BMW 3-series convertible Complete Vehicle Workbook
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BMW 3-series convertible Complete Vehicle Workbook

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E93 Complete Vehicle Workbook
Subject
E93 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
E93 Body Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Body Reinforcements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
E93 Electronic Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
General Vehicle Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Exterior Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Interior Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Central Locking System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Glove Compartment Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Opening Glove Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Closing Glove Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Locking Glove Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Emergency Release of Glove Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Locking Function of Center Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Emergency Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Anti-theft Alarm System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Power Seats with Easy Entry Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Changes to Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Junction Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Footwell Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Car Access System (CAS3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Power Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Initial Print Date: 04/07
Revision Date:
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Summary of Contents for BMW 3-series convertible

  • Page 1: Table Of Contents

    Table of Contents E93 Complete Vehicle Workbook Subject Page E93 Introduction ..................7 E93 Body Construction .
  • Page 2 Table of Contents Subject Page Information and Communication Technology ..............24 Changes in the Setup Menu .
  • Page 3 Table of Contents Subject Page Triggering the Rollbars ................46 Triggering the RPS via Diagnosis .
  • Page 4 Table of Contents Subject Page Closure Cylinders ..................86 Roof Panel Cylinders .
  • Page 5 Table of Contents Subject Page BLANK PAGE...
  • Page 6 E93 Complete Vehicle Workbook Complete Vehicle Workbook Model: E93 Production: From Start of Production After completion of this module you will be able to: • Understand the changes to the E93 electrical and entertainment systems • Diagnose and service systems on the E93 •...

  • Page 7: E93 Introduction

    E93 Introduction The new E93 is the latest in a long line of 3-series convertibles Dimensions/Weights Difference from BMW starting with the E30. Since then, the 3-series convertible has evolved from a cloth top to the current retractable Length 4,580 mm...

  • Page 8: E93 Body Construction

    E93 Body Construction Index Explanation Index Explanation As with all current BMW models, there is an extensive use of high strength steels. DC 03/04 HC 600 C There is an “intelligent mix” of materials to provide the lightest HC 180 BD/HC 220 BD 22 Mn B5, Docol 1000 DP possible weight with the best possible strength.

  • Page 9: Body Reinforcements

    Body Reinforcements As with previous convertibles, additional reinforcement is added to Index Explanation Index Explanation supplement the rigidity of the body structure. Diagonal strut, engine The additional struts consist of: Underbody strut, rear compartment • Front end struts Front axle subframe struts Strut in rollover protection •...

  • Page 10: E93 Electronic Systems

    E93 Complete Vehicle Workbook E93 Electronic Systems...
  • Page 11 What has changed regarding the wiring of the SINE and FZD? Workshop Exercise - Bus System Changes Using the bus chart and classroom posters for comparison, answer the following questions. What has changed on the LIN-bus? And Why? Which bus connects the microwave sensors to the SINE? Has anything changed in the diagnostic connection? What three modules are connected to the K-bus? What new modules are on the MOST bus?

  • Page 12: General Vehicle Electrical

    E93 Complete Vehicle Workbook General Vehicle Electrical The general vehicle electrical system includes the following: • Exterior lighting • Interior lighting • Central locking system • Anti-theft alarm system • Roof functions module • Seat with rear easy-entry • Changes in control units •...
  • Page 13 Interior Light Schematic Index Explanation Index Explanation Exit light, left Glove compartment lighting Door contact, left Vanity mirror light right Courtesy lighting, left Switch for vanity mirror light, right Fiber optic cable for left Charging socket door linear lighting Footwell module Side panel linear lighting, right Rear compartment footwell light, Footwell light, front left...

  • Page 14: Central Locking System

    E93 Complete Vehicle Workbook Central Locking System The central locking system has been adapted to the specific requirements of the Convertible. In addition to the basic functions of locking the doors, lids and flaps, two further functions have been added: automatic locking and opening of the glove compartment and the storage compartment in the center console.
  • Page 15 Index Explanation Index Explanation Hotel switch Knee airbag, front passenger Microswitch, open Unlocking motor with actuating cam Lock with emergency release Glove compartment housing Locking rod, left Locking rod, right E93 Complete Vehicle Workbook...

