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BMW E90 Manual

Vehicle electrical
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E90 General Vehicle Electrical
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Primary Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Functions of Footwell Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Functions of Roof Function Center . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Functions of Car Access System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Car Access System 2 - Input/Output . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Car Access System 2 - Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . .18
Central Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Control Modules for Central Locking Function . . . . . . . . . . . . . . . . . . . .20
Car Access System 2 (CAS2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Footwell Module (FRM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Unlocking/Locking the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Unlocking Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Locking Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Using Identification Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Center-Lock Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Mechanical Key/Spare Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Locking Button on Vehicle Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Opening the Trunk Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Opening with the Outer Trunk Lid Button . . . . . . . . . . . . . . . . . . . . . .24
Opening with the Inner Trunk Lid Button . . . . . . . . . . . . . . . . . . . . . . .24
Special Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Automatic Locking (Personal Profile) . . . . . . . . . . . . . . . . . . . . . . . . . .25
Selective Unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Unlocking After an Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Location of Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Footwell Module (FRM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Car Access System 2 (CAS2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Junction Box Electronics Control Module (JBE) . . . . . . . . . . . . . . . .26
Components of Central Locking System . . . . . . . . . . . . . . . . . . . . . . . . .27
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Center-Lock Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Driver's Door Lock Barrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Initial Print Date: 03/05
Revision Date: 04/05
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Summary of Contents for BMW E90

  • Page 1: Table Of Contents

    Table of Contents E90 General Vehicle Electrical Subject Page Introduction ..........8 Primary Control Modules .

  • Page 2: Subject Page

    Subject Page Central Locking Drive Units ........28 Central Locking Drive Units in the Doors .
  • Page 3 Subject Page Sensors ...........47 Functional Principle of the Capacitive Sensor .
  • Page 4 Initialization via the Power Window Switches ....74 Initialization via the BMW Diagnostic Equipment ... . .74 Power Window - Input/Output .
  • Page 5 Subject Page Slide/Tilt Sunroof - Input/Output ....... .86 Slide/Tilt Sunroof - Circuit Diagram ......88 Anti-Theft Alarm System (DWA) .
  • Page 6 Subject Page Dynamic Stability Control (DSC) ......105 Junction Box Electronics Control Module (JBE) ....105 Electric Steering Lock (ELV) .
  • Page 7 After completion of this module you will be able to: • Explain distributed functions • Diagnose the various electrical systems • Discuss the operational signal paths of the various systems • Identify the key control modules for each system E90 General Vehicle Electrical...

  • Page 8: Introduction

    With the new 3 Series multiple control modules will be involved in the operation of a sys- tem, similar to the “distributed functions” approach which has been successfully imple- mented on the E60, E63/64, E65 & E66. With the launch of the E90, the distributed function concept will be continued and further developed.
  • Page 9 To date (E46), the "Central Locking" function was located primarily in the General Module (GM) or, on the E60 in the Basic Body Module (KBM) and the door modules. The "Central Locking" function in the E90 is distributed over several control modules (Car Access System, Junction Box Electronics Control Module & Footwell Module).

  • Page 10: Primary Control Modules

    • Controller of Wipe/Wash functions, Heated Washer Jets, Seat Heating, Mirror Heating, Water Valve, Relay 30g_f, Rear Power Windows, Rear Window Sun Shade • Locking & Unlocking of complete vehicle • Pass-through for Outside Temp Sensor E90 General Vehicle Electrical...
  • Page 11 Index Explanation Index Explanation Connection to Main Wiring Harness (54-pin) Direct contact to Power Distribution Box (23-pin) Connection to Instrument Cluster (54-pin) Connection to Main Wiring Harness (47-pin) E90 General Vehicle Electrical...

  • Page 12: Functions Of Footwell Module

    • Controller of Front Power Windows, Electric Load Shut-down • Activation of Power Window Anti-Trap • Stores the Vehicle Order information Index Explanation Index Explanation Connection to Main Wiring Harness (51-pin) Connection to Instrument Cluster (46-pin) Connection to Main Wiring Harness (51-pin) E90 General Vehicle Electrical...

