Jeep Wrangler
UNLIMITED JK • 19/19
Troubleshooting Guide
Symptom
Possible Cause
Remedy
1
System will not turn on
Missing or blown fuse ar the battery
Insert or replace fuse
Radio's Remote Turn-On wire may be
disconnected.
Verify that Remote Turn-On wire is
connected.
2
Volume is too loud with
aftermarket headunit.
Speaker level out is connected at the
T-Harness.
Ensure that the low level RCA adapters are
use in aftermarket headunit system (refer to
the corresponding wiring diagram).
Amplifiers gain control has not been
properly adjusted.
Refer to the corresponding system diagram.
4
Subwoofer sounds very
low.
Gain level may be down to the lowest
setting.
Adjust level to reccommended setting (refer
to the corresponding wiring diagram).
Audio Phase may be reversed.
Ensure that the PHASE is set to 0˚.
5
One of the speakers has
no sound.
Disconnected pin or loose connection. Check all connections to the speaker, loose
pins, disconnected terminals etc..
6
Airbag light is on
Failed to disconnect the battery while
working on the vehicle.
Disconnect the battery and re-connect after
5 minutes. If problem is not solved, the
vehicle will have to be taken to a Jeep
dealer.
7
System turns on only on
radio source
Aftermarket Power Antenna wire is
connected to amp
Connect the Remote Turn-On wire
(Blue/White) to the Blue wire on the
amplifier harness.