  • Page 16: Locking Function Of Center Console

    E93 Complete Vehicle Workbook Locking Function of Center Console The storage compartment, contains an actuator motor which locks the storage compartment. This actuator motor is driven directly by the junction box when central arrest is activated. Emergency Release The storage compartment in the center console can be released by means of a pull cable in the event of the battery discharging or being defective.
  • Page 17 Central Locking Schematic Index Explanation Driver’s door with actuator, door contact and door lock with Hall sensors Footwell module Central lock button Junction box Glove compartment actuator motor Hotel switch Passenger’s door with actuator and door contact Actuator for fuel filler flap Comfort access control unit Trunk lid button Trunk lid lock...

  • Page 18: Anti-Theft Alarm System

    E93 Complete Vehicle Workbook Anti-theft Alarm System The anti-theft alarm system in the E93 Convertible is identical to that in the 3 Series Sedan in terms of its basic functions and operating mode. There are differences in the interior monitoring function and connection to the system network. Microwave sensors, as in the E64 Convertible, are used for the interior monitoring system instead of ultrasonic sensors.
  • Page 19 Anti-Theft Alarm Schematic Index Explanation Hood contact Car Access System Interior rear-view mirror with remote control receiver and DWA LED Junction box Passenger’s door contact Microwave sensor, front right Microwave sensor, rear right Siren with tilt alarm sensor Boot lid contact, right Boot lid contact, left Microwave sensor, rear left Microwave sensor, front left...

  • Page 20: Power Seats With Easy Entry Function

    E93 Complete Vehicle Workbook Power Seats with Easy Entry Function The position of the headrest is detected by a Hall sensor on the Special seats with a seat-integrated seat belt system as in the headrest adjustment motor. The seat moves back and assumes E46/E64 are installed in the E93 Convertible.
  • Page 21 NOTES PAGE E93 Complete Vehicle Workbook...

  • Page 22: Changes To Control Modules

    E93 Complete Vehicle Workbook Changes to Control Modules Various changes have been made to the control units in order to incorporate functions specific to the Convertible. Brief descriptions of the changes are provided in the following. Roof Functions Module (FZD) The roof functions module has been adapted in terms of its functionality and geometric form to the specific requirements of the E93 Convertible.

  • Page 23: Junction Box

    (1), with which all windows can be lowered simultaneously. As a standard feature on BMW Convertibles, the side windows are frame-less. The windows must enter the door seal by several millimeters in order to avoid leaks and wind noise.

  • Page 24: Information And Communication Technology

    E93 Complete Vehicle Workbook Information and Communication Technology Favorites Button for CCC / MASK Eight additional favorites button have been added to the two Several changes have been made to the iDrive in connection with options navigation system Business with MASK and navigation the launch of the E93 Convertible as from 03/07.
  • Page 25 Index Explanation Index Explanation Slot in DVD player Eject button, CD player Favorites buttons Rocker switch for station selection, CD Rotary push button Eject button, DVD player Slot in CD player E93 Complete Vehicle Workbook...

  • Page 26: Interface Box (High)

    E93 Complete Vehicle Workbook Interface Box (High) The US vehicle will receive a high variant of the interface box, the SBX High contains the following functions: • Pairing of customer mobile phone to the vehicle via Bluetooth ® interface • Voice-activated control of the telephone or expanded voice- activated control in connection with the Assist/Bluetooth ®...
  • Page 27 The alarm system on the E93 monitors the interior using: Classroom Exercise - Review Questions (circle the correct answer) Ultrasonic sensors As compared to the E46iC, the E93 is: (circle all that apply) Flux capacitors Longer Lighter Heavier Wider Microwave sensors Taller Shorter Narrower...

