Technical training. Product information. FI 2 General Vehicle Electronics Edited for the U.S. market by: BMW Group University Technical Training ST1103 5/1/2011 V_/ BMW Service General information Symbols used The following symbol is used in this document to facilitate better comprehension or to draw attention to very important information: A Contains important safety information and information that needs to be observed strictly in order to guarantee the smooth operation of the system. Information status and national-market versions BMW Group vehicles meet the requirements of the highest safety and quality standards. Changes in requirements for environmental protection, customer benefits and design render necessary continu¬ ous development of systems and components. Consequently, there may be discrepancies between the contents of this document and the vehicles available in the training course. This document basically relates to the European version of left hand drive vehicles. Some operating el¬ ements or components are arranged differently in right-hand drive vehicles than shown in the graphics in this document. Further differences may arise as the result of the equipment specification in specific markets or countries. Additional sources of information Further information on the individual topics can be found in the following: • Owner's Handbook • Integrated Service Technical Application. Contact: conceptinfo@bmw.de ©2010 BMW AG, Munich Reprints of this publication or its parts require the written approval of BMW AG, Miinchen. The information contained in this document forms an integral part of the technical training of the BMW Group and is intended for the trainer and participants in the seminar. Refer to the latest relevant infor¬ mation systems of the BMW Group for any changes/additions to the technical data. Status of the information: November 2010 VH-23/lnternational Technical Training FI 2 General Vehicle Electronics Contents 1. Introduction.1 2. Vehicle electrical system.2 2.1. Bus overview.2 2.2. Special features.6 3. Voltage supply.9 3.1. Components.9 3.1.1. Battery.11 3.2. System wiring diagram.13 3.3. Energy management.14 3.3.1. Charge condition display.14 3.3.2. Influence of steering power.15 3.4. Supply to EPS.15 3.4.1. System wiring diagram.16 4. Car Access System.20 4.1. System wiring diagram.21 4.2. Overview of functions.23 5. Comfort Access.25 5.1. System wiring diagram.26 6. Central locking system.28 6.1. System wiring diagram.29 6.2. Overview of functions.30 7. Power window regulator.32 7.1. System wiring diagram.32 7.2. Examples of the signal path.33 7.2.1. Switch block, driver's door.33 7.2.2. Power window switch, front passenger door.34 8. Anti-theft system.35 8.1. System wiring diagram.36 9. Exterior lights.38 9.1. System wiring diagram.39 9.2. Lighting, front.42 9.3. Lighting, rear.44 10. Interior light.45 10.1. System wiring diagram.46 FI 2 General Vehicle Electronics Contents 10.2. Examples of switching operations.48 11. Front seats.49 11.1. System wiring diagram.50 11.2. Seat adjustment.52 11.3. Seat heating.55 11.4. Active seat ventilation.55 11.5. Side head airbag.56 11.6. Seatbelt.57 12. Heating and air conditioning systems.58 12.1. Equipment.58 FI 2 General Vehicle Electronics 1. Introduction The vehicle electrical system of the FI 2 is based extensively on current BMW models. This training material provides an overview of the most important topics relevant to the vehicle electrical system. For more information on the various topics, refer to the F01/F02 documentation. F12 topic F01/F02 training material Voltage supply F01/F02 voltage supply Car Access System F01/F02 Car Access System. Comfort Access F01/F02 Comfort Access Central locking system F01/F02 central locking system Power window regulator F01/F02 power window regulator Alarm system F01/F02 alarm system Exterior lights F01/F02 exterior lights Interior light F01/F02 interior lighting. 1 FI 2 General Vehicle Electronics 2. Vehicle electrical system 2.1. Bus overview FI 2 Bus overview 2 FI 2 General Vehicle Electronics 2. Vehicle electrical system Index Explanation 1 Control units with wake-up authorization 2 Start-up node control units for starting up and synchronizing the FlexRay bus system ACC-SEN Active Cruise Control Sensor ACSM Advanced Crash Safety Module AL Active steering AMPT Top HiFi amplifier BCU Battery Charge Unit (for auxiliary battery only w/IAC) CAS Car Access System CID Central information display COMBOX Combox (Combox multimedia, Combox multimedia with telematics) CON Controller CVM Convertible top module DME Digital Motor Electronics DSC Dynamic Stability Control DVDC DVD changer EDCSHL Electronic Damper Control satellite, rear left EDCSHR Electronic Damper Control satellite, rear right EDCSVL Electronic Damper Control satellite, front left EDCSVR Electronic Damper Control satellite, front right EGS Electronic transmission control EKPS Electronic fuel pump control EMF Electromechanical parking brake EPS Electronic power steering (electromechanical power steering) FRM Footwell module GWS Gear selector switch HEADUNIT Headunit (car information computer or car information computer basic II) HSR Rear axle slip angle control HUD Head-Up Display ICM Integrated Chassis Management IHKA Automatic integrated heating and A/C control unit JBE Junction box electronics KAFAS Camera-based driver support systems KOMBI Instrument panel NVE Night vision electronics 3 FI 2 General Vehicle Electronics 2. Vehicle electrical system Index Explanation PDC Park Distance Control PMA Parking manoeuvring assistant TPMS Tire Pressure Monitor System SINE Siren with tilt alarm sensor SMBF Front passenger seat module SMFA Driver's seat module SWW Blind Spot Detection (Lane change warning) SZL Steering column switch cluster TRSVC Control unit for camera systems VDM Vertical Dynamics Management VSW Video switch ZGM Central gateway module The FlexRay is shown in a simplified form in the overview of the bus systems. The following system wiring diagram shows the actual physical layout (topology). 