Owner's Manual
Jeep Wrangler
UNLIMITED JL 11/11
Troubleshooting Guide
Symptom Possible Cause Remedy
1 System will not turn on Missing or blown fuse at 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 used in aftermarket headunit system
(refer to the corresponding wiring
diagram).
Ampliers gain control has not been
properly adjusted.
Refer to the corresponding system
diagram.
3 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˚.
4 One of the speakers has
no sound.
Disconnected pin or loose connection. Check all connections to the speaker,
loose pins, disconnected terminals etc..
5 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.
6 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 amplier
harness.