  • Page 28: Antenna Systems

    E93 Complete Vehicle Workbook Antenna Systems Since the standard locations for antennas on the roof or in the fixed rear window are not available on the E93 Convertible, the various antenna systems are distributed and integrated in the vehicle. Antennas are required for the following systems: •...

  • Page 29: Am And Fm 1 Antenna, Left

    The FM2 and FM4 antennas are located behind the rear bumper panel. The antenna amplifiers for the FM2 and FM4 antennas are located in the antenna diversity module on the rear left in the luggage compartment. Index Explanation Antenna amplifier, left Emergency antenna FM3 Antenna, right The FM3 antenna is located in the right side trim panel at the rear.

  • Page 30: Fm Antenna Diversity

    E93 Complete Vehicle Workbook FM Antenna Diversity The IF is evaluated by the electronic circuitry in the diversity module and is a copy of the radio station currently heard on the The E93 Convertible features a four FM antenna diversity module fixed frequency of 10.7 MHz.
  • Page 31 Diversity Module Index Explanation Index Explanation FM2 and FM4 antenna input RF signals, rear window Power supply for external antenna amplifiers RF signal of FM3 and input, KL30g Signal from CTM and Radio ON RF signal of AM/FM1 RF signal for radio navigation Changeover voltage/diagnosis E93 Complete Vehicle Workbook...

  • Page 32: Antenna Diagnosis

    BMW3 Series (E90, E91, E92). Self-diagnosis of the diver- supplies the antenna amplifier and diversity module with voltage. sity module is initiated in the diagnosis module of the BMW diag- nosis system. This procedure must be carried out with the hardtop up and down in order to check all antennas.

  • Page 33: Radio Interference

    The E93 supports the following concepts for minimizing interfer- ence in the reception of AM and FM stations: “Us” “Us” “Us” Operating Mode Remark typical • Ground connection of rear lid via read lid hinge with integrated ground straps 0.5 V due FM1/AM ---- AM reception, diversity off...
  • Page 34 E93 Complete Vehicle Workbook Schematic for Antenna Systems Index Explanation Car Access System Remote control receiver in interior rear view mirror Junction box Rejector circuit, negative FM3 antenna with amplifier in right hand shoulder trim Comfort Access Convertible Top Module FM2 antenna in bumper FM4 antenna in bumper FM antenna diversity module...
  • Page 35 Schematic for SDARS and IBOC Index Explanation Junction box Rejector circuit, negative FM3 antenna with amplifier in right hand shoulder trim Convertible Top Module FM2 antenna in bumper SDARS antenna on rear lid SDARS receiver (satellite tuner) IBOC receiver (digital radio tuner) FM4 antenna in bumper FM antenna diversity module AM/FM1 antenna with amplifier in left hand shoulder trim...

  • Page 36: Antennas For Digital Receivers

    E93 Complete Vehicle Workbook Antennas for Digital Receivers Telephone Antenna The telephone antenna is The SDARS system has the only externally visible antenna on the located under the side panel E93. The “shark fin” style antenna is mounted on the trunk lid on on the front left.

  • Page 37: Sos Antenna

    SOS Antenna GPS Antenna The SOS antenna (2) is A GPS antenna is necessary for the telematics function for the pur- activated if the emergency call pose of automatic emergency call with location. On vehicles with function is no longer possible MASK/CCC navigation system, the GPS antenna is routed directly via the telematics antenna to the navigation computer.

  • Page 38: Arrangement And Location Of Ikt Components

    E93 Complete Vehicle Workbook Arrangement and Location of IKT Components Index Explanation Telematics control unit (TCU) IBOC tuner (HD radio) HiFi or Top HiFi amplifier CD changer Auxiliary fan for SDARS tuner SDARS tuner...
  • Page 39 NOTES PAGE E93 Complete Vehicle Workbook...

  • Page 40: Passive Safety Systems

    E93 Complete Vehicle Workbook Passive Safety Systems In the same way as the Sedan, the E93 Convertible offers vehicle safety at the highest level for all occupants as well as in all crash situa- tions. Numerous reinforcements have been implemented in the body for the purpose of conforming to worldwide stipulations relating to a uniform body.