4 FI 2 General Vehicle Electronics 2. Vehicle electrical system F12 FlexRay system wiring diagram 5 TEtO-1349 FI 2 General Vehicle Electronics 2. Vehicle electrical system Index Explanation 1 Electronic Damper Control satellite, front left 2 Electric Power Steering (EPS) 3 Dynamic Stability Control (DSC) 4 Digital Motor Electronics (DME) 5 Electronic Damper Control satellite, front right 6 Vertical Dynamics Management (VDM) 7 Electronic Damper Control satellite, rear right 8 Rear axle slip angle control (HSR) 9 Parking assistant (PMA) 10 Blind Spot Detection (SWW) 11 Integrated Chassis Management (ICM) 12 Electronic Damper Control satellite, rear left 13 Central gateway module (ZGM) 14 Steering column switch cluster (SZL) 15 Car Access System (CAS) 16 Active steering (AL) Terminal 15WUP Wake-up with terminal 15 ON 2.2. Special features The vehicle electrical system of the FI 2 is based on the F01 (vehicle electrical system NB2020). FlexRay is also used in the FI 2 as the system bus for networking of the systems that control the dy¬ namic handling characteristics and engine control. The central gateway module ZGM contains two star couplers with eight bus drivers. The bus drivers forward the data of the control units via the commu¬ nication controller to the central gateway module (ZGM). The FlexRay control units are connected to these bus drivers. To avoid reflections on the lines, both ends of the data lines are terminated with resistors. The FI 2 has Ethernet access in order to be able to program the complete vehicle quickly. It has been possible to discontinue access via the Media Oriented System Transport bus system for programming purposes thanks to the extremely high data transfer rate of the Ethernet (100 MBit/s). The body controller area network 2 (K-CAN2) facilitates communication between control units with a high data transfer rate (500 kBit/s). The K-CAN2 is also connected to the other bus systems via the central gateway module (ZGM). The Powertrain Controller Area Network 2 (PT-CAN2) serves as a redundant system for the Powertrain Controller Area Network (PT-CAN) in the area of engine and transmission control unit and also to for¬ ward signals to the electric fuel pump. 6 FI 2 General Vehicle Electronics 2. Vehicle electrical system F12 component locations Index Explanation 1 Electronic Damper Control satellite, front left (EDCSVL) 2 Central gateway module (ZGM) 3 Electronic power steering (EPS) 4 Head-Up Display (HUD) 5 Car Access System (CAS) 6 Digital Motor Electronics (DME) 7 Instrument panel (KOMBI) 8 Electronic Damper Control satellite, front right (EDCSVR) 9 Central information display (CID) 10 High-beam assistant (FLA) (Not US) 7 FI 2 General Vehicle Electronics 2. Vehicle electrical system Index Explanation 11 Advanced Crash Safety Module (ACSM) 12 Junction box electronics (JBE) Park Distance Control (PDC) 13 Vertical Dynamics Management (VDM) 14 DVD changer (DVDC) 15 Front passenger seat module (SMBF) 16 Electronic fuel pump control (EKP) 17 Combox (Combox multimedia with telematics) 18 Video Module (VM) (Not US) 19 Convertible top module (CVM) 20 Electronic Damper Control satellite, rear right (EDCSHR) 21 Blind Spot Detection (SWW) 22 Siren with tilt alarm sensor (SINE) 23 Electromechanical parking brake (EMF) 24 Tire Pressure Monitor System (TPMS) 25 Parking maneuvering assistant (PMA) 26 Rear axle slip angle control (HSR) 27 Top HiFi amplifier (AMPT) 28 Control unit for camera systems (TRSVC) 29 Video switch (VSW) 30 Electronic Damper Control satellite, rear left (EDCSHL) 31 Automatic integrated heating and A/C control unit (IHKA) 32 Integrated Chassis Management (ICM) 33 Controller (CON) 34 Gear selector switch (GWS) 35 Car information computer (CIC) 36 Electronic transmission control (EGS) 37 Driver's seat module (SMFA) 38 Steering column switch cluster (SZL) 39 Active steering (AL) 40 Night vision electronics (NVE) 41 Dynamic Stability Control (DSC) 42 Footwell module (FRM) 43 Camera-based driver support systems (KAFAS) 8 FI 2 General Vehicle Electronics 3. Voltage supply The voltage supply concept of the FI 2 is based on current BMW models. The components and layout used are essentially the same. 3.1. Components Due to the steady increase of electrical functions for comfort, communication and safety in BMW vehi¬ cles, the voltage supply is becoming ever more important. Five separate power distribution boxes are installed in the FI 2: • Power distribution box in the engine compartment • Power Distribution Module PDM in engine compartment (only on 640i with the N55B3000 en¬ gine). • Junction box for the power distribution box next to the glove box • Luggage compartment power distribution box on right side of the luggage compartment • Battery power distribution box. The junction box comprises the junction box power distribution box and junction box electronics (JBE). 9 FI 2 General Vehicle Electronics 3. Voltage supply FI 2 Main power lines Index Explanation Power Distribution Module PDM (only on 640i with the N55B3000 engine). Power distribution box, engine compartment Battery power distribution box Transition connection point Alternator Luggage compartment power distribution box Positive battery connection point Starter motor Junction box for the power distribution box 9 Safety battery terminal (SBK) 11 Battery 10 FI 2 General Vehicle Electronics 3. Voltage supply Three main power lines are routed along the vehicle underbody of the FI 2 from the luggage compart¬ ment to the engine compartment: • A main power line runs from the safety battery terminal (SBK) to the starter motor and alterna¬ tor via the positive battery connection point. Copper cable with a cross-section of 50 mm 2 is used up to the transition connection point below the luggage compartment floor and alumini¬ um cable with a cross-section of 80 mm 2 is used from this point onwards. • The second main power line supplies voltage to the Power Distribution Module (PDM). This copper cable has a cross-section of 16 mm 2 and is protected by a high-current circuit breaker in the battery power distribution box. • The third main power line runs to the power distribution box in the engine compartment. Cur¬ rent is supplied to the electrical fan via this power distribution box. This line is also protected by the high-current circuit breaker in the battery power distribution box and is a copper cable with a cross-section of 25 mm 2 . Two additional battery cables run through the vehicle interior to the luggage compartment power dis¬ tribution box and one battery cable runs to the junction box for the power distribution box. Each of the three battery cables is protected by a high-current circuit breaker in the battery power distribution box. To prevent the main power lines on the vehicle underbody from being damaged, these are laid in a pro¬ tected zone. 3.1.1. Battery Voltage in the FI 2 is always supplied by a 90 Ah AGM (absorbent glass matt) battery. The vehicle bat¬ tery is installed at the rear of the luggage compartment in the