reset BMW 3 SERIES 2002 E46 New Generation Radios Manual

6
NG Radios
Reset and Voltage Monitoring
A radio reset is triggered by under voltage or the internal processor monitor. The reset
function restarts the radio, similar to turning it off and back on again. Operating voltage is
measured at the KL 30 input. The radio is switched off if the system voltage exceeds 17V
to protect the radio, it will switch on when the voltage falls below 16V.
GAL (Speed Dependent Volume)
The speed signal from the IKE/KOMBI is available to the radio over the K/I Bus. GAL is not
a feature on vehicles equipped with DSP.
Bus Communication
The radio communicates with other modules via the K bus or I Bus dependent on the
model. The information shared over the bus line includes:
IKE/KOMBI - Terminal status (KL 15, KL R)
LCM/LSZ- Lights on
IKE/KOMBI link to TXD- Diagnosis
MID or BMBT- button or rotary knob status.
GM- Key used to lock or unlock vehicle
MFL- audio controls status
NG radios do not use anti-theft codes. Operation of the radio is only possible if
connected to a bus line and the detection of at least one other component.
Multi Information Radio (MIR)
The Multi-Information Radio (MIR) is used in the E52 Z8 and is the first of the NG series of
radios. The MIR contains the radio receiver, display screen, and control panel all in one unit.
A cassette player is not included.
The MIR is used to control and display the:
 GPS-Navigation System
 Audio system including CD Changer
 Telephone
 Outside temperature