GF54.30-P-0002MCU Instrument Cluster (IC), Function
GF54.30-P-0002MCU Instrument Cluster (IC), Function
1 Ambient temperature
2 Actuation of left turn signal indicator lamp (A1e1) or right turn signal indicator lamp (A1e2)
3 Actuation of high beams indicator lamp (A1e3)
4 Actuation of charge indicator and warning lamp for alternator (A1e5)
5 Actuation of brake fluid warning lamp and parking brake warning lamp (A1e7)
6 Actuation of seat belt warning lamp (A1e9)
7 Actuation of airbag indicator and warning lamp (A1e15)
8 Actuation of tire pressure monitor warning lamp (A1e66)
9 Actuation of ABS indicator lamp (A1e17)
10 Actuation of CHECK ENGINE indicator lamp (A1e26)
11 Actuation of oil pressure warning lamp (A1e30)
12 Actuation of ESP warning lamp (A1e41)
13 Actuation of electric steering indicator lamp (with code (A1e18V26) Power steering, EPS (FFO))
14 Actuation of coolant temperature warning lamp (A1e54)
15 Coolant temperature
16 Wheel speed
17 Fuel-tank level
18 Vehicle speed
19 Shifting system warning message
20 Transmission mode/gear indicator request
21 Status of airbag indicator and warning lamp (A1e15)
22 Actuation of chime
23 Actuation of low beams indicator lamp (A1e67)
24 Drive authorization system warning message
25 Weight category
26 Warning lamp for fuel tank cap monitoring (as of vehicle ident end number 208455)
A1 Instrument cluster
B14 Outside temperature display temperature sensor
N2/7 Restraint systems control unit
N3/10 ME-SFI [ME] control unit
N10/10 SAM control unit
N15/6 Automated manual transmission control unit
N23 Heater/AC operating unit
N47-5 ESP control unit
N68 Steering assist control unit (for code (V26) Power steering, EPS (FFO))
N88 TPM [RDK] control unit
N110 Weight Sensing System (WSS) control unit
CAN Controller Area Network (data bus/CAN bus) (CAN)
CAN-B Controller area network bus class B (interior compartment) (CAN B)
General
The instrument cluster has the following tasks:
^ Vehicle speed display
^ Output of the important operating condition of the vehicle
^ Warning at critical vehicle operating conditions (visual and acoustic)
^ Information display for various systems
^ Display for maintenance interval display
Networking
The instrument cluster functions as a gateway between CAN and CAN-B.
Display elements
^ Left turn signal indicator lamp
^ Right turn signal indicator lamp
^ High beam indicator lamp
^ Alternator charge monitoring and warning lamp
^ Brake fluid and parking brake warning lamp
^ Seat belt warning lamp
^ Airbag indicator and warning lamp
^ ABS indicator lamp
^ Electric steering indicator lamp
^ "CHECK ENGINE" MIL
^ Oil pressure warning lamp
^ ESP warning lamp
^ Coolant temperature warning lamp
^ Tire pressure monitor warning lamp
^ Low beam indicator lamp
^ Electronic speedometer (A1p8)
^ Multifunction display (A1p13)
^ Tank cap monitoring warning lamp
All indicator and warning lamps are light emitting diodes.
Operation
The lower left button in the instrument cluster can be used to switchover the multifunction displays.
The lower right button in the instrument cluster can adjust the instrument cluster illumination at circuit 15 ON and circuit 58 ON in five dimmer stages to match individual requirements.
Activate
Circuit 15 ON activates the instrument cluster. The multifunction display shows the current content at any given time, switches on the instrument cluster illumination and the needle for the speed display is shown on the display field.
After circuit 15 OFF the instrument cluster remains active for another 30 s. The speed display needle disappears from the display field behind a cover.
For circuit 15 OFF the instrument cluster can be activated the following preconditions:
^ Circuit 58 ON
The instrument cluster illumination is switched on and the current contents of the multifunction display are displayed. After circuit 58 OFF the instrument cluster remains active for another 30 s.
^ By pressing a button on the instrument cluster.
The multifunction display illumination is switched on for 30 s and the current content displayed.
Acoustic signals
The following acoustic signals are produced and output via the sound signal generator integrated in the instrument cluster:
^ Turn signal indicator
^ Warning and information signals
Turn signal indicator
The turn signal indicator is always accompanied by an acoustic clicking sound generated in the same rhythm. The acoustic turn signal indicator is actuated with:
^ Turn signaling (at double frequency if a turn signal lamp fails)
^ Hazard warning flashing
Warning and information signals
A warning or signal tone is emitted:
^ When the standing lights are switched on, the transmitter key removed and the driver door open (light warning)
^ When the driver door is opened while the engine is running and a gear engaged (door warning)
^ As confirmation that the daytime running lights have been activated or deactivated (with code (K06) Daytime running lights)
^ If at circuit 15 On and with the doors closed, the driver seat belt buckle restraint systems switch (S68/3) is not closed (seat belt reminder warning)
^ If the driver seat belt buckle restraint systems switch or the front passenger seat belt buckle restraint systems switch (S68/4) is not closed when the front passenger seat is occupied and the vehicle speed is v > 25 km/h (seat belt reminder warning)
^ After circuit 15 Off and after removing the transmitter key, when the vehicle was locked using the emergency function
Actuation in each instance is via the CAN by the SAM control unit.