  • Page 13: Functions Of Roof Function Center

    • Integration point for Passenger Airbag light, Microphone, and Emergency call button Index Explanation Index Explanation Connection to Main Wiring Harness (20-pin) Connection to Main Wiring Harness (4-pin) Connection to Interior Rear View Mirror (20-pin) Connection to Rear Interior Lighting (20-pin) E90 General Vehicle Electrical...

  • Page 14: Functions Of Car Access System

    • Redundant data storage device for Vehicle Order • Storage point for Condition Based Service (CBS) data • Control of KL15 and KL 30g relays Index Explanation Index Explanation Connection to Wiring Harness (42-pin) Ribbon Cable Connector (14-pin) E90 General Vehicle Electrical...
  • Page 15 NOTES PAGE E90 General Vehicle Electrical...

  • Page 16: Car Access System 2 - Input/Output

    Car Access System 2 - Input/Output E90 General Vehicle Electrical...
  • Page 17 Electric Steering Lock (ELV) Positive Supply ELV Telematics Control Unit TCU Remote Control Services FBD ON Relay, Fuel Injectors Remote Control Services ON FBD OUT Holder Remote Control Services OUT START/STOP Button Side airbag, front right E90 General Vehicle Electrical...

  • Page 18: Car Access System 2 - Circuit Diagram

    Car Access System 2 - Circuit Diagram E90 General Vehicle Electrical...
  • Page 19 Electric Steering Lock (ELV) Positive Supply ELV Telematics Control Unit TCU Remote Control Services FBD ON Relay, Fuel Injectors Remote Control Services ON FBD OUT Holder Remote Control Services OUT START/STOP Button Side airbag, front right E90 General Vehicle Electrical...

  • Page 20: Central Locking

    Central Locking On the E90, all doors as well as the trunk lid and fuel filler flap are integrated into the Central Locking System. The central locking can be operated via the following components: • Remote control/identification transmitter • Driver's door lock barrel (door lock) •...

  • Page 21: Car Access System 2 (Cas2)

    JBE. Signal Path: Door contact signals input to FRM; Door status signal from FRM to JBE via K-CAN then forwarded from JBE via K-Can to CAS2. E90 General Vehicle Electrical...

  • Page 22: Unlocking/Locking The Vehicle

    Rear Window Antenna Central Locking, Driver's Door Remote Control Receiver Central Locking,Trunk Lid Car Access System (CAS2) Footwell Module FRM Junction Box Electronics Control Module (JBE) Door Contacts Relay for Central Locking E90 General Vehicle Electrical...

  • Page 23: Unlocking Procedure

    The footwell module evaluates the Hall sensors for the lock barrel in the driver's door. The CAS2 is informed of the change in status via the K-CAN. The CAS2 enables the vehicle unlocking/locking procedure. The JBE initiates the vehi- cle unlocking/ locking procedure. E90 General Vehicle Electrical...

  • Page 24: Locking Button On Vehicle Doors

    The microswitch is routed directly to the CAS2. As soon as the signal of the microswitch goes to low, the CAS2 sends this status to the JBE. In turn, the JBE acti- vates the motor in the lock of the trunk lid. E90 General Vehicle Electrical...

  • Page 25: Special Functions

    On receiving the crash signal, the center-lock button and the remote control receiver are inhibited for the central locking functions. The center-lock button and the remote control receiver are enabled again only after the a change in terminal R OFF/terminal R ON. E90 General Vehicle Electrical...

  • Page 26: Location Of Control Modules

    The signals from the outer trunk lid button and center-lock button are also sent to the JBE and transferred to the CAS2. The remote control receiver is powered by the Junction Box Electronics Control Module. E90 General Vehicle Electrical...

