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BMW E85 Service Training

Instrument cluster
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Summary of Contents for BMW E85

  • Page 1 6HUYLFH 7UDLQLQJ ( ,QVWUXPHQW &OXVWHU 6HPLQDU :RUNLQJ 0DWHULDO...
  • Page 2 BMW Service Training course. Refer to the relevant "Technical Service" information for any changes/supple- ments to the Technical Data. © 2001 BMW AG München, Germany. Reprints of this manual or its parts require the written approval of BMW AG, München VS-42 MFP-HGK-BRK-E85_1110...

  • Page 3: Table Of Contents

    Contents Page CHAP 1 Instrument cluster Introduction System overview - Input/output signals - System schematic Introduction - New system features/modifications Components - Display areas - Indicator and warning lamps - LC display - Program and gear display - Acoustic generators - Setting buttons System functions - Bus network...

  • Page 5: Instrument Cluster

    E85 Instrument cluster Instrument cluster Introduction Instrument cluster/SIA The instrument cluster in the Z4 has a sporty appearance in line with a roadster. The instrument cluster is very compact. The needle instruments are integrated in 2 housing attachments. The two needle instruments for the speedometer and the revcounter are thus the predominant visual features.

  • Page 6: System Overview

    E85 Instrument cluster System overview - Input/output signals Input signal Output signal Fig. 1: E85 System overview with input/output signals KT-9915 - 2 -...
  • Page 7 E85 Instrument cluster Index Explanation Index Explanation Handbrake switch Ground supply, terminal 31 Brake-lining wear sensors Fuse-carrier with terminals 30, R and 15 Coolant level switch Outside-temperature sensor DSC control unit Fuel-tank sensor 1 Oil-pressure switch Fuel-tank sensor 2 (6-cylinder engine only,...

  • Page 8: System Schematic

    E85 Instrument cluster - System schematic KT-9957 Fig. 2: E85 System schematic, instrument cluster - 4 -...
  • Page 9 E85 Instrument cluster Index Explanation Index Explanation Brake-lining wear sensor, Handbrake switch front left Digital Motor Electronics Fuel-tank sensor 1 Dynamic Stability Control Fuel-tank sensor 2 Outside-temperature sensor Brake-lining wear sensor, rear right Coolant level switch D-Bus Diagnosis bus Oil-pressure switch...
  • Page 10 E85 Instrument cluster Instrument-cluster plug connection The 26-pin plug connection is located on the reverse side of the instrument cluster. Fig. 3: Reverse side of E85 instrument cluster KT-10498 Index Explanation Plug connection, plug connector, 26-pin Sound opening, acoustic generator...

  • Page 11: Introduction

    E85 Instrument cluster Introduction This seminar working material contains descriptions of the instrument cluster of the new Z4 (E85) scheduled for volume- production launch in 09/2002 (USA). The basis of these descriptions is the standard EU model. The USA-specific variations are described in the section headed Country-specific version.
  • Page 12 E85 Instrument cluster - LC display - Program and gear display for automatic gearbox and SMG Sequential Manual Gearbox - Acoustic generator for outputting acoustic alarms - Acoustic generator for outputting turn-signal flasher rate - Two setting buttons, integrated in instrument cluster...

  • Page 13: Display Areas

    E85 Instrument cluster - Display areas The instrument cluster is divided into the following display areas: - Needle instruments - Indicator and warning lamps - LC display - Program and gear display for automatic gearbox and SMG Sequential Manual Gearbox KT-9916 Fig.
  • Page 14 E85 Instrument cluster Instrument-cluster lighting The speedometer and the revcounter are illuminated by slit light between the dial face and the graduated dial. The brightness of the dial-face, needle and display illumination (dimming) is determined by the LSZ light switch centre.
  • Page 15 E85 Instrument cluster Undervoltage detection The instrument cluster incorporates an undervoltage-detection facility. Undervoltage detection is performed in the instrument cluster with the aid of a comparator (software-based voltage comparison). Note: Overvoltage in the electrical system is also detected. In the event of a system voltage > 16 volts, it is possible e.g. for:...

