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Table of Contents
E46 DRIVER INFORMATION
Subject Page
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
E46 Bus Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Instrument Cluster. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Check Control Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Range/Program Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Dynamic Digital Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Analog Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Digital Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Output Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Redundant Data Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
SIA IV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
On Board Computer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Light Switch Center (LSZ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
E46 Convertible Third Brake Light. . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Lamp Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Home Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Emergency Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Xenon Head lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
LWR- Headlight Beam Throw Control. . . . . . . . . . . . . . . . . . . . . . . . .35
Multi-Function Steering Wheel.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Initial Print Date: 6/98 Revision Date: 11/21/00
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Inhaltsverzeichnis

Seite 1 - E46 DRIVER INFORMATION

Table of ContentsE46 DRIVER INFORMATIONSubject PageIntroduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seite 2 - Introduction

11E46 Driver InformationDIGITAL INPUT SIGNALSThe normal ignition switch terminals (KL R, KL 15 & KL 50) are input to the cluster. Variousfunction

Seite 3 - BUS SCHEMATIC

OUTPUT SIGNALSSPEED SIGNAL “A” - The vehicle speed signal is available as an output for control mod-ules that require precise vehicle speed informatio

Seite 4 - E46iC BUS SYSTEM

REDUNDANT DATA STORAGE Specific information is stored redundantly in the instrument cluster and in the Light SwitchModule. The data stored redundantly

Seite 6 - INSTRUMENT CLUSTER

15E46 Driver InformationSIA IVModels: E46 Production: From start of productionSIA IV Components:• Instrument Cluster with LED display• DME• Vehicle Sp

Seite 7 - RANGE/PROGRAM MATRIX DISPLAY

16E46 Driver informationPrinciple of OperationStarting with the E46 a new method for displayingthe Service Interval is used. Colored LEDs are nolonge

Seite 8 - DYNAMIC DIGITAL INPUTS

17E46 Driver InformationReset procedure using the Reset Mode. (possible from 9/99 onward for E46, MY2001 E52)• Ignition key must be “off”• Press and h

Seite 9 - ANALOG INPUT SIGNALS

18E46 Driver informationReset using Diagnosis Program • Connect the Diagnosis head to the diagnostic connector of the vehicle.• Identify the vehicle a

Seite 10 - DIGITAL INPUT SIGNALS

19E46 Driver InformationON BOARD COMPUTERThe On Board computer of the E46 contains the following functions:• Time• Outside temperature• Average fuel c

Seite 11 - OUTPUT SIGNALS

INSTRUMENT CLUSTER TEST FUNCTIONSIn addition to the fault memory and diagnostic link, the base instrument cluster contains aseries of test functions t

Seite 12 - REDUNDANT DATA STORAGE

3E46 Driver InformationIntroductionThe driver information system is presented to the driver in two main areas, the instrumentcluster and the center co

Seite 13 - E46 Driver information

TEST 01. - Vehicle specific data including: SubTests:12345 1.0= VIN 4812 1.1= Body number834762 6_1.2 = Part number of cluster010203 1.3= Coding/Diag

Seite 14 - OILSERVICE

TEST 07. - Temperature and SpeedSub Tests:032 7.0= Coolant temp input 32OC245 7.1= Outside temp input 24.5OC5283 7.2= Engine speed 5,283 RPM058 7.3= V

Seite 15

23E46 Driver InformationTEST 19. - LOCK/UNLOCKSub-TestsL-ON...L-OFF 19.0 = Display changes from “L-ON” to “L-OFF” every second. To unlock test functi

Seite 16

24E46 Driver informationLIGHT SWITCH CENTER (LSZ)The Light Switch Center is a compact component that combines the electronic control,switching, and mo

Seite 17

COMPONENT OPERATIONThe LSZ control module receives inputs from the following switches:Headlight/parking light switch, fog light switch, potentiometer