  • Page 27: Components Of Central Locking System

    The mechanical key is integrated in the remote control. Index Explanation Index Explanation Unlock / convenient open button Button for OPEN trunk lid Lock / convenient close button Mechanical key E90 General Vehicle Electrical...

  • Page 28: Center-Lock Button

    Central arrest means that the locking button in the doors is separated mechanically from the central locking drive unit. As a result, the vehicle cannot be opened by pulling the locking button. The Hall sensor for the door contact is additionally integrated in the cen- tral locking drive unit. E90 General Vehicle Electrical...

  • Page 29: Central Locking Drive Units For Truck Lid And Fuel Filler Flap

    Cylinder barrel in trunk lid Bowden cable for emergency release Central locking, trunk lid Bowden cable for cylinder barrel in trunk lid A detailed description of the truck lid emergency release facility is provided in the E90 Owner's Manual. E90 General Vehicle Electrical...

  • Page 30: Central Locking - Inputs/Outputs

    Central Locking - Inputs/Outputs E90 General Vehicle Electrical...
  • Page 31 Central locking, truck lid K-Bus Protocol Bus//K-Bus Button, truck lid, exterior Remote control services FBD ON Central locking, rear driver's side Remote control services ON FBD OUT Door contact, rear driver's side Remote control services OUT E90 General Vehicle Electrical...

  • Page 32: Central Locking - Circuit Diagram

    Central Locking - Circuit Diagram E90 General Vehicle Electrical...
  • Page 33 Central locking, truck lid K-Bus Protocol Bus//K-Bus Button, truck lid, exterior Remote control services FBD ON Central locking, rear driver's side Remote control services ON FBD OUT Door contact, rear driver's side Remote control services OUT E90 General Vehicle Electrical...
  • Page 34 What control modules are involved in activating/deactivating central locking? What modules directly controls/activates the relays for lock/unlocking the vehicle? What module provides information regarding the status of the door contacts? How many remote controls are available? E90 General Vehicle Electrical...

  • Page 35: Comfort Access

    Comfort Access Comfort Access (SA 322) is offered as an option for the E90. "Comfort Access" is a passive access system. This means the vehicle is unlocked by grasping the outer door handle, provided the identification transmitter is located within a radius of no more than approx.

  • Page 36: Control Modules For Comfort Access Function

    K-CAN then forwarded from JBE via K-Can to CAS2. Comfort Access Control Module The Comfort Access Module controls/activates the antennas located on the exterior and interior of the vehicle, plus reads/transfers the data received from the Electronic Outer Door Handle Module to the CAS2. E90 General Vehicle Electrical...

  • Page 37: Electronic Outer Door Handle Module (Tage)

    Car Access System 2 (CAS 2) Body Bus Note: In connection with the comfort access system, the vehicle must activate the identification transmitter by means of a radio signal so that the trans- mitter is registered with the vehicle (authentication). E90 General Vehicle Electrical...

  • Page 38: Passive Entry

    ID transmitter in the vehicle. The CAS2 instructs the Comfort Access control module to again send out the identifier for a valid ID transmitter. The Comfort Access Module sends the request via the interior antennas. E90 General Vehicle Electrical...

  • Page 39: Passive Exit

    The CAS2 checks whether the ID transmitter is valid. Upon successful completion of the check, the CAS2 issues the enable signal to lock the drive units and initiates the steering locking procedure. The JBE activates the central locking drive units. E90 General Vehicle Electrical...

  • Page 40: Special Comfort Access Functions

    The engine cannot be started if the identification transmitter is located in the luggage compartment of the unlocked vehicle. Note: The CAS2 issues the enable signal for starting the engine only when a valid identification transmitter has been detected in the vehicle interior. E90 General Vehicle Electrical...

  • Page 41: Starting Engine Without Id Transmitter

    The vehicle can also be unlocked with the engine running if the engine was started with passive go. When leaving the vehicle, the ID transmitter must also be taken and the vehi- cle locked from the outside. E90 General Vehicle Electrical...