Center. AGM battery With the introduction of the FI 0, the intelligent battery sensor (IBS) has been used to improve the bat¬ tery condition detection. The following criteria are used to establish whether or not the battery in the FI 2 is defective and needs to be replaced: • Identification of faulty battery cells in the vehicle battery • Establishing the remaining capacity of the vehicle battery • Battery water loss detected 11 FI 2 General Vehicle Electronics 3. Voltage supply • Long immobilization period with low state of charge • Charge capacity • Charge balance when the vehicle is at a standstill • Charge balance during journey • Lowest permitted discharging These criteria are recorded using the measured values obtained from the intelligent battery sensor and other measured variables of the voltage supply. The measured values are then evaluated using math¬ ematical models. Only specific criteria may be used to determine the battery condition, depending on the driving style and equipment used in the vehicle. Intelligent battery sensor (IBS) Index Explanation 1 Negative battery terminal 2 Intelligent battery sensor 3 Battery earth lead The battery condition detection determines whether the battery needs to be replaced based on the severity and number of defects detected. Furthermore, the vehicle user is notified via the "Change battery" Check Control message that a problem may exist. The fault entry can only be deleted once the vehicle battery change service function has been carried out. The condition of the battery can be read out during service via the "battery condition" or "energy diag¬ nosis" procedures ("General information / battery" menu) in order to determine whether it needs to be replaced. 12 FI 2 General Vehicle Electronics 3. Voltage supply 3.2. System wiring diagram F12 System wiring diagram of voltage supply 13 TE10-U65 FI 2 General Vehicle Electronics 3. Voltage supply Index Explanation 1 Electric fan 2 Alternator 3 Starter motor 4 Power distribution box, engine compartment 5 Power Distribution Module (PDM) (only on 640i with the N55B3000 engine) 6 Positive battery connection point 7 Digital Motor Electronics (DME) 8 Junction box for the power distribution box 9 Junction box electronics (JBE) 10 Luggage compartment power distribution box 1 (not US) 11 Relay for electric fan 12 Intelligent battery sensor (IBS) 13 Battery 14 Safety battery terminal (SBK) 15 Battery power distribution box 16 Integrated Chassis Management (ICM) 17 Car Access System (CAS) 18 Central gateway module (ZGM) 19 Crash Safety Module (ACSM) Terminal 15N Ignition (after-run) Terminal 30 Terminal 30 Terminal 30B Terminal 30, basic operation Terminal 30F Terminal 30, fault-dependent LIN-Bus Local interconnect network bus 1 In vehicles equipped with the automatic engine start-stop function (MSA), terminal 30B_DC/DC is al¬ so in the power distribution box in the luggage compartment (not currently available in the US model). 3.3. Energy management The FI 2 energy management has been extended to include a number of functions. 3.3.1. Charge condition display If the FI 2 is in transport mode, the battery's state of charge is continuously displayed when in opera¬ tion. The carrier can therefore charge the battery on time in order to prevent deep discharging of the battery, and therefore damage to the battery: 14 FI 2 General Vehicle Electronics 3. Voltage supply 3.3.2. Influence of steering power The power consumption of the electric power steering (EPS) is extremely high. In order to avoid a brief reduction in the steering servo availability, the energy management of the FI 2 anticipates and re¬ sponds to steering-intensive driving maneuvers (parking or three-point turns). To do this, specific in¬ put variables (e.g. vehicle speed, brake pedal operation and steering angle) are evaluated. The energy management can implement the following measures: • Raise the idling speed and adjust the ignition timing to increase the engine torque • Increase the vehicle voltage via the alternator • Turn off convenience functions (heated rear window, outside mirror heating system and seat heating). 3.4. Supply to EPS The voltage supply to the Electric Power Steering (EPS) varies depending on which equipment in¬ stalled in the vehicle: • Vehicles without Integral Active Steering (SA 2VH): 12V • Vehicles with Integral Active Steering (SA 2VH): 24 V. With this version, the steering servo is fully electric. In vehicles with Integral Active Steering (SA 2VH), the Electric Power Steering (EPS) is combined with a planetary gearbox with override function. For more information on the Electric Power Steering (EPS), refer to the FI 2 Chassis Dynamics section of this training material. 15 FI 2 General Vehicle Electronics 3. Voltage supply 3.4.1. System wiring diagram FI 2 EPS system wiring diagram, 12 V 16 TE10-U66 FI 2 General Vehicle Electronics 3. Voltage supply Index Explanation 1 Electric Power Steering (EPS) 2 Digital Motor Electronics (DME) 3 Junction box for the power distribution box 4 Junction box electronics (JBE) 5 Integrated Chassis Management (ICM) 6 Intelligent battery sensor (IBS) 7 Battery 8 Battery power distribution box 9 Steering column switch cluster (SZL) 10 Instrument panel (KOMBI) 11 Central gateway module (ZGM) Terminal 15N Ignition (after-run) Terminal 30 Terminal 30 17 FI 2 General Vehicle Electronics 3. Voltage supply FI 2 System wiring diagram of EPS with 24 V and active steering FI 2 General Vehicle Electronics 3. Voltage supply Index Explanation 1 Electric Power Steering (EPS) 2 Digital Motor Electronics (DME) 3 Junction box for the power distribution box 4 Junction box electronics (JBE) 5 Integrated Chassis Management (ICM) 6 Separator 7 Charging controller for auxiliary battery (Battery Charge Unit [BCU]) 8 Luggage compartment power distribution box 9 Auxiliary battery 10 Intelligent battery sensor (IBS) 11 Battery 12 Battery power distribution box 13 Steering column switch cluster (SZL) 14 Instrument panel (KOMBI) 15 Central gateway module (ZGM) Terminal 15N Ignition (after-run) Terminal 30 Terminal 30 Terminal 30F Terminal 30, fault-dependent LIN-Bus Local interconnect network bus 19 FI 2 General Vehicle Electronics 4. Car Access System The fourth generation Car Access System used in current BMW models is also used in the FI 2. With it comes the full functionality of Comfort Access integrated into the Car Access System. As of series introduction, the drive authorization (Passive Go) system is fitted as standard equipment in the FI 2. Drive authorization