  • Page 41: Advanced Crash And Safety Management

    Advanced Crash and Safety Management Together with the transverse acceleration sensor in the crash safety The E93 Convertible is equipped with the second generation module, the transverse acceleration sensors serve to detect side-on crashes. Door pressure sensors are additionally installed in advanced crash and safety management system (ACSM2).
  • Page 42 E93 Complete Vehicle Workbook ACSM2 Schematic Index Explanation Index Explanation Up front sensor, left B-pillar satellite, right Driver’s airbag Battery Front passenger airbag Safety battery terminal Up front sensor, right Actuator, right roll bar Junction box Rollover controller Knee airbag passenger’s side Actuator, left roll bar CAS 3 B-pillar satellite...

  • Page 43: System Components

    System Components Crash Safety Module The crash safety module is located centrally on the transmission Advanced crash and safety management in the E93 Convertible tunnel in the vehicle. The crash safety module consists of a essentially comprises the following components: diecast housing with integrated plug cover.

  • Page 44: Roc Control Unit

    E93 Complete Vehicle Workbook ROC Control Unit Airbag Systems In the E93 Convertible, advanced crash and safety management is In addition to the known two-stage driver's and passenger's airbag, equipped with an additional ROC control unit (rollover controller). newly designed side airbags are used in the E93. The side airbags The ROC control unit is connected via a K-bus to the crash safety are integrated in the backrest of the SGS seat.

  • Page 45: Rollover Protection System

    Rollover Protection System Rollover Detection The E93 Convertible has a special sensor system in the crash The rollover protection system is of vital importance to the passive and safety module ACSM2 for the purpose of detecting rollover safety of the E93 Convertible. The rollover protection system helps situations.

  • Page 46: Triggering The Rollbars

    E93 Complete Vehicle Workbook The two Low-g sensors (3) have a small measuring range of 0-2 g The second telegram contains the firing command (firing telegram). and can therefore detect small accelerations and decelerations with The low-side power circuit-breakers (6) are connected to ground great accuracy.

  • Page 47: Triggering The Rps Via Diagnosis

    The locking pawls on the rollbar press the toothed rack back Mechanical Emergency Release mechanically as the bar extends. When the protection bar is The rollover protection system should be triggered if it has to be extended, the locking pawls are supported on the tooth strip. removed for repair work.

  • Page 48: Automatic Climate Control

    IHKA system with less than occupants. accurate information. Also, the “ram air pressure compensation” feature in BMW IHKA systems is not desirable when the top is down. This situation forces the driver to continually adjust the temperature and blower controls for maximum comfort.

  • Page 49: Convertible Mode Control

    Convertible Mode Control The most comfortable conditions are achieved with the side win- The aim of Convertible mode is to create an automatic program dows closed and a wind deflector additionally installed. that renders manual intervention by the driver or passenger unnec- The ram pressure compensation that serves the purpose of keep- essary.
  • Page 50 E93 Complete Vehicle Workbook List the location of the antenna amplifiers for the listed Classroom Exercise - Review Questions antennas: FM1 (rear window) Match the antenna location (illustration) to the antenna description: FM1 (left trim) A. FM1 B. FM2 C. FM3 D. FM4 E. AM FM2 (bumper) FM3 (right trim) FM4 (bumper)
  • Page 51 NOTES PAGE E93 Complete Vehicle Workbook...

  • Page 52: Retractable Hard Top (Rht)

    E93 Complete Vehicle Workbook Retractable Hard Top (RHT) For 2007, the new 3-series convertible has a retractable hard top E93 RHT Features: featuring all steel panels. Advantages of the steel panel design • All steel construction including trunk lid include: •...

  • Page 53: Hard Top Operation

    Hard Top Operation The RHT consists of three steel panels which fold up into a roof “package”. This roof package can then be stowed into a space designated in the trunk. The steel roof panels continue to use the interior headliner as used on past convertibles.