  • Page 42: Components Of Comfort Access System

    Comfort Access Module (CA) fers the data received from the Electronic Park Distance Control Module (PDC) Outer Door Handle Module to the CAS2. E90 General Vehicle Electrical...

  • Page 43: Identification Transmitter

    • Second Stage if the battery is not changed, the voltage monitoring facility initiates a function which saves the data in the ID Transmitter is saved and then ID Transmitter is set/made "inoperable". E90 General Vehicle Electrical...

  • Page 44: Antennas For Comfort Access

    The transmit frequency of the antennas is 125 kHz. All messages that are sent via the antennas are encrypted. Locations of Exterior Antennas The exterior antennas are installed in the following locations on the E90: • Door Handle, Driver's side • Door Handle, Passenger's side •...

  • Page 45: Antenna In Outer Door Handles

    The luggage compartment antenna is of the same design as the interior antenna. The antenna characteristic is laid out such that it covers the entire luggage compartment. Interior Antenna E90 General Vehicle Electrical...

  • Page 46: Electronic Outer Door Handle Module (Tage)

    – Capacitive sensor 1 for unlocking the vehicle – Capacitive sensor 2 for locking the vehicle – A Hall sensor for pulling the outer door handle • Inductive antenna for the exterior • Electronic module for outer door handle and interface for CAS-bus. E90 General Vehicle Electrical...

  • Page 47: Sensors

    CAS2. CAS2 will request that a signal be sent from the external antenna to the ID Transmitter asking for a validation signal. The Comfort Access module switches on the remote control receiver in order to receive the validation signal sent from the ID transmit- ter. E90 General Vehicle Electrical...

  • Page 48: Capacitive Sensor 2

    The monitoring cycle takes place every 40 ms in order to save the vehicle battery. A sig- nal is triggered when the sensor reaches a defined threshold. The electronic outer door handle module detects the signal and switches on the power supply of the Hall sensor for checking purposes. E90 General Vehicle Electrical...

  • Page 49: Lock In Driver's Door & Front Passenger's Door

    Note: If pulled very fast, however, it may be necessary to pull the outer door handle a second time in order to open the door. E90 General Vehicle Electrical...

  • Page 50: Comfort Access - Input/Output

    Comfort Access - Input/Output E90 General Vehicle Electrical...
  • Page 51 TAGE Capacitive Sensor, Driver's Side Terminal 30 TAGE Capacitive Sensor, Driver's Side Remote Control Services FBD ON TAGE Hall sensor, Driver's Side Remote Control Services ON FBD OUT Door Contact Remote Control Services OUT Transponder Coil E90 General Vehicle Electrical...

  • Page 52: Comfort Access - Circuit Diagram

    Comfort Access - Circuit Diagram E90 General Vehicle Electrical...
  • Page 53 TAGE Capacitive Sensor, Driver's Side Terminal 30 TAGE Capacitive Sensor, Driver's Side Remote Control Services FBD ON TAGE Hall sensor, Driver's Side Remote Control Services ON FBD OUT Door Contact Remote Control Services OUT Transponder Coil E90 General Vehicle Electrical...
  • Page 54 What is Passive Entry? How does it work? What is Passive Go? How does it work? What is Passive Exit? How does it work? How many antennas are in the vehicle? Can the ID transmitter be locked in the trunk? If so, how? E90 General Vehicle Electrical...

  • Page 55: Interior Lighting

    Interior Lighting The components installed with the interior lighting system for the E90 are: • Interior Light with Interior Light Switch • Interior Light with Interior Light Switch • Reading Light with Reading Light Button, Driver and Passenger • Top Light, Driver and Passenger •...