allows the customer to start the engine without actively using the remote key or ID transmitter. Vehicles equipped with drive authorization require no insertion slot. An ID trans¬ mitter or remote key only needs to be somewhere inside the passenger compartment for the engine to be started. The remote key/ID transmitter comprises, among other things: • A battery • Remote control function • Transponder coil for emergency start function • Spare key • Receiver unit. Up to eight remote keys/ID transmitters can be used with a particular vehicle. The battery has a four year estimated service life. FI 2 Remote key/ID transmitter Index Explanation 1 Unlock vehicle button 2 Lock vehicle button 3 Unlock trunk push button 4 Panic mode 5 Area for ring antenna (transponder coil for emergency start) 6 Battery compartment lid 7 Integrated key release button 8 Integrated key A Top view B Rear view 20 FI 2 General Vehicle Electronics 4. Car Access System 4.1. System wiring diagram F12 System wiring diagram of Car Access System 21 TE10-1382 FI 2 General Vehicle Electronics 4. Car Access System Index Explanation 1 Engine compartment lid contact switch 2 Digital Motor Electronics (DME) 3 Dynamic Stability Control (DSC) 4 Central gateway module (ZGM) 5 Electronic transmission control (EGS) 6 Starter motor 7 Digital Motor Electronics (DME) 8 Power Distribution Module 9 Integrated Chassis Management (ICM) 10 Junction box electronics (JBE) 11 Junction box for the power distribution box 12 Luggage compartment power distribution box 13 DC/DC converter (for MSA)* (not US) 14 Central locking system button on inside of trunk 15 trunk push-button 16 Instrument panel (KOMBI) 17 Steering column switch cluster (SZL) 18 Button for central locking system/hazard warning switch 19 Brake light switch 20 Clutch switch (with manual gearbox only) 21 Footwell module (FRM) 22 Crash Safety Module (ACSM) 23 Interior antenna for Comfort Access 24 Antenna diversity with remote control receiver 25 Interior antenna for Comfort Access 26 Hotel position switch 27 Start/stop button 1 28 Ring antenna (transponder coil) 29 Car Access System (CAS) AS_START Start/start termination (DME) CAS-Bus Car Access System bus Terminal 15_1 Ignition (output 1) Terminal 15_3 Ignition (output 3) Terminal 15N Ignition (after-run) Terminal 15WUP Wake-up with terminal 15 ON 22 FI 2 General Vehicle Electronics 4. Car Access System Index Explanation Terminal 30 Terminal 30 Terminal 30B Terminal 30, basic operation Terminal 50 Terminal 50 load LIN-Bus Local interconnect network bus * Additional button with LED (shown to right of start/stop button) only in vehicles with automatic en¬ gine start-stop function (MSA), (not available in the US) 4.2. Overview of functions The Car Access System performs, among other functions, the role of central control unit via which the vehicle is accessed and locked. Consequently, the Car Access System has full responsibility for the central locking system. The Car Access System incorporates the following functions for the FI 2: • Comfort Access • Central locking system • Power window regulators • Terminal control • Electronic immobilizer. Other functions of the Car Access System are: • Vehicle data storage • Data transfer for Conditioned Based Service (CBS) • Plausibility check of signals from remote key/ID transmitter. Various functions are released or suppressed by the Car Access System. However, other control units are involved in actually carrying out these functions: • Junction box electronics (JBE) • Footwell module (FRM) • Roof function Center (FZD). For the purposes of communication with other components of the vehicle electrical system, the Car Access System is connected to the K-CAN2, CAS data bus and local interconnect network bus. The Car Access System analyzes the status of the hood contact switch and broadcasts it for use by the alarm system. The Car Access System also analyzes the status of the following buttons and initiates the central lock¬ ing function. 23 FI 2 General Vehicle Electronics 4. Car Access System • Button for central locking system on dashboard • Trunk lid push-button on A-pillar • Central locking system button on inside of trunk. The Car Access System supplies voltage to the brake light switch and also analyzes its status. A remote key/ID transmitter must be located in the passenger compartment in order for the engine to be started. The engine can now be started by pressing the start/stop button with the brake pedal pressed and the vehicle is operational. For a more detailed description of the functions, please read the " F01/F02 Car Access System" train¬ ing material available on TIS and ICR 24 FI 2 General Vehicle Electronics 5. Comfort Access Using Comfort Access, the customer can unlock and open the vehicle without actively using the ID transmitter irrespective of where in the vehicle the customer wishes to gain access. It is sufficient if the ID transmitter is in the immediate vicinity (within a range of about. 1.5 m) of the vehicle. Comfort Access first featured in the E65 (03/2002) then was successively introduced in various BMW models. The FI 2 is standard equipment from series introduction. The benefits of Comfort Access are: • High level of operating convenience when unlocking and locking the vehicle • Convenient and fast access to the vehicle • Simple engine start/shutdown procedure • Maximum comfort for the driver. The Comfort Access that features in the FI 2 is a version that is based on predecessor systems and has been adapted to the requirements of the FI 2. As is the case with current BMW models, the entire function is incorporated into the Car Access System which means the FI 2 also has no separate Com¬ fort Access control unit. If the ID transmitter has been detected and is grasped by a hand reaching into the handle recess of the outer door handle on one of the doors, the vehicle unlocks and can then be opened by pulling the out¬ er door handle. If the ID transmitter is outside the vehicle and the sensitive surface on the outer door handle of one of the doors is touched, the vehicle locks. Comfort Access is divided into the following functions: • Access authorization (Passive Entry) • Drive authorization (Passive Go) • Locking authorization (Passive Exit). For a more detailed description of the functions, refer to the "F01/F02 Comfort Access " training ma¬ terial available on TIS and ICR 25 FI 2 General Vehicle Electronics 5. Comfort Access 5.1. System wiring diagram □ c D n FI 2 Comfort Access system wiring diagram 26 TE10-1381 