  • Page 54: Conditions For Operation

    E93 Complete Vehicle Workbook Conditions for Operation As with previous convertibles there are a set of preconditions which must be met before top operation can be carried out. The following represents the preconditions for operation:...
  • Page 55 Workshop Exercise - Preconditions for top operation Complete the chart below using the ETM and diagnostic equipment. Visual indication Precondition Specification Signal origin/path Type of signal (to driver) Terminal R Outside Temperature Trunk Lid Road Speed Power Window (initialization) Luggage compartment divider Lateral inclination Battery voltage...

  • Page 56: Switch Operation

    E93 Complete Vehicle Workbook Switch Operation The RHT is operated by a switch in the center console. The switch provides a ground input to the CTM for top operation. The movement of the hard top is carried out as long as the switch is actuated.
  • Page 57 Workshop Exercise- Sequence of operation Using the actual vehicle as a guide, operate the top through the opening and closing operations. Note the sequence and complete the exercise below by numbering the illustrations below in the correct order starting with the top open. Operate the RHT using the center console switch and note the status of the LED’s in the switch.

  • Page 58: Convenience Operation

    E93 Complete Vehicle Workbook Convenience Operation Other than the switch in the center console, the RHT can be operated via convenience functions. These functions include: • Via the remote control/ID sensor (with Comfort Access only) • Via the door lock with the mechanical key (open/close) By holding the unlock button, the By holding the lock button, the RHT The RHT can also be operated by the...

  • Page 59: Convenience Loading And Unloading

    Convenience Loading and Unloading When the RHT is open and there is a need for access to the luggage compartment, a convenience loading/unloading feature has been added. This allows quick access to the luggage compartment without completely closing the hard top. As with the other convenience features, this is only available with Comfort Access.

  • Page 60: Soft Close Automatic (Sca)

    E93 Complete Vehicle Workbook Soft Close Automatic (SCA) For convenient closing of the boot lid, the Soft Close Automatic is installed as standard. It consists of two Soft Close Automatic drives that lock the boot lid to the rear module carrier on the left and right. This increases the stability of the boot area. Opening the Boot Lid When the boot lid is opened using the boot lid button, a microswitch is actuated and its status is read by the junction box JB.
  • Page 61 Index Explanation Index Explanation “Left trunk lid lock” microswitch “Right SCA drive” Drive for central locking of the trunk lid Control cable for mechanical unlocking of the trunk lid Control cable for unlocking the right trunk lid lock Release lever “Right boot lid lock”...

  • Page 62: Mechanical Components

    E93 Complete Vehicle Workbook Mechanical Components The RHT is a roof system which consists of a three piece sheet steel design. The roof system withstands speeds up to 167 mph (270 km/h) and has a sophisticated water management system for draining remaining water when the roof is extended or retracted. Aerials (AM/FM) are integrated into the bonded rear window.
  • Page 63 Index Explanation Index Explanation Roof mechanism Roof module main mount Rear mechanism carrier bar Closure Rear module main mount E93 Complete Vehicle Workbook...

  • Page 64: Roof Module

    E93 Complete Vehicle Workbook Roof Module The roof module consists of 3 roof panels, linkage, main mount and the hydraulics. The movement sequence of the retractable hardtop is driven by a central hydraulic system with hydraulic 8-cylinder activation, with an additional 2 gas pressure dampers in the main mount. A total of 8 hydraulic cylinders and 6 gas pressure dampers are used in the retractable hardtop.

  • Page 65: Rear Module

    Rear module The trunk lid and hardtop lid are integrated into the rear module. The rear module is fastened to the body using a supporting bar structure with main mount. The rear module weighs about 105 lbs. The trunk lid is equipped with Soft Close Automatic. Index Explanation Index...