  • Page 56: Footwell Module (Frm)

    10 s • Interior lighting button pressed. Switching Off Interior Lighting The FRM receives numerous signals to switch off the interior lighting via the K-CAN or are obtained indirectly by the FRM. E90 General Vehicle Electrical...

  • Page 57: Switch-Off Conditions

    • The brightness level for the locator lighting can be set individually via the rocker switch on the column stalk. • The brightness level for the function lighting is not dimmed and is switched on at full brightness. Index Explanation On-board Computer Button Rocker Switch E90 General Vehicle Electrical...

  • Page 58: Roof Functions Center (Fzd)

    As soon as the CAS2 receives a request to unlock/lock, the signal is checked whether it is valid and belongs to the vehicle. Only if the check is successful will the CAS2 forward the request to lock/unlock via JBE plus activate interior lighting via the FRM. E90 General Vehicle Electrical...

  • Page 59: Interior Lighting Components

    The "interior lighting" function is distributed over several control units that communicate with each other via the K-CAN. . Index Explanation Index Explanation Car Access System2 (CAS2) Junction Box Electronics Control Module (JBE) Footwell Module (FRM) Roof Functions Center (FZD) E90 General Vehicle Electrical...

  • Page 60: Interior Lighting Unit, Front

    Sunroof button Passenger's side microphone for voice recognition system Airbag indicator lamp Reading lamp, front passenger's side with button Interior light with button Reading lamp, driver's side with button Interior lighting unit Cover Emergency call button E90 General Vehicle Electrical...

  • Page 61: Interior Lighting Unit, Rear

    • Cover for ultrasonic interior protection (movement detector) on vehicles with DWA. Index Explanation Top light Cover for ultrasonic interior protection Reading lamp, rear right Rear interior light with button Reading lamp, rear left Interior lighting unit E90 General Vehicle Electrical...

  • Page 62: Interior Lighting - Input/Output (Option)

    Interior Lighting - Input/Output (Option) E90 General Vehicle Electrical...
  • Page 63 Interior lighting control Comfort access CA Remote control services FBD ON Footwell light, driver's side Remote control services ON Interior button for truck lid Remote control services OUT Exit light, driver's side Courtesy light, front and rear E90 General Vehicle Electrical...

  • Page 64: Interior Lighting - Circuit Diagram (Option)

    Interior Lighting - Circuit Diagram (Option) E90 General Vehicle Electrical...
  • Page 65 Interior lighting control Comfort access CA Remote control services FBD ON Footwell light, driver's side Remote control services ON Interior button for truck lid Remote control services OUT Exit light, driver's side Courtesy light, front and rear E90 General Vehicle Electrical...
  • Page 66 Classroom Exercise - Review Questions What is the primary module for controlling the interior lighting functions? What lighting components does the FZD control? How long after the ignition is switched off are the interior lights shut down? E90 General Vehicle Electrical...

  • Page 67: Power Windows

    Power Windows The Power Window functions available in the E90 are: • Opening and closing • Opening and closing with toll function • Convenient opening and closing • Indirect anti-trapping protection • Panic mode • Load shut-down at terminal 50 •...

  • Page 68: Car Access System 2 (Cas2)

    The power window motor moves the window automatically until it is completely open or closed. Power window operation is stopped when the power window switch is pressed or pulled again. E90 General Vehicle Electrical...

  • Page 69: Switch Cluster, Driver's Door

    Power Window Switch in Driver's Door switch cluster LIN-Bus Lin-Bus SBFA K-CAN Footwell Module (FRM) Bodyshell CAN Kl. 30g Car Access System 2 (CAS 2) Terminal 30g Kl. 58g Junction Box Electronics Control Module (JBE) Terminal 58 g Power Window Motor E90 General Vehicle Electrical...

  • Page 70: Convenient Opening And Closing

    The convenient opening or closing function is initiated when the key is held in this position. The FRM sends the request via the K-CAN. On conclusion of the corresponding check, the CAS2 initiates the convenient opening or closing procedure. E90 General Vehicle Electrical...