FI 2 General Vehicle Electronics 5. Comfort Access Index Explanation 1 Footwell module (FRM) 2 Junction box electronics (JBE) 3 Junction box for the power distribution box 4 Door contact, front passenger side 5 Outside door handle electronics (TAGE) on front passenger side 6 Comfort Access aerial (door entrance on right) 7 Interference suppression filter 8 Luggage compartment antenna, front passenger side 9 Luggage compartment power distribution box 10 Antenna for Comfort Access (rear bumper) 11 Trunk lid contact with trunk lock 12 Central locking system button on inside of trunk 13 Trunk lid light 14 Trunk lid push-button 15 Luggage compartment light 16 Luggage compartment antenna, driver side 17 Interference suppression filter 18 Comfort Access antenna (entrance on left) 19 Outside door handle electronics TAGE on driver side 20 Door contact, hall effect sensors for lock barrel on driver side 21 Car Access System with CA Comfort Access function 22 Antenna for Comfort Access (vehicle interior, front) 23 Antenna for Comfort Access (vehicle interior, rear) Terminal 30B Terminal 30, basic operation Terminal 30F Terminal 30, fault-dependent 27 FI 2 General Vehicle Electronics 6. Central locking system The central locking system locks and unlocks all doors, the fuel filler flap and trunk centrally. It is in¬ stalled in the FI 2 as standard and can be operated via the following components: • Remote key/ID transmitter • Driver's door lock barrel (door lock) • Outer door handle • Button for central locking system on dashboard • Button for central locking system on inside of trunk • Trunk lid push-button on A-pillar • Trunk lid push-button on outside of trunk lid (integrated in BMW badge). The FI 2 has no lock in the Trunk lid that can be unlocked mechanically. The central locking system in the FI 2 is based on the familiar central locking system that already fea¬ tures in the E70, E90 or F01/F02. 28 FI 2 General Vehicle Electronics 6. Central locking system 6.1. System wiring diagram « ® F12 Central locking system wiring diagram 29 TEtO-1339 FI 2 General Vehicle Electronics 6. Central locking system Index Explanation 1 Car Access System (CAS) 2 Button for central locking system/hazard warning switch 3 Junction box electronics (JBE) 4 Junction box for the power distribution box 5 Ground lights, front passenger side 6 Door contact, central locking system on front passenger side, front 7 Interference suppression filter 8 Remote control receiver 9 Luggage compartment power distribution box 10 Central locking system, fuel filler flap 11 Trunk lid contact with trunk lock 12 Central locking system button inside the trunk 13 Trunk lid light 14 Trunk lid push-button 15 Luggage compartment light 16 Interference suppression filter 17 Hotel position switch (only in US version) 18 Central locking system, Center armrest 19 Door contact, hall effect sensors for lock barrel, central locking system on driver's side front 20 Ground lights, driver's side 21 Footwell module (FRM) 22 Trunk lid push-button Terminal 30 Terminal 30 Terminal 30B Terminal 30, basic operation LIN-Bus Local interconnect network bus 6.2. Overview of functions The function of the central locking system is basically divided between two control units. • The Car Access System assumes the central control function. The Car Access System knows what the system statuses of the central locking system are which is why the Car Access Sys¬ tem authorizes the unlocking, locking and deadlocking of the vehicle. • The junction box electronics executes the requests to unlock or lock the vehicle. The vehicle can be unlocked and locked actively or passively. 30 FI 2 General Vehicle Electronics 6. Central locking system Active means that the vehicle can be opened after it has been unlocked by pressing the button on the remote key/ID transmitter. The vehicle can be locked by pressing the "lock" button after the doors have been closed. A_ The vehicle can only be locked when the driver's door is closed. For a more detailed description of the functions, refer to the "F01/F02 Central locking system " train¬ ing material available on TIS and ICR 31 FI 2 General Vehicle Electronics 7. Power window regulator 7.1. System wiring diagram FI 2 Power window regulator system wiring diagram 32 9051*0131 FI 2 General Vehicle Electronics 7. Power window regulator Index Explanation 1 Central gateway module (ZGM) 2 Car Access System (CAS) 3 Junction box electronics (JBE) 4 Power window motor with indirect anti-trap mechanism on front passenger side at front 5 Power window switch, front passenger side 6 Power window motor with indirect anti-trap mechanism on front passenger side at rear 7 Convertible top module (CVM) 8 Luggage compartment power distribution box 9 Relay for raising rear window 10 Relay for lowering rear window 11 Rear-window drive 12 Heated rear window 13 Power window motor with indirect anti-trap mechanism on driver's side at rear 14 Button for opening/closing convertible top 15 Switch block, driver's door 16 Power window motor with indirect anti-trap mechanism on driver's side at front 17 Footwell module (FRM) Terminal 15N Ignition (after-run) Terminal 30 Terminal 30 Terminal 30B Terminal 30, basic operation LIN-Bus Local interconnect network bus 7.2. Examples of the signal path The following examples show the signal paths before the power window motors open or close the side windows and rear window. As a prerequisite, operation of the power windows must have been enabled by the Car Access System. 7.2.1. Switch block, driver's door If the front left or front right power window switch is pressed, the signal is routed to the footwell mod¬ ule via the local interconnect network (LIN) bus. The footwell module controls the relevant power win¬ dow motor. If the rear left or rear right power window switch is pressed, the signal from the switch block in the driver's door is routed to the footwell module via the local interconnect network (LIN) bus. The footwell module sends the signal to the junction box electronics via the body controller area network 2 (K-CAN 2). The junction box electronics (JBE) controls the relevant power window motor. 