Alfa Romeo 159 1.8 Da 01/06 – TRIP COMPUTER – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - TRIP COMPUTER - Alfa Romeo 159 1.8 Da 01/06

TRIP COMPUTER - WIRING DIAGRAM Alfa Romeo 159 1.8 Da 01/06

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COMPONENTS - TRIP COMPUTER - Alfa Romeo 159 1.8 Da 01/06

Component code	Description	Reference to the operation
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXIFUSE BOX ON BATTERY
C020	PASSENGER SIDE DASHBOARD EARTH	-
E050	INSTRUMENT PANEL
H005	STEERING COLUMN SWITCH UNIT
M001	BODY COMPUTER
M050	ABS CONTROL UNIT
M089	STEERING LOCK CONTROL UNIT (NBS)
N040	FUEL PUMP AND LEVEL GAUGE

COMPONENT LOCATION - TRIP COMPUTER - Alfa Romeo 159 1.8 Da 01/06

TRIP COMPUTER - COMPONENT LOCATION Alfa Romeo 159 1.8 Da 01/06

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Component code	Description	Reference to the operation
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXIFUSE BOX ON BATTERY
C020	PASSENGER SIDE DASHBOARD EARTH	-
E050	INSTRUMENT PANEL
H005	STEERING COLUMN SWITCH UNIT
M001	BODY COMPUTER
M050	ABS CONTROL UNIT
M089	STEERING LOCK CONTROL UNIT (NBS)
N040	FUEL PUMP AND LEVEL GAUGE

DESCRIPTION - TRIP COMPUTER - Alfa Romeo 159 1.8 Da 01/06

The Trip Computer in the instrument panel shows the following information on its display:- Range [km]- Distance travelled [Km]- Average fuel consumption [Km/l]- Instantaneous fuel consumption [Km/l]- Average speed [Km/h]- Travelling time [hh:mm]There are two TRIP modes:- TRIP A (with manual reset only)- TRIP B (with manual or automatic reset from the key on that can be set using the setup menu)For more detailsTrip Computer data is calculated inside the instrument panel.The instrument panel is a CAN node through which information is exchanged with the Body Computer and with the other electronic units.This diagram shows the operation of instrument panel functions that also affect the Trip Counter.

FUNCTIONAL DESCRIPTION - TRIP COMPUTER - Alfa Romeo 159 1.8 Da 01/06

The ignition-operated power supply (INT) for the instrument panel E50 reaches pin 1 of connector A via the line for fuse F37 of the junction unit under the dashboard B2; the direct power supply reaches pin 2 of connector A via the fuse line F53 of the junction unit under the dashboard B2; pin 7 of connector A is earthed (earth controlled by the Body Computer M1).The instrument panel E50 is connected from pins 3 and 4 of connector A to the Body Computer M1 and via the latter to the entire CAN: the signal for the electronic speedometer (from the ABS control unit M50) is received via the CAN: the same signal is replicated from pin 16 of M50 at pin 7 of connector A of the Body Computer M1.The electronic rev counter receives the engine rpm signal received from the engine management control unit M10 via the CAN.The fuel level gauge is controlled according to the signals coming from the level gauge located in the electric fuel pump assembly N40 - at pins 4 and 15 of connector D of the Body Computer M1 and from there via the CAN to the instrument panel E50.The TRIP electronic module uses these signals to process information on instantaneous and average fuel consumption, range, average speed, Km travelled, duration etc.The Trip Computer zeroing button, located in the steering column switch unit H5, sends an earth signal to pin 6 of connector A of E50.