  • Page 71: Convenient Closing With Comfort Access

    Junction Box Electronics Control Module. The indirect anti-trapping function in the E90 is based on the evaluation of the hall pulses from the power window motors. The speed is derived from the Hall pulses of the power window motors.

  • Page 72: Load Shut-Down, Terminal 50

    The thermal protection function does not prevent the windows from being opened in the case of trapping. Once started, a power window function is not interrupted by the ther- mal protection facility. In panic mode the window can still be closed even when the thermal protection function is active. E90 General Vehicle Electrical...

  • Page 73: Controls

    Signal evaluation of the power switches is summarized in the following table. Driver’s Door Switch Cluster Door Switches Passenger's Passenger's Driver's Side Left Rear Right Rear Left Rear Right Rear Side Side Direct Link to ------ ------ ------ ------ Connection via ------ ------ ------ LIN-Bus to: E90 General Vehicle Electrical...

  • Page 74: Remote Control

    Initialization via the BMW Diagnostic Equipment The power windows can be initialized as part of an initialization procedure using the BMW diagnostic equipment. A detailed description of the initialization procedure is pro- vided in the BMW diagnosis system. E90 General Vehicle Electrical...
  • Page 75 NOTES PAGE E90 General Vehicle Electrical...

  • Page 76: Power Window - Input/Output

    Power Window - Input/Output E90 General Vehicle Electrical...
  • Page 77 Local interconnected network bus Power window motor with indirect anti-trapping Remote control services function, rear left Remote control Remote control services ON Rear window antenna Remote control services OUT CAS- Remote control receiver K-Bus (K-Bus protocol Comfort Access (CA) E90 General Vehicle Electrical...

  • Page 78: Power Window - Circuit Diagram

    Power Window - Circuit Diagram E90 General Vehicle Electrical...
  • Page 79 Local interconnected network bus Power window motor with indirect anti-trapping Remote control services function, rear left Remote control Remote control services ON Rear window antenna Remote control services OUT CAS- Remote control receiver K-Bus (K-Bus protocol Comfort Access (CA) E90 General Vehicle Electrical...
  • Page 80 What module controls the relays for the rear windows? What is the role of the CAS2 module in the operation of the power windows? How is information from the driver’s door switch cluster transferred to the FRM? E90 General Vehicle Electrical...

  • Page 81: Slide/Tilt Sunroof

    • Load cut-out during start procedure • Terminal 58g • Initialization Control Modules for Sunroof Operation Index Explanation Index Explanation Car Access System2 (CAS2) Roof Function Center (FZD) Footwell Module (FRM) Comfort Access (CA) Junction Box Electronics Control Module (JBE) E90 General Vehicle Electrical...

  • Page 82: Car Access System 2 (Cas2)

    Outer Door Handle The convenient closing function can be triggered by touching the sensitive area of the outer door handle. E90 General Vehicle Electrical...

  • Page 83: Slide/Tilt Sunroof Motor

    The FZD receives this information and adopts the set value for the instrument lighting. The LED in the button for the slide/tilt sunroof is activated, pulse width-modulated by the FZD. This achieves a constant brightness of the LED even under fluctuating system volt- age conditions. E90 General Vehicle Electrical...

  • Page 84: Control

    • The slide/tilt sunroof is closed after 5 s in the "tilt" position • The sunroof is then opened and the end position stored • The sunroof is then closed and the end position stored Time required for initialization approx. 120 s. E90 General Vehicle Electrical...

  • Page 85: Interruption In Power Supply

    The initialization is deleted under the following circumstances: • Failure of the supply voltage during initialization • Hall sensor fault detected • Position implausible • Certain instructions in the diagnosis • Modified/changed vehicle coding • Coding data faulty E90 General Vehicle Electrical...

