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Home >> Mercedes Benz >> 2002 >> C 320 Wagon (203.264) V6-3.2L (112.946) >> Repair and Diagnosis >> Instrument Panel, Gauges and Warning Indicators >> Description and Operation >> GF54.30-P-2006PP Activating Instrument Cluster, Function

GF54.30-P-2006PP Activating Instrument Cluster, Function




GF54.30-P-2006PP Activating Instrument Cluster, Function
- MODELS 203.0 /2 /7 up to 23.4.04






A1 Instrument cluster
N10/1 Front SAM control unit with fuse and relay module
N10/2 Rear SAM control unit with fuse and relay module
S1 Lamp switch module
S17/3 Left front door contact switch
S17/4 Right front door contact switch

Activating the instrument cluster (A1)
When the instrument cluster (A1) is activated the current contents are displayed and the instrument cluster illumination is switched on in the multifunction display (A1p13).
The instrument cluster is activated in the event of "circuit 15R ON" (A1). After "circuit 15R <> OFF" the instrument cluster (A1) still remains active for a further 30 seconds after the expiry of any warning messages.
With "circuit 15R OFF the instrument cluster (A1) is activated under the following conditions:
- When the trip odometer reset button (A1s3) is pressed (for 30 seconds).
- When the driver door is opened or closed (for 30 seconds).
- When the standing lamp or driving lamps are switched on "circuit 58d ON". It is active as long as the standing lamp or driving lamps "circuit 58d" are "ON"

As of 01.06.03 the instrument cluster (A1) detects the trip odometer reset button (A1s3) as jammed if it is pressed for more than 60 seconds. The trip odometer reset button (A1s3) is then interpreted by the instrument cluster (A1) as "not pressed".
If one of the mentioned conditions occurs while the instrument cluster (A1) is already active then the instrument cluster (A1) remains active for a further 30 seconds from this point in time.

Networking
The status of the left front door contact switch (S17/3) and right front door contact switch (S17/4) is read in by the rear SAM control unit with fuse and relay module (N10/2) and placed as a message on the Controller Area Network-Bus class B (interior) (CAN-B).
The status of the standing lamp "circuit 58d ON" or "circuit 58d OFF" is placed on the CAN-B by the front SAM control unit with fuse and relay module (N10/1).
The instrument cluster (A1) receives these messages and is activated if necessary.




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