-check for original
condition.

Yes
Check resistance of all
speakers for opens or
shorts to ground.
Are any physical damage,
shorted or grounded
conditions found?

Replace or repair it and
re-check for original
condition.
Yes

Note:
If a speaker or wire harness is
shorted or grounded, the head
unit will shut off the audio output
due to circuit protection.

No
Replace the head unit.

32

2. Troubleshooting
NO SOUND (All modes) With External Amp
Condition: Absolutely no sound on all modes.
Check the B+ and ACC at the
amp. Is power present?

No
Repair or replace fuses.
Replace the head unit.

Yes
Check the Mute Line from the
head unit to the amplifier. With
No
Audio playing the voltage at
the amp should be above 3.5
Volts.
Is the Mute line above
3.5Volts?

No
Inspect the mute line
circuit for shorts to
ground.
Are any shorts to
ground found?

Yes

Repair or replace harness.

Yes

No
Disconnect the amp and
test the mute line again.
Is the Mute line above
3.5 volts?

Yes

Yes
Check speaker line at the amp
for any shorts to ground.
Any shorts to ground?

Remove ground short.

No
Check across the speakers to
see if there are any shorted
speakers. Any shorted
speakers?

Yes
Repair or replace the speaker.

No
Disconnect the head unit and
the amp. Test the Audio lines
from the head unit to the amp
for any opens or shorts to
ground.
Any opens or shorts found?

Yes
Repair or replace the harness.

No
Check for 2.5Volts on the IEBus communication line out of
the head unit.

Yes
Replace the audio amp.

Is there 2.5 Volts on the TX+
and TX- lines?

Replace the head unit.
No
33

Replace the audio amp.

2. Troubleshooting
NO SOUND (AM/FM)
Condition: No sound on Radio mode (AM/FM)

No sound for AM/FM.

Is the VOLUME set to a
audible level?

No

Turn up the VOLUME
and recheck for original
condition.

Yes

Check if Antenna jack is
securely connected to
the head unit.

Yes

Radio sound came
back?

The problem was
solved.

No
Remove antenna jack
from the head unit and
connect a known good
external test antenna.
Is the radio sound
restored?

Check ANT+B voltage
from the head unit.
Yes

Check antenna system.

(A - 10P connector, #8 pin
voltage is 12V )

Is ANT+B voltage within
specification?

No
No
Replace the head unit.
Replace the head unit.

34

Yes

Ex) Roof antenna
Antenna AMP
Antenna wire harness

2. Troubleshooting
VOLUME FADES UP AND DOWN (FM/AM HD* RADIO)
Condition: A noticeable drop in audio level is heard when listening to AM/FM radio.
Audio level is fading
up and down on AM/
FM.

Is the orange HD logo
being displayed on the
AM/FM screen?

No

The radio is in Analog
mode and the vehicle is
moving out of the radio
station coverage area.

Move to a location
closer to the broadcasting
radio station, and check for
original condition.

Yes
Press the settings icon
on the top of the
AM/FM screen, and turn
off the HD radio.
Yes
Was the problem
solved?

The problem was
solved. The vehicle
was traveling out of HD
coverage area and the
unit was changing from
HD to analog. This
causes a change in
Audio.

No
Move to a location
closer to the
broadcasting radio
station, and check for
original condition.

*Not available for Canadian model

35

2. Troubleshooting
NO SOUND (SAT RADIO)
Condition: No sound on SAT radio
No sound for SAT (Satellite)
radio.

Check surroundings:
Is the vehicle in an
environment where the signal
is difficult to receive?

Yes

Move the vehicle to a
location open to the sky
and check it again.

No
Change to other modes (AM/
FM/CD) and then select a XM
mode again. Did the SAT radio
sound come back?

Yes

The problem was solved.

No
SAT radio is a paid service.
Did the customer’s
subscription expire? Or, did
the free subscription expire?

Yes

Contact Satellite Radio
company and check
subscription status.
Renew as needed.
Note:
1. “UART” and “CAN” are not
shown for 86271FJ630/730
and 86201FJ660/760
2. “GPS” will indicate “NG” on
non-Navigation equipped Infotainment systems

No
Check if Antenna jack is
securely connected to the
head unit.
And check the connectivity in
diagnostic mode.
Is the SAT radio sound
restored?

The problem was
solved.
Yes

No
Check SAT power supply
voltage from the head unit.

Yes

Disconnect SAT antenna connector from the
head unit and connect a
known good test
external SAT antenna.

Check antenna system
(Antenna wire harness,
Roof antenna, etc.)

Is the SAT radio sound
restored?

(1P connector G, output 5V )

Is voltage within specification?

Yes

Replace the head unit.
No

No

36

2. Troubleshooting
NO SOUND (USB)
Note:
1. “UART” and “CAN” are not
shown for 86271FJ630/730
and 86201FJ660/760
2. “GPS” will indicate “NG” on
non-Navigation equipped Infotainment systems

Condition: No sound on USB
No sound for USB.

Does the USB flash memory
have MP3/WMA/AAC files?

No

The head unit will only
playback MP3/WMA/
AAC files in USB
mode.

Yes
Check the USB connectivity in diagnostic
mode.
Does the indicator
display "OK"?

Re-connect the vehicle USB port.
Does the diagnostic mode
display "OK"?

No

No

Yes
Yes

If the USB flash memory has an
LED indicator, does this indicator
lamp light up when it is connected
to the head unit?

Switch to USB mode
and re-check for
original problem.

No
Use a known good
USB flash memory
containing MP3/WMA/
AAC files.
Does the head unit
play the files?

Yes
Yes

Original USB flash
memory could be
defective.
Replace the vehicle USB port with
a known-good one and re-check
original problem.
Does the same issue occur?

No

Replace the head unit.

Yes

No
The vehicle USB port
is defective and
needs to be replaced.

37

2. Troubleshooting
NO SOUND (CD)
Condition: No sound on CD
No sound for CD.

Does the head unit
accept and eject CD
correctly?

No

Is there any foreign object
(ex. label) in the CD slot?

Yes

Yes

Is the head unit installed
property?

Yes

No

Insert and playback a
known-good,
commercially available
CD. Does the CD play?

Replace the head unit.

No

Yes

Is CD-R/RW being
used?

Remove foreign object.

Are CDDA/MP3/WMA/
AAC files recorded to CD
-R/RW?
Yes

Yes

Check to make sure
that the original CD is
not excessively
scratched or warped
and re-check for
original condition.

No
Replace the head unit.

38

No

No

Re-install the head unit
properly and re-check
for original condition.

The head unit cannot
playback files other
than CDDA/MP3/WMA/
AAC.
Re-check for original
condition with a CD-R/
RW containing the
supported media files.

2. Troubleshooting
NO SOUND (AUX)
Condition: No sound on AUX
Note:
1. “UART” and “CAN” are not
shown for 86271FJ630/730
and 86201FJ660/760
2. “GPS” will indicate “NG” on
non-Navigation equipped Infotainment systems

No sound for AUX

Yes
Check the AUX connectivity in
diagnostic mode.
Does the indicator display
"OK"?

No

Check connection of
the cable (plug) to the
head unit.

Yes
Check the volume on the device connected.
Is the volume on the device
minimum?

Adjust the volume on
the device.
Yes

No
Check the volume on the head
unit.