  • Page 86: Slide/Tilt Sunroof - Input/Output

    Slide/Tilt Sunroof - Input/Output E90 General Vehicle Electrical...
  • Page 87 Door Contact Terminal 58g CAS-Bus/K- Junction Box Electronics Control Module K-Bus Protocol (JBE) Identification Transmitter Remote control services FBD ON Rear Window Antenna Remote control services ON FBD OUT Remote Control Receiver Remote control services OUT E90 General Vehicle Electrical...

  • Page 88: Slide/Tilt Sunroof - Circuit Diagram

    Slide/Tilt Sunroof - Circuit Diagram E90 General Vehicle Electrical...
  • Page 89 Door Contact Terminal 58g CAS-Bus/K- Junction Box Electronics Control Module K-Bus Protocol (JBE) Identification Transmitter Remote control services FBD ON Rear Window Antenna Remote control services ON FBD OUT Remote Control Receiver Remote control services OUT E90 General Vehicle Electrical...
  • Page 90 Classroom Exercise - Review Questions What module controls the operation of the slide/tilt sunroof motor? What function does the FRM provide in the operation of the sunroof? E90 General Vehicle Electrical...

  • Page 91: Anti-Theft Alarm System (Dwa)

    DWA LED. Ultrasonic Passenger Compartment Sensor (USIS) Ultrasonic Passenger Compartment Protection System has been adopted from the E65 and adapted to the E90. The function of the anti-theft alarm system is integrated in the USIS. E90 General Vehicle Electrical...

  • Page 92: Footwell Module (Frm)

    3 sec. after they have signaled the "closed" status Faulty contacts are entered in the information memory and interpreted as closed but not adopted in the alarm table. They are not included in the evaluation for alarm triggering. E90 General Vehicle Electrical...

  • Page 93: Deactivating Tilt Alarm & Usis

    The DWA LED flashes for 5 min if an alarm was triggered during the time the anti-theft alarm system was armed. If the system is disarmed during the alarm, the action is not acknowledged but rather the alarm is terminated. E90 General Vehicle Electrical...

  • Page 94: Unlocking The Luggage Compartment

    Ultrasonic Passenger Compartment/Tilt Alarm (USIS) Lights for 2 s then continues flashing Sensor OFF Alarm Triggered Blinks for 5 min then continues flashing Deactivation Goes off Deactivation After Alarm Blinks for 5 min or is interrupted when "remote control inserted" E90 General Vehicle Electrical...

  • Page 95: Feedback Via Emergency Current Siren

    In addition to automatically opening the trunk lid, the Anti-theft alarm system outputs an audible warning. The warning comprises a triple double-tone of the emergency current siren. E90 General Vehicle Electrical...

  • Page 96: Alarm Trigger

    The USIS senses and evaluated movements in the vehicle interior. The initialization procedure for the USIS is started 3 s after closing the hood, trunk lid and last door. The USIS is operational 20 s after initialization and is adopted in the alarm table. E90 General Vehicle Electrical...

  • Page 97: Tilt Alarm Sensor

    Anti-theft alarm system triggers an alarm. The line monitoring facility is also active while the alarm is triggered. The anti-theft alarm system measures the system voltage. To avoid false alarms, the line monitoring facility is switched off at a system voltage below 9 V. This avoids false alarms. E90 General Vehicle Electrical...

  • Page 98: Alarm Output

    The emergency current cycle triggers the self contained/integrated alarm if its lines are tampered with. If the DWA bus is also cut through, the USIS detects this situation by the absence of the reply from the emergency current siren. In turn, USIS triggers the visual alarm. E90 General Vehicle Electrical...

  • Page 99: Panic Mode

    An alarm triggered for test purposes or inadvertently can be terminated by disarming the anti-theft alarm system or by inserting the remote control in its holder. The alarm is termi- nated immediately. No audible or visual feedback is output. E90 General Vehicle Electrical...