  • Page 66: Water Management

    E93 Complete Vehicle Workbook Water Management The water flows from the roof channel into a water drain through a duct system with valve on the main guide bar. When the retractable hardtop is stowed while wet, any remaining water droplets are collected in the side storage trays and the channel in the boot sill panel, where they can evaporate.
  • Page 67 Index Explanation Index Explanation Water hose Water drain Water valve E93 Complete Vehicle Workbook...

  • Page 68: Drive For Hardtop Locking

    E93 Complete Vehicle Workbook Drive for Hardtop Locking The roof panels of the hardtop are interlocked. In addition, the front roof panel is locked at the cowl panel via two catch hooks. The electro-motor installed in the center of the front roof panel serves as the drive. The electric motor is activated directly by the CTM. Index Explanation Index...

  • Page 69: Locking Sequence

    Locking Sequence By means of these elements and flexible rods, the force is transmit- When the front roof shell has reached the cowl panel, the electric ted to the locking bolts of roof panels 2 and 3. motor is activated. While the drive cables are being driven, the connecting rods are The left and right drive cables are driven via the gear wheel on the simultaneously activated via the control disk.
  • Page 70 E93 Complete Vehicle Workbook Use special tools to unlock rear module. Workshop Exercise - Emergency Operation Open rear module by hand, lift from center of rear module taking care not to damage plastic covers. With the proper repair instructions and instructor guidance, perform the emergency closing procedure.
  • Page 71 Which control module operates the drive motor in the first Classroom Exercise - Review Questions roof panel? What does a “blinking” red LED indicate on the RHT switch? How is the “convenience loading” feature initiated? And, how is is completed? How will the driver know if the luggage compartment divider is not fully down? The drive motor of the RHT is responsible for locking...

  • Page 72: Electrical Components

    E93 Complete Vehicle Workbook Electrical Components In certain critical situations, the CTM triggers introductions that are easily understandable to the Convertible Top Module customer in the instrument cluster The Convertible top module (CTM) is the central electronic control as check control messages and module for all functions of the retractable hardtop.
  • Page 73 Workshop Exercise - Hall Sensors and Microswitches Using the available reference material and class vehicle, identify and locate all microswitches and Hall sensors on the vehicle. Complete the exercise by filling in the chart below with the correct sensor/switch terminology. Index Explanation Index...

  • Page 74: Microswitch And Hall Sensor Locations

    E93 Complete Vehicle Workbook Microswitch and Hall Sensor Locations “Roof shells partially open” “Roof shells partially closed” “Catch hooks locked” microswitch “Cowl panel reached” microswitch “Catch hooks unlocked” microswitch Hall Sensor This microswitch is built into the left cowl These two hall sensors are located on the right Both of these microswitches are located below panel on the vehicle.
  • Page 75 “Rear module open” Hall sensor “Luggage compartment divider” “Roof package stowed” Hall sensor “Rear module almost closed Hall sensor Hall Sensor This Hall sensor is located on the partition for the Both of these Hall sensors are located on the This Hall sensor is located on the right hand rear RPS, on the right hand side right hand rear module cylinder...
  • Page 76 E93 Complete Vehicle Workbook Workshop Exercise - Sensors and Switches Complete the chart below by filling in the required information on the status of the RHT. The status of the top is shown at the right. Place the top in this position and use the diagnostic equipment to access the required information (i.e.
  • Page 77 Workshop Exercise - Sensors and Switches Complete the chart below by filling in the required information on the status of the RHT. The status of the top is shown at the right. Place the top in this position and use the diagnostic equipment to access the required information (i.e.
  • Page 78 E93 Complete Vehicle Workbook Workshop Exercise - Sensors and Switches Complete the chart below by filling in the required information on the status of the RHT. The status of the top is shown at the right. Place the top in this position and use the diagnostic equipment to access the required information (i.e.
  • Page 79 Workshop Exercise - Sensors and Switches Complete the chart below by filling in the required information on the status of the RHT. The status of the top is shown at the right. Place the top in this position and use the diagnostic equipment to access the required information (i.e.
  • Page 80 E93 Complete Vehicle Workbook Workshop Exercise - Sensors and Switches Complete the chart below by filling in the required information on the status of the RHT. The status of the top is shown at the right. Place the top in this position and use the diagnostic equipment to access the required information (i.e.
  • Page 81 Workshop Exercise - Sensors and Switches Complete the chart below by filling in the required information on the status of the RHT. The status of the top is shown at the right. Place the top in this position and use the diagnostic equipment to access the required information (i.e.
  • Page 82 E93 Complete Vehicle Workbook Hard Top System Schematic Index Explanation Index Explanation “Rear module open” Car Access System (CAS 3) Hall sensor “Rear module almost closed” “Cowl panel reached” micro switch Hall sensor “Roof package stowed” “Catch hook locked” micro switch Hall sensor “Rear module closed”...
  • Page 83 NOTES PAGE E93 Complete Vehicle Workbook...

