9
key. Do not connect it directly to the high voltage sections of
the ignition circuit.
Car Radio Muting CRM
The car kit offers a feature that can mute the car radio automat-
ically during a conversation. The car radio muting feature is
based on a grounded line, so it means that in standby, the yel-
low wire (CRM) is not grounded and car radio works normally,
but during a call, line is grounded and car radio is muted.
Some radios have separate supplies for amplifiers and motors,
and another for memory backup purposes. Very often these
radios also have a secret code system, which activates itself if
a break in the memory supply is detected. Be careful when
installing the relay not to break the memory supply (usually
marked ACC or +MEM)..
Testing
Once installed, the equipment should be tested to ensure that it
is operating satisfactorily and that the position of the units does
not impair on the driver’s ability to control and operate the vehi-
cle in any way.
You can reset the car kit to the original settings, for example, to
change the default user of the car kit.
To reset the car kit: Detach the microphone cable from HFW-1
unit for less than 5 seconds. After the car kit has been reset,
the indicator light of the remote control button is shown for sev-
eral seconds.
Use the phone to make a call when the vehicle is parked with
the engine running. During the call, switch off the engine.
Ensure that the phone is operational with the engine running
and with the engine switched off.
For operating information refer to the CARK112 User’s Guide
or User’s Guide supplied with the phone.
VEHICLE
RADIO
yellow wire
CRM line
HFW–1
CRM line