  • Page 100: Anti-Theft Alarm System - Input/Output

    Anti-Theft Alarm System - Input/Output E90 General Vehicle Electrical...
  • Page 101 Ultrasonic Passenger Compartment Kl. 31 Terminal 31 Protection (USIS) Anti-Theft Alarm System DWA-LED Remote Control Services FBD ON Identification Transmitter Remote Control Services ON FBD OUT Rear Window Antenna Remote Control Services OUT Remote Control Receiver E90 General Vehicle Electrical...

  • Page 102: Anti-Theft Alarm System - Circuit Diagram

    Anti-Theft Alarm System - Circuit Diagram E90 General Vehicle Electrical...
  • Page 103 Ultrasonic Passenger Compartment Kl. 31 Terminal 31 Protection (USIS) Anti-Theft Alarm System DWA-LED Remote Control Services FBD ON Identification Transmitter Remote Control Services ON FBD OUT Rear Window Antenna Remote Control Services OUT Remote Control Receiver E90 General Vehicle Electrical...

  • Page 104: Electronic Steering Lock (Elv)

    Since its initial introduction the system has been revised and was recently introduced on the E87 (available in Europe) plus will be available with the E90 as well. The purpose of feature is to electrically lock and unlock the steering column.

  • Page 105: Dynamic Stability Control (Dsc)

    When CAS2 supplies a signal to the ELV a ground connection is applied first then power, the opposite occurs when the signal is removed. No power is applied to the ELV when the vehicle is not moving. E90 General Vehicle Electrical...

  • Page 106: Unlocking The Steering

    The steering wheel must be turned back and forth if this is not the case. The motor is again driven three times. A Hall sensor registers the end position of the secured lock pin. The ELV module evalu- ates the Hall sensor and stops motor operation. E90 General Vehicle Electrical...

  • Page 107: Feedback

    The CAS2 switches on the ELV module. The Hall sensor of the electric steering lock is then checked along with the “lock” conditions. On successful completion of the check, the CAS2 issues the enable signal to lock the steering. E90 General Vehicle Electrical...

  • Page 108: Locking The Steering

    This status is sent to the CAS2 which stores the status of the ELV. Switching off the ELV control module The CAS2 receives the request to shut down with the last telegram from the ELV module. E90 General Vehicle Electrical...

  • Page 109: Electric Steering Lock (Elv) - Circuit Diagram

    Redundant Speed Signal K-CAN Electric Steering Lock (ELV) Bodyshell CAN PT-CAN ELV Motor Powertrain CAN CAS-Bus Hall Sensor ELV K-Bus based on K-bus protocol Kl. 15 Power Stage for Power Supply + Terminal 15 Power Stage E90 General Vehicle Electrical...

  • Page 110: Elv Mechanism

    (locking lever) keeps the unlocked locking pin in position when no power is applied to the ELV. Index Explanation Index Explanation Locking Pin Pressure Plate Driver with Worm Gearwheel with Control Contour Electric Motor with Pin Spring Locking Lever E90 General Vehicle Electrical...

  • Page 111: Locking Procedure

    From the "unlocked" position, the electric motor (7) begins to turn the gearwheel with controlled steps (3) and releases lock mechanism/lever. The drive carrier with worm gear (2) is blocked by the locking lever (8). The nut (6) now begins to rotate. E90 General Vehicle Electrical...
  • Page 112 The nut (6) moves on the worm towards the locking lever (8). The locking lever (8) is now rotated by the control contour so that the drive carrier with worm (2) and locking pin (1) snap in position. E90 General Vehicle Electrical...
  • Page 113 The locking pin (1) is snapped into place with the mechanism in the locked position. The locking lever (8) rests on the drive carrier. E90 General Vehicle Electrical...
  • Page 114 How is the steering locked/unlocked ? What signals are required to initiate a lock sequence ? How are the signals to the ELV controlled (refer to schematic on DISplus/GT1) What happen on the pins of the ELV? E90 General Vehicle Electrical...

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