Seite 18 - ON BOARD COMPUTER

26E46 Driver InformationE46 Convertible Third Brake lightThe E46iC uses Neon technology for the third brake light which is mounted in the trunk lid.Th

Seite 19

LAMP MONITORINGLamp monitoring on the E46 is a function of the LSZ control module. The following lampsare monitored in both the hot and cold states:•

Seite 20 - E46 Driver Information

HOME LIGHTINGThis convenience feature provides lighting for the driver and passengers to leave the vehi-cle and enter their house. The feature is swi

Seite 21

EMERGENCY (FAIL SAFE) LIGHTING The LSZ provides emergency lighting in the event of a control module failure. If the proces-sor of the LSZ control modu

Seite 22

30E46 Driver InformationXENON HEADLIGHTSOVERVIEWThe automotive industry/press often identify xenon lighting systems as HID (high intensitydischarge)

Seite 23 - LIGHT SWITCH CENTER (LSZ)

4E46 Driver informationE46 BUS SYSTEMSBUS SCHEMATICAExample Bus system as introduced.

Seite 24 - BRAKE LIGHT SWITCH

31E46 Driver InformationVERSION IDENTIFICATION & SYSTEM SUMMARIESVersion identification is specific to vehicle model with the exception of the E38

Seite 25

32E46 Driver InformationXENON HIGH INTENSITY DISCHARGE BULBSXenon bulbs are identified as D-2S (D=Discharge).Xenon bulbs illuminate when an arc

Seite 26 - LAMP MONITORING

33E46 Driver InformationXENON BULB MONITORINGXenon bulb function is monitored by the Lighting Control Module (LCM E38/E39 -- LSZE46). The

Seite 27 - REDUNDANT STORAGE

34E46 Driver InformationDIAGNOSISXenon control modules are not connected to the diagnostic link. However, the vehicle spe-cific Lighting Control Mod

Seite 28

35E46 Driver InformationHEADLIGHT BEAM THROW CONTROL- LWROVERVIEWLWR automatically adjusts the vertical positioning of the headlights to maintai

Seite 29 - XENON HEADLIGHTS

36E46 Driver InformationLWR COMPONENTSCONTROL ELECTRONICSLSZ - E46The E46 LWR function is integrated into the control electronics of the LSZ. The LSZ

Seite 30

37E46 Driver InformationFUNCTIONAL DESCRIPTIONThe E46 LWR system comes on-line when the ignition switch is turned to KL 15. The LWR control electro

Seite 31

MULTI-FUNCTION STEERING WHEELThe multi-function steering wheel of the E46 corresponds to the MFL introduced on the E38and carried over to the E39. The

Seite 32

E46iC BUS SYSTEMThe Bus system of the E46iC continues to use the K-Bus as the main communication linkbetween body and driver information modules. The

Seite 33 - XENON HEADLIGHT TESTING

SIGNALS WHICH ARRIVE AT THE INSTRUMENTCLUSTER VIA THE K-BUSSIGNALS WHICH ARRIVE AT THE INSTRUMENTCLUSTER THROUGH THE CAN-BUS6E46 Driver info

Seite 34

7E46 Driver InformationINSTRUMENT CLUSTERThe instrument cluster uses analog gauges for display of engine and road speed, enginetemperature, fuel level

Seite 35 - LWR COMPONENTS

8E46 Driver informationCHECK CONTROL LCD MATRIX DISPLAYThe pictogram check control display carries over from the E39 for failure display warningsof va

Seite 36 - FUNCTIONAL DESCRIPTION

9E46 Driver InformationDYNAMIC DIGITAL INPUTSDISTANCE SIGNAL- This input is supplied to the cluster by the ABS/ASC+T control mod-ule as a square wave

Seite 37 - MULTI-FUNCTION STEERING WHEEL

10E46 Driver informationANALOG INPUT SIGNALSBATTERY VOLTAGE - Battery voltage is monitored by the cluster and a fault is stored ifthe voltage exceeds

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