Activate instrument cluster, function - GF54.30-P-2006SX

MODEL 221.0 /1, 216.3 up to Model Year 8

Activation

With the activation of the instrument cluster (A1) both the multifunction display (A1p13) and the scale illumination switch on automatically, the basic display of the menu trip computer (RRE) of the instrument cluster is always visible first.

The instrument cluster is activated by one of the following conditions:

Driver door open or closed (flank signal changes)
Switching on the light (circuit 58 ON)
Circuit 15R ON
Pressing the OK button (S110s6)
Pressing the "Back" and VCS Off button (S110s4)
Pressing the "ON" button (A40/9s6) in the front central operating unit (A40/9)
Pressing the button, free programming (A40/9s10) in the front central operating unit
Activation of the hazard warning system
Pressing one of the keys of the transmitter key (A8/1)

Information flow from driver door to the instrument cluster, shown on model 221 up to 31.8.06

Fig 1: Identifying Activate Instrument Cluster Information Flow Diagram

Courtesy of MERCEDES-BENZ USA

The information flows from the driver door to the instrument cluster as follows:

The right front rotary tumbler switch is read in discreetly by the right front door control unit.
The left front rotary tumbler switch is read in discreetly by the left front door control unit.
The left front door control unit and right front door control unit place signals on the interior CAN.
The central gateway control unit reads in the signals from the interior CAN and places them on the central CAN.
The instrument cluster reads in the signals from the central CAN and activates the scale illumination and the multifunction display.

Information flow from rotary light switch (S1) and from EIS [EZS] control unit (N73) to the instrument cluster, shown on model 221 up to 31.8.06

Fig 2: Identifying Information Flow Diagram (From Rotary Light Switch And From EIS Control Unit)

Courtesy of MERCEDES-BENZ USA

The information flows from the rotary light switch to the instrument cluster as follows:

The rotary light switch is read in by the upper control panel control unit via the upper control panel LIN.
The upper control panel control unit places the signals on the interior CAN.
The central gateway control unit reads in the signals from the interior CAN and places them on the central CAN.
The instrument cluster reads in the signals from the central CAN and activates the scale illumination and the multifunction display.

The information flows from the EIS [EZS] control unit as follows:

The circuit status is established by the position of the transmitter key in the EIS [EZS] control unit.
The EIS [EZS] control unit places the signal of the circuit status on the interior CAN.
The central gateway control unit reads in the signal from the interior CAN and places it on the central CAN.
The instrument cluster reads in the signal from the central CAN and activates the scale illumination and the multifunction display.

Information flow from multifunction steering wheel (MFL) and from the front central operating unit to the instrument cluster, shown on model 221 up to 31.8.06

Fig 3: Identifying Information Flow Diagram (From Multifunction Steering Wheel/Front Central Operating Unit To Instrument Cluster)

Courtesy of MERCEDES-BENZ USA

The information flows from the multifunction steering wheel [MFL] to the instrument cluster as follows:

The "Back" and VCS Off button and OK button are read in by the steering column module via the steering LIN.
The steering column module places the signals on the chassis CAN.
The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
The instrument cluster reads in the signals from the central CAN and activates the scale illumination and the multifunction display.

When button is "ON" the information flows to the instrument cluster as follows:

The "ON" button is read in by the front central operating unit.
The front central operating unit places the signals on the telematics CAN.
The COMAND controller unit reads in the signals from the telematics CAN and places them on the central CAN.
The instrument cluster reads in the signals from the central CAN and activates the scale illumination and the multifunction display.

With the free programming button the information flows to the instrument cluster as follows:

The free programming button is located in the front central operating unit and is read in discreetly by the upper control panel control unit.
The upper control panel control unit places the signals on the interior CAN.
The central gateway control unit reads in the signals from the interior CAN and places them on the central CAN.
The instrument cluster reads in the signals from the central CAN and activates the scale illumination and the multifunction display.

Information flow from transmitter key to the instrument cluster, shown on model 221 up to 31.8.06

Fig 4: Identifying Information Flow Diagram (From Transmitter Key To Instrument Cluster)

Courtesy of MERCEDES-BENZ USA

The information flows from the transmitter key to the instrument cluster as follows:

When one of the transmitter keys is pressed this sends a coded radio signal to the vehicle.
The antenna in the rear window receives the coded signals and passes them on to the rear window antenna amplifier module.
The rear window antenna amplifier module amplifies the coded signals and passes them on to the rear SAM with fuse and relay module control unit.
The rear SAM with fuse and relay module control unit places the coded signals on the interior CAN.
The EIS [EZS] control unit reads in the coded signals from the interior CAN, evaluates them and places the respective signal on the interior CAN.
The central gateway control unit reads in the signals from the interior CAN and places them on the central CAN.
The instrument cluster reads in the signals from the central CAN and activates the scale illumination and the multifunction display.

Instrument cluster, component description

GF54.30-P-6000SX