  • Page 16: Indicator And Warning Lamps

    - Indicator and warning lamps KT-9963 Fig. 5: E85 Indicator and warning lamps There are a total of 24 indicator and warning lamps in the instrument cluster of the new Z4. The following two lamps are new additions to the established lamps: - Indicator lamp for EPS: The Electric Power Steering system is used in the new Z4 for the first time.
  • Page 17 E85 Instrument cluster Overview of indicator and warning lamps Symbol Colour Meaning Activated by Active Predrive from Check terminal Green Turn-signal flasher, LSZ (K bus) Terminal R left Exception: Hazard- warning lights: Terminal 30 KT-9969 Green Turn-signal flasher, LSZ (K bus)
  • Page 18 E85 Instrument cluster Symbol Colour Meaning Activated by Active Predrive from Check terminal Yellow ABS inactive DSC via separate Terminal 15 2 s line KT-9975 General brake warning light: Parking brake Handbrake switch Terminal 15 1 s yellow (+ warning sound)
  • Page 19 E85 Instrument cluster Symbol Colour Meaning Activated by Active Predrive from Check terminal Green Rear fog light LSZ (K bus) Terminal 15 (not USA) terminal 56 KT-9980 Yellow Electric Power EPS (PT-CAN bus) Terminal 15 2 s Steering EPS KT-9981...
  • Page 20 E85 Instrument cluster Symbol Colour Meaning Activated by Active Predrive from Check terminal Yellow Gearbox limp-home EGS/SMG Terminal 15 2 s program (PT-CAN bus) KT-9986 Yellow Electronic engine- DME (PT-CAN bus) Terminal 15 -- power control KT-9987 Yellow Motor electronics...
  • Page 21 E85 Instrument cluster Symbol Colour Meaning Activated by Active Predrive from Check terminal Yellow Open tank filler cap DME (PT-CAN bus) Terminal 15 -- (CHECK FILLER CAP , USA only) KT-9993 Yellow Fuel reserve Fuel-tank sensor Terminal 15 2 s...

  • Page 22: Lc Display

    (5HP19) or an SMG Sequential Manual Gearbox, the program and gear display is featured in a separate LC display. KT-9964 Fig. 7: E85 Program and gear display Index Explanation Index Explanation Program mode Drive position The LC display is located between the speedometer and the revcounter.

  • Page 23: Acoustic Generators

    An internal speaker outputs all further acoustic alarms. KT-10313 Fig. 8: E85 Acoustic generators Index Explanation Index Explanation Acoustic relay Internal speaker Depending on the incident, the acoustic alarms are output once or intermittently.

  • Page 24: Setting Buttons

    E85 Instrument cluster The seat-belt reminder for USA is activated with terminal 15 ON if the seat-belt contact is not closed. The acoustic alarm is intermittent and lasts for max. 6 seconds. After this time has elapsed, only the indicator and warning lamp remains lit.

  • Page 25: System Functions

    The instrument cluster is the central gateway (interface) for the bus network: The bus systems PT-CAN bus, K bus and diagnosis bus and the byteflight are interconnected in the instrument cluster. KT-9917 Fig. 10: E85 Bus network with instrument cluster as gateway Index Explanation Index Explanation CD changer...
  • Page 26 E85 Instrument cluster Index Explanation Index Explanation Central Information Display Park Distance Control Soft-top module RADIO Radio Digital Motor Electronics Rain/light sensor Dynamic Stability Control SBSL Satellite, B-pillar, left Electronic transmission SBSR Satellite, B-pillar, right control Electric Power Steering Safety and Information...

  • Page 27: On-Board Computer

    - On-board computer The on-board computer functions are the same as those of the E46. A new feature in the E85 is the possibility of combining time and outside temperature in the display depending on the equipment specification. In the Low version of the on-board computer, only the outside temperature is indicated in the LC display.

