Fanfare horns function - GF54.35-P-0001B

MODEL 208 as of 1.8.99, 210 as of 1.7.99

Function prerequisite:

Terminal 15: ON

Function:

One or more fanfare horns pushbuttons (S110s5, S111s5) is pressed when the impact absorber on the multifunction steering wheel is pressed.
The status of these buttons is read in by the instrument cluster (A1)
The DI control module (N73) is connected to the instrument cluster (A1) via a direct line. This line from the instrument cluster is grounded when a fanfare horns pushbutton is pressed.
If the starter switch is at least in position "1" , the control module (DI, N73) sends a message on the CAN/interior for the driver-side signal-acquisition and actuation control module (N10/1) to actuate the fanfare horns (H2)
The driver-side signal-acquisition and actuation control module (N10/1) actuates the FAN relay (K40/2k6). This relay is located on the driver-side fuse and relay module (K40/2).
The FAN relay (K40/2k6) switches the two fanfare horns (H2) to terminal 30.
The signal tone sounds

NOTE: One cable of the fanfare horns (H2) is always routed to ground, actuation therefore takes place by switching to terminal 30 (via K40/2k6).

The coil of the FAN relay (K40/2k6) is permanently connected to terminal 15R and when the fanfare horns (H2) are operated the other connection is routed to ground via the driver-side signal-acquisition and actuation control module (N10/1).

Fanfare horns pushbuttons (S110s5, S111s5)

The four fanfare horn pushbuttons are located on a printed-circuit board under the impact absorber of the multifunction steering wheel. This ensures that the fanfare horns can be triggered at any point on the impact absorber. The two right and two left buttons are each connected in parallel. Together with the buttons of the left and right pushbutton switch group on multifunction steering wheel (S110, S111) they are read in voltage coded by instrument cluster (A1) .

Also refer to the relevant wiring diagrams.

Diagnosis

Diagnosis is effected with HHTWIN, the Star diagnosis tool and the Diagnosis Manual.

Networking of components		GF54.35-P-0001-02B
Driver-side signal-acquisition and actuation control module (N10/1)		GF54.00-P-4101A
Contents, function description, instrument cluster (lC)		GF54.30-P-0997BZ
DI control module (DI, N73)		GF80.57-P-4102A
Reading in button positions, function	Multifunction steering wheel	GF82.90-P-3001A