33 FI 2 General Vehicle Electronics 7. Power window regulator If the rear window power window switch is pressed, the signal from the switch block in the driver's door is sent to the footwell module (FRM) via the local interconnect network (LIN) bus. The footwell module sends the signal to the convertible top module (CVM) via the body controller area network 2 (K-CAN 2). The convertible top module (CVM) actuates the relay that lowers or raises the rear window and receives the signals from the hall effect sensors via which the position of the rear window is identi¬ fied. The rear-window drive is actuated via the relay that lowers or raises the rear window. FI 2 Switch block, driver's door Index Explanation 1 Power window switch that opens/closes all four side windows and rear window simultaneously 2 Power window switch, rear left 3 Power window switch, front left 4 Power window switch, front right 5 Power window switch, rear right 6 Button that operates the rear window 7.2.2. Power window switch, front passenger door The signal is routed to the junction box electronics (JBE) when the power window switch in the front passenger door is operated. The junction box electronics sends the signal to the footwell module (FRM) via the body controller area network 2 (K-CAN 2). The footwell module controls the relevant power window motor. 34 FI 2 General Vehicle Electronics 8. Anti-theft system The Anti-theft system (DWA) is standard equipment of the FI 2. Its purpose is to indicate when the vehicle is accessed without authorization by emitting an alarm warning. The alarm can be activated acoustically or visually. To do this, the alarm system must be activated. When activated, the alarm sys¬ tem monitors the whole of the vehicle interior. In addition the alarm system monitors the engine compartment and the vehicle's rest position. In order that nothing can be stolen from the luggage compartment, the alarm system monitors opening of the trunk lid. The alarm system also signals when an attempt is made to tamper with the vehicle, e.g. by cutting through the feed line to the siren with tilt alarm sensor (SINE). The passenger compartment is monitored by four MuW (multiplex microwave sensors) sensors in to¬ tal via a radar-based measuring procedure. These are located behind the door and side trim panels. When monitoring is in progress the MuW sensors detect all movements and directions of movement. The siren with tilt alarm sensor (SINE) activates the MuW sensors. The siren with tilt alarm sensor SINE is located on the right, on the bumper side support. 35 FI 2 General Vehicle Electronics 8. Anti-theft system 8.1. System wiring diagram © FI 2 Alarm system 36 © ® 111 FI 2 General Vehicle Electronics 8. Anti-theft system Index Explanation 1 Engine compartment lid contact switch 2 Car Access System (CAS) 3 Light-emitting diode (DWA) 4 Junction box electronics (JBE) 5 Door contact, front passenger side 6 MuW sensor, front passenger side at front 7 MuW sensor, front passenger side at rear 8 Luggage compartment power distribution box 9 Siren with tilt alarm sensor (SINE) 10 Trunk lid contact with trunk lock 11 MuW sensor, front passenger side at rear 12 MuW sensor, driver's side at front 13 Door contact, driver's side 14 Footwell module (FRM) Terminal 30 Terminal 30 LIN-Bus Local interconnect network bus The status of the following components is monitored: • the door contacts, by the footwell module (FRM) • the engine compartment lid contact switch, by the Car Access System (CAS) • the rear lid contact switch, by the junction box electronics (JBE). As soon as a status changes, the siren with tilt alarm sensor (SINE) receives a corresponding signal. If the alarm system is activated, an alarm is triggered. 37 FI 2 General Vehicle Electronics 9. Exterior lights The exterior lights of the FI 2 are based on most current BMW models. The standard equipment of the FI 2 includes bi-xenon headlights. The daytime running lights and side lights are implemented in the corona rings using LED technology and thus guarantee a high recogni¬ tion value in traffic. The LEDs can be operated in two power stages. When dimmed to roughly 10% of their maximum power they operate as side lights, while at full power they operate as daytime driving lights. The daytime driving lights are activated when the vehicle is started. If the automatic lighting system switches the low-beam headlight on, or if the driver switches the side lights or low-beam headlight on at the light switch himself, the light ring changes automatically to side lights. A white LED positioning light (eyebrow) is installed. The fog light has been implemented in LED technology for the first time in the FI 2. For more information on exterior lights, refer to the “ F01/F02 Exterior lights" training material available on TIS and ICP. 38 FI 2 General Vehicle Electronics 9. Exterior lights 9.1. System wiring diagram © © © © EE ® - mini in y • ttt l © © © =-&- © EE © j^j i i Wi < 3ijl| CJ uEB L| “ (J jl) t i (») © =r\ CAS i'- -1 1 1 * CMC 9 © r® 0 K130F -B- © F12 System wiring diagram, exterior lights at front 39 TE10-1343 FI 2 General Vehicle Electronics 9. Exterior lights Index Explanation 1 Left headlight (cornering light, second stepper motor, positioning light and position sensor only required) 2 Left fog light 3 Right fog light 4 Right headlight (cornering light, second stepper motor, positioning light and position sensor only required) 5 Side repeater, right 6 Junction box electronics 7 Junction box for the power distribution box 8 Luggage compartment power distribution box 9 Ride height sensor, rear 10 Integrated Chassis Management (ICM) 11 Steering column switch cluster (SZL) 12 Operating facility, light switch 13 Central locking button/hazard warning switch 14 Footwell module (FRM) 15 Central gateway module (ZGM) 16 Car Access System (CAS) 17 Side repeater, left 18 Ride height sensor, front Terminal 30F Terminal 30, fault-dependent LIN-Bus Local interconnect network bus 40 FI 2 General Vehicle Electronics 9. Exterior lights F12 System wiring diagram, exterior lights at rear 41 TEtO-1344 FI 2 General Vehicle Electronics 9. Exterior lights Index Explanation 1 Electronic transmission control (EGS) 2 Reversing light switch (only with manual gearbox) 3 Rain-light-solar-condensation sensor 4 Junction box electronics 5 Junction box for the power distribution box 6 Interference suppression filter 7 Luggage compartment power distribution box 8 Trailer module (not US) 9 Outer rear light, right 10 Inner rear light, right (in trunk; rear fog light only available with European version) 11 Number plate light on right (in rear bumper) 12 Number plate light on left (in rear bumper) 13 Inner rear light, left (in trunk; rear fog light only available with European version) 14 Outer rear light, left 15 Additional brake light 16 Interference suppression filter 17 Footwell module (FRM) 18 Brake light switch 19 Operating facility, light switch 20 Central locking button/hazard warning switch 21 Steering column switch cluster (SZL) 22 Car Access System (CAS) 23 Central gateway module (ZGM) Terminal 30F Terminal 30, fault-dependent LIN-Bus Local interconnect network bus 9.2. Lighting, front The following graphic shows the layout of the front headlight. 