  • Page 28: Display In Multi-Information Radio

    E85 Instrument cluster - Display in Multi-Information Radio In cars with Multi- Information Radios (MIR), the on-board computer functions are also shown in the radio display. KT-10317 Fig. 12: Multi-Information Radio (MIR) The average fuel consumption 2 on-board computer function is also displayed.

  • Page 29: Redundant Data Storage (Rda)

    The "Distance to junction" navigation data is displayed in parallel in the instrument cluster. KT-10581 Fig. 13: E85 On-board computer display, navigation-system on-board monitor Settings (e.g. units or reset) which are made at the navigation- system controls using the rotary pushbutton are sent by bus telegram to the instrument cluster.

  • Page 30: Country-Specific Version

    E85 Instrument cluster Country-specific version - Country-specific version: instrument cluster The instrument cluster comes in 6 versions, distinctions being made between EU LHD, EU RHD and USA LHD vehicles. The instrument cluster is also different depending on the gearbox installed: Cars fitted with manual gearboxes do not have a program and gear display.
  • Page 31 E85 Instrument cluster EU right-hand drive Difference from EU left-hand drive: The scale of the speed dial is in both mph (miles per hour) and km/h (kilometres per hour). Fig. 14: E85 EU RHD instrument cluster KT-9966 - 27 -...
  • Page 32 Difference from EU left-hand drive: The scale of the speed dial is in both mph (miles per hour) and km/h (kilometres per hour). Fig. 15: E85 USA instrument cluster KT-9967 There are also differences in the indicator and warning lamps:...
  • Page 33 E85 Instrument cluster Acoustic alarms There are country-specific differences in the acoustic alarms. In USA cars, an ignition-key alarm is issued. In Gulf State cars, a single warning sound is issued when the coded speed is exceeded (limit warning). Ignition-key alarm for USA cars: An intermittent warning sound is issued when the driver's door is opened with terminal 15 OFF and the ignition key still in the ignition lock.

  • Page 34: Notes For Service

    R. KT-10318 Fig. 16: E85 Example: test function outside temperature (test function 7 . 1 ) The test functions are shown in the odometer and trip-odometer display areas in the top line of the display.
  • Page 35 E85 Instrument cluster Test function 19: locking and unlocking test functions Only the first two test functions are freely accessible. All further test functions are locked from the third test function. The lock can only be removed by means of test function 19.
  • Page 36 E85 Instrument cluster Terminating test functions The test functions are terminated by terminal R OFF . With terminal R ON, the test functions are exited by: - Pressing the left setting button (S/R for Set/Reset) for longer than 5 seconds...
  • Page 37 E85 Instrument cluster Test function Description __tESt __8._ ADC values __tESt __8.0 - ADC system voltage __tESt __8. 1 - ADC tank sensor, left/right __tESt __8.2 - ADC brake-wear sensors __tESt __8.3 - ADC outside-temperature sensor __tESt __9._ System voltage __tESt __9.0...
  • Page 38 Visual system test KT-10319 Fig. 17: E85 Test function 2, visual system test In the visual system test, all the indicator lamps and lights - with the exception of the ABS warning lamp - are activated briefly. The needle instruments are moved from the lower to upper stop and back again.

  • Page 39: Diagnosis

    E85 Instrument cluster - Diagnosis Component replacement and trial replacement There are three possible combinations for replacing the instrument cluster/light switch centre: - Instrument cluster faulty, light switch centre OK - Light switch centre faulty, instrument cluster OK - Light switch centre and instrument cluster must be replaced Simultaneous replacement of the light switch centre and the instrument cluster must be avoided.
  • Page 40 E85 Instrument cluster Car & key memory There are different car-memory functions for the E85 with regard to the display of units in the instrument cluster. Car memory Setting Explanation Consumption l/100 km The clock must be reset after the unit mpg (UK) display has been changed.

  • Page 41: Sia Iv Service Interval Indicator

    5 times? at 1 Hz Button pressed? Perform SIA reset Term. R Display new Display: Display old routine date for date for End SIA 5 seconds 5 seconds for 2 seconds Fig. 18: E85 Reset routine diagram KT-10024 - 37 -...

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