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What might seem to be a malfunction in your unit may
just be the result of slight misoperation or miswiring.
Before calling service, first check the following table
for possible problems.
SIRIUS source
?The power does not turn ON.01
✔The fuse has blown.
☞After checking for short circuits in the wires, replace the fuse with
one with the same rating.
✔No ACC position on vehicle ignition.02
☞Connect the same wire to the ignition as the battery wire.
✔The SIRIUS satellite radio tuner is not connected properly.55
☞Connect the SIRIUS satellite radio tuner directly to this unit.
?Nothing happens when the buttons are pressed.04
✔The computer chip in the unit is not functioning normally.
☞Press the Reset button on the controller unit (page 3).
?No sound can be heard, or the volume is low.58
✔The input/output wires or wiring harness are connected incorrectly.
☞Reconnect the input/output wires and/or the wiring harness
correctly. See the section on <Connecting Wires to Terminals>.
?No broadcast can be received2
✔The SIRIUS antenna is not connected.
☞Connect it properly.
✔No subscription is established.53
☞Subscribe to SIRIUS.
?No sound is heard even though the information concerning the
SIRIUS satellite radio tuner is displayed.67
✔The microcomputer does not function correctly.68
☞Press the Reset button of the controller unit.(Page 3)
✔The system is not connected properly.69
☞Connect the system properly. See <Connecting Wires to
Terminals>.
HD Radio source
?The power does not turn ON.01
✔The fuse has blown.
☞After checking for short circuits in the wires, replace the fuse with
one with the same rating.
✔No ACC position on vehicle ignition.02
☞Connect the same wire to the ignition as the battery wire.
?Nothing happens when the buttons are pressed.04
✔The computer chip in the unit is not functioning normally.
☞Press the Reset button on the controller unit (page 3).
?No sound can be heard, or the volume is low.
✔The input/output wires or wiring harness are connected incorrectly.
☞Reconnect the input/output wires and/or the wiring harness
correctly. See the section on <Connecting Wires to Terminals>.
✔The preset broadcast station is not transmitting in the mode that was
set with <Receive Mode>.
☞Please set <Receive Mode> to "Auto".
✔In digital AM broadcasting, receive mode switches between stereo
and monaural too often.
☞Receiving condition is bad or unstable. Stereo is chosen when
receiving condition is good, and it switches to monaural when the
condition becomes bad.
?Radio reception is poor.
✔The car antenna is not extended.
☞Pull the antenna out all the way.
✔The antenna control wire is not connected.
☞Connect the wire correctly, referring to the section on
<Connecting Wires to Terminals>.
Troubleshooting Guide
KCA-CM50_U.S 03.9.2 11:20 AM Page 17