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Troubleshooting Guide
General
? 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 unit (page 4)..
? The monitor does not open/close.KVT
✔ The unit is not connected to the parking brake detection
switch.
☞ Make proper connections according to <Connection>
(See page 40).
✔ The parking brake is not engaged.
☞ For safety reasons, the monitor does not open while the
vehicle is moving. Engaging the parking brake.
? The screen is dark.KVT
✔ The unit is in a location where temperature is low.
☞ If the temperature of the monitor unit drops, the screen
may appear darker when power is first turned on due to
the characteristics of a liquid crystal panel. Wait a while
after turning power on for the temperature to rise.
Normal brightness will return.
? Nothing happens when the buttons are pressed.04
✔ The computer chip in the unit is not functioning normally.
☞ Press the reset button on the unit (page 4).
? The memory is erased when the ignition is turned OFF.10
✔ The battery wire has not been connected to the proper
terminal.
☞ Connect the wire correctly, referring to the section on
<Connection>.
✔ The ignition and battery wire are incorrectly connected.11
☞ Connect the wire correctly, referring to the section on
<Connection>.
? There’s no loudness effect.12
✔ You’re using Non-fading preout.
☞ Loudness has no effect in Non-fading preout.
? The TEL mute function does not work.15
✔ The TEL mute wire is not connected properly.
☞ Connect the wire correctly, referring to the section on
<Connection>.
? The TEL mute function turns ON even though the TEL mute
wire is not connected.16
✔ The TEL mute wire is touching a metal part of the car.
☞ Pull the TEL mute wire away from the metal part of the
car.
? Even if Loudness is turned ON, high-pitched tone isn't
compensated for. 17
✔ Tuner source is selected.
☞ High-pitched tone isn't compensated for when in Tuner
source.
? No sound can be heard, or the volume is low.
✔ The fader or balance settings are set all the way to one
side.21
☞ Center the fader and balance settings.
✔ The input/output wires or wiring harness are connected
incorrectly.22
☞ Reconnect the input/output wires or the wiring harness
correctly. See the section on <Connection>.
✔ The values of Volume offset are low.24
☞ Increase the values of Volume offset. (page 15)
? The sound quality is poor or distorted.25
✔ One of the speaker wires is being pinched by a screw in the
car.
☞ Check the speaker wiring. 6
✔ The speakers are not wired correctly.27
☞ Reconnect the speaker wires so that each output
terminal is connected to a different speaker.
? Non-fading output, Non-fading Low Pass Filter and Non-
fading setting can’t be done.28
✔ The <Non-fading output> (page18) is OFF.29
☞ Turn it ON.
The <Dual zone system> (page 15) is ON.30
☞ Turn it OFF.
? There’s no Front High Pass Filter and Rear High Pass Filter
effect.31
✔ The Non-fading preout is being used.
☞ There’s no effect in Non-fading preout.
? The Security Code item isn’t displayed in the Menu
System.32
✔ The Security Code function is already activated.
☞ When the Security Code function is activated it isn’t
displayed in the menu items.
? The Touch Sensor Tone doesn’t sound.34
✔ The preout jack is being used.
☞ The Touch Sensor Tone can’t be output from the preout
jack.
? Even though Synchronize Clock is ON, the clock can’t be
adjusted.35
✔ The received RDS station isn’t sending time data.
☞ Receive another RDS station.
Tuner source
? Radio reception is poor.39
✔ The car antenna is not extended.
☞ Pull the antenna out all the way.
✔ The antenna control wire is not connected.40
☞ Connect the wire correctly, referring to the section on
<Connection>.
? The desired frequency can’t be entered with the Direct
Access Tuning.41
✔ A station that can’t be received is being entered.
☞ Enter a station that can be received.
✔ You’re trying to enter a frequency with a 0.01 MHz unit.42
☞ What can be designated in the FM band is to 0.1 MHz.
? It isn't the set Traffic information sound volume. 43
✔ The set sound volume is less than the tuner sound volume.
☞ If the tuner sound volume is louder than the set sound
volume,the tuner sound volume is used.
What might appear 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.