42 FI 2 General Vehicle Electronics 9. Exterior lights © ® F12 Front headlight Index Explanation 1 Corona ring with light-emitting diode for parking lights/daytime driving lights 2 Cornering light 3 Side lights, positioning light 4 Xenon light for low and high-beam headlight 5 Corona ring with light-emitting diode for parking lights/daytime driving lights 6 Fog light (light-emitting diodes) 7 Turn indicator A Note: The FI 2 corona rings have two modes of operation, parking lights at 10% of their full intensity and daytime running lights at 100%. 43 FI 2 General Vehicle Electronics 9. Exterior lights 9.3. Lighting, rear The FI 2 features a two-part rear light. The layout of the rear lights is shown in the following graphic. © ® © FI 2 Rear light Q © ® ® i Index Explanation 1 Turn indicator (light-emitting diode) 2 Reversing light 3 Brake light for Brake Force Display 4 Tail light (light-emitting diode) 5 Brake light (light-emitting diode) 6 Tail light/side marker light (light-emitting diode) 44 FI 2 General Vehicle Electronics 10. Interior light The interior lighting of the FI 2 is controlled via the footwell module (FRM) control unit. The footwell module is the central control unit for the interior lighting system. All interior light outputs of the footwell module are pulse-width-modulated. This ensures that the brightness of the interior lighting remains uniform in the event of voltage fluctuations. The pulse width modulation is also used for the soft ON/soft OFF function. The components of the interior light in the front roof area are integrated in the roof function center (FZD) and in the sun visors. The footwell lighting is located on the underside of the dashboard. Voltage is supplied to the rear reading and passenger-compartment lights via the roof function center. ® 2 ® 4 ® ® 7 F12 Roof Function Center (FZD) Index Explanation 1 Emergency call button 2 Reading light on left 3 Button for reading light on left 4 Button for interior light 5 Button for reading light on right 6 Reading light, right 7 Indicator lamp for front passenger airbag deactivation 8 Ambient lighting 9 Interior light 10 Ambient lighting 45 FI 2 General Vehicle Electronics 10. Interior light 10.1. System wiring diagram FI 2 System wiring diagram, interior light 46 TE10-1341 FI 2 General Vehicle Electronics 10. Interior light Index Explanation 1 Footwell module (FRM) 2 Footwell light, driver's side at front 3 Footwell light, front passenger side at front 4 Glove box switch 5 Glove box light 6 Junction box electronics (JBE) 7 Junction box for the power distribution box 8 Door contact, front passenger side 9 Inside door handle light, front passenger side 10 Ground lights, front passenger side 11 Entrance lighting, front passenger side 12 Door pocket lighting, front passenger side 13 Door entry lighting, front passenger side 14 Side trim panel lighting, front passenger side at rear 15 Luggage compartment power distribution box 16 Luggage compartment light 17 Trunk lid contact with trunk lock 18 Trunk lid light 19 Interference suppression filter 20 Side trim panel lighting, driver's side at rear 21 Door entry lighting, driver's side 22 Door pocket lighting, driver's side 23 Entrance lighting, driver's side 24 Ground lights, driver's side 25 Inside door handle light, driver's side 26 Door contact, driver's side 27 Vanity mirror light switch on driver's side 28 Vanity mirror light on driver's side 29 Center console storage compartment lighting 30 Vanity mirror light on front passenger side 31 Vanity mirror light switch, front passenger side 32 Roof function center (FZD) with interior light unit and reading lights Terminal 30 Terminal 30 Terminal 30B Terminal 30, basic operation 47 FI 2 General Vehicle Electronics 10. Interior light 10.2. Examples of switching operations If a door is opened when the vehicle is unlocked, the status of the relevant door contact changes. The footwell module (FRM) evaluates the status and sends the request to switch on the interior light. Par¬ allel to this, the footwell module (FRM) switches on the door entry lighting for the open door, the door entry lighting and footwell lighting. The status of the door contact changes again when the door is closed. The footwell module initiates the procedure to switch off the interior light. The luggage compartment lights are connected to the voltage supply via terminal 30B. If the trunk lid is opened, the luggage compartment light and trunk lid light are switched on via the trunk contact. 48 FI 2 General Vehicle Electronics 11. Front seats The following front seat versions are available for the FI 2: • Multi-contour seat • Front ventilated seat • Active front seat The following table provides an overview of the available optional equipment (SA). Multi-contour seat Seat memory Standard Seat heating for driver/front passenger SA 248 / ZCW package Lumbar support, driver/front passenger Standard Active seat for driver / front passenger SA 455 / ZLS Luxu¬ ry seating package Ventilation seat for driver / front passenger SA 453 / ZLS Luxu¬ ry seating package Crash-active head restraint 1 Standard Comfort head restraint Standard 1 For more information on the crash-active headrest refer to the “FI 2 Passive safety system" section of this training material. 49 FI 2 General Vehicle Electronics 11. Front seats 11.1. System wiring diagram FI 2 System wiring diagram, driver's seat (Multi-contour seat, with Active seat for driver/front passenger, SA 455) 50 TE10-U60 FI 2 General Vehicle Electronics 11. Front seats Index Explanation 1 Central gateway module (ZGM) 2 Automatic integrated heating and A/C control unit (IHKA) 3 Junction box electronics (JBE) 4 Junction box for the power distribution box 5 Exterior mirror motors, front passenger side 6 Driver's seat module (SMFA) 7 Electric motor, forward/back seat adjustment 8 Electric motor, seat angle adjustment 9 Electric motor, seat height adjustment 10 Electric motor, backrest angle adjustment 11 Motor, head restraint height adjustment 12 Motor, seat depth adjustment 13 Motor, backrest upper section adjustment 14 Motor, backrest width adjustment 15 Lumbar active-seat drive 16 Massage function drive (only with active seat front, SA 455 included with ZLS Luxury Seating Package) 17 Massage function drive (only with active seat front, SA 455 included with ZLS Luxury Seating Package) 18 Fan, seat surface (only with seat ventilation front, SA 453 included with ZLS Luxury Seating Package) 19 Fan, backrest (only with seat ventilation front, SA 453 included with ZLS Luxury Seating Package) 20 Solenoid valves, lumbar-support adjustment 21 Seat heating, backrest (only with seat heating for driver/front passenger, SA 494 included with ZCW Cold Weather Package) 22 Seat heating, seat surface (only with seat heating for driver/front passenger, SA 494 included with ZCW Cold Weather Package) 23 Switch, backrest lock 24 Switch for easy entry 25 Switch block, seat adjustment 26 Switch block, driver's door 27 Exterior mirror motors, driver's side 28 Footwell module (FRM) Terminal 30B Terminal 30, basic operation LIN-Bus Local interconnect network bus 51 FI 2 General Vehicle Electronics 11. Front seats 11.2. Seat adjustment The seats of the FI 2 can be adjusted backwards or forwards in nine directions with the maximum equipment specification. FI 2 Maximum seat adjustment Index Explanation 1 Head restraint height adjustment 2 Backrest upper section adjustment 3 Backrest angle adjustment 4 Backrest width adjustment 5 Forward/back seat adjustment 52 FI 2 General Vehicle Electronics 11. Front seats Index Explanation 6 Seat height adjustment 7 Seat angle adjustment 8 Seat depth adjustment 9 Lumbar-support adjustment Seat adjustment options Multi-contour seat Seat height adjustment electric Forward/back seat adjustment electric Seat angle adjustment electric Backrest angle adjustment electric Head restraint height adjustment electric Seat depth adjustment electric Backrest width adjustment electric Backrest upper section adjustment 1 electric Lumbar-support adjustment electric 1 When the backrest upper section in the FI 2 is adjusted, only the top section moves, and not the en¬ tire upper section of the backrest including head restraint (as is the case in the F01). ® ® © ® ® @ ® 8 ® ® F12 Seat adjustment, driver (at seat), electrical Comfort seat 53 FI 2 General Vehicle Electronics 11. Front seats Index Explanation 1 Active seat button 2 Button 2 (calls up stored position) 3 Button 1 (calls up stored position) 4 Button M (stores current position) 5 Backrest width adjustment 6 Lumbar-support adjustment 7 Backrest angle and head restraint height adjustment 8 Backrest upper section adjustment 9 Forward / back, seat height and seat angle adjustment 10 Seat depth adjustment A seat adjustment with top-mounted memory buttons features for the first time in the FI 2, which means they are also visible to the occupants when seated. The front seats feature a rear easy-entry facility via the forward/back seat adjustment and a backrest forwards-folding mechanism. FI 2 Rear easy-entry facility Index Explanation 1 Handle, backrest forwards-folding mechanism 2 Button, rear easy-entry facility A Fold the backrest back and lock it before driving off, as otherwise there is danger of the seat moving unexpectedly. 54 FI 2 General Vehicle Electronics 11. Front seats In contrast to the E63, the handle for the backrest forwards-folding mechanism is located directly on the reversing mechanism. It no longer needs to be operated in order to fold back the backrest. Depending on the seat position, the seat and/or head restraint move downwards when the backrest is folded forwards. If the backrest does not engage correctly after it has been folded back, a Check Control message is displayed in the instrument panel (KOMBI). The seat can be moved into the required position by pressing the rear easy-entry facility button. The movement stops when the button is released. If the seat is adjusted backwards, it moves into its origi¬ nal position. If the rear easy-entry facility button is only briefly pressed, the seat moves into the corresponding end position. The movement can be stopped by pressing the button again. 11.3. Seat heating The buttons for the operation of the seat heating are in the IHKA control panel. Index Explanation 1 Button for seat heating, driver seat 2 Button for seat heating, front passenger seat 11.4. Active seat ventilation The buttons for the operation of the active seat ventilation are in the IHKA control panel. 55 FI 2 General Vehicle Electronics 11. Front seats FI2 IHKA control box Index Explanation 1 Button for active seat ventilation on driver seat 2 Button for active seat ventilation on front passenger seat 11.5. Side head airbag FI 2 Side head airbag Index Explanation 1 Side head airbag The side head airbag is not under the seat cover and instead is mounted as a container solution later¬ ally on the seat frame. 56 FI 2 General Vehicle Electronics 11. Front seats 11.6. Seat belt Front seats with an integrated seat belt system are used in the FI 2, which makes the seat belt consid¬ erably easier to reach. FI 2 Seat belt Index Explanation 1 Seat belt buckle tensioner 2 Side head airbag 3 Automatic tensioner with adaptive force limiter The inertia reel is located below the seat pan of the front seat which means the rear seat passengers have more knee room than in the E64 and also reduces the weight of the backrest. The front seats are equipped with seat occupancy detection and belt tensioners. 57 FI 2 General Vehicle Electronics 12. Heating and air conditioning systems The 2/2-zone automatic integrated heating and A/C control unit IHKA is installed in the FI 2. The first number denotes the number of controllable temperature zones (temperature selector wheels) and the second denotes the number of controllable air volume and air distribution zones (separate fan settings). FI 2 IHKA control panel 12.1. Equipment • Separate temperature control, front left/right • Separate control of amount and distribution of air for front left and right • Convertible mode with open soft top • Independent ventilation • Residual heat utilization • Anti-fogging • Fresh air and recirculated air filtering (microfilter) • Individual automatic control with five intensity levels Solar compensation 1 Automatic air recirculation control (including combination filter 2 ) • ALL function (driver's settings are transferred to front passenger). 1 A solar sensor detects external light/heat sources that affect the interior climate. 2 Combination microfilter is used to trap dust and pollen while a carbon element stops unpleasant odors. 58 Bayerische Motorenwerke Aktiengesellschaft Handlerqualifizierung und Training RontgenstraBe 7 85716 UnterschleiBheim, Germany