  • Page 84: Hydraulic Components

    E93 Complete Vehicle Workbook Hydraulic Components The retractable hardtop and the rear module are driven hydraulically. The hydraulic system consists of 8 hydraulic cylinders that are supplied with pressure by the hydraulic system via the hydraulic lines. The cylinders are always activated in pairs. The hydraulic assembly is installed in a recess in the luggage compartment floor.

  • Page 85: Hydraulic Unit

    Hydraulic Unit The movement direction of the hardtop and rear module are determined by corresponding valve positions and by reversing the direction of rotation of the pump. The hydraulic pump in the hydraulic unit is driven by an electric motor that operates in two directions of rotation. Both rotation directions are implemented with a relay switch.

  • Page 86: Closure Cylinders

    E93 Complete Vehicle Workbook If the hardtop movement is interrupted, the hardtop remains in the hold position. The pressure in the hydraulic system is maintained at all times and is not shut off. In case of an emergency actuation of the hardtop, the bleed screw on the hydraulic pump must be released. The hydraulic fluid does not need to be changed (lifetime filling).
  • Page 87 Index Explanation Index Explanation Closure cylinder Outlet flaps for main pillars Lock hook Rear module mechanism Rear roof shell locking roller Rear roof shell Rear module locking roller E93 Complete Vehicle Workbook...

  • Page 88: Roof Panel Cylinders

    E93 Complete Vehicle Workbook Roof Panel Cylinders The movement of the roof panels is carried out using two roof panel cylinders. The actuation direction of the roof panel cylinders depends on the rotation direction of the hydraulic pump. When the pistons have retracted into the roof, the hardtop is closed. When the roof panel cylinders are pressurized on the piston side, the pistons are extended and move the roof panels above each other via the roof panel control arms.

  • Page 89: Main Pillar Cylinders

    Main Pillar Cylinders Rear Module Cylinders The main pillar cylinders serve to stow the roof package in the The rear module is opened and closed by the rear module luggage compartment and to lift it out of the luggage compartment. cylinders.
  • Page 90 E93 Complete Vehicle Workbook Mark mounting locations on rear module mount. Workshop Exercise - RHT Service With instructor guidance, prepare to remove complete roof module and rear module assembly. Follow the latest repair instructions in TIS. First, remove rear module assembly. Be sure to mark mounting locations to ensure proper position during re-assembly.
  • Page 91 Release all required fasteners in preparation for removal of the Workshop Exercise - RHT Service roof module. Replace bushing during re-assembly. After the removal of the rear module, proceed with removal of the roof module. Be sure plastic cover on hydraulic unit has been removed. Unclip all cable holders for electrical and hydraulic lines.
  • Page 92 E93 Complete Vehicle Workbook Tighten sleeves on special tool on hand tight. Over-tightening Workshop Exercise - RHT Service will cause problems during re-assembly. When installing special tool for roof module removal, be aware of the bolt length. Using wire ties (or suitable attachment), tie the rear module cylinders and hydraulic unit to special tool.
  • Page 93 Remove bolts (front 2x) attaching roof module to body and Disconnect remaining bolts and check for any remaining wiring loosen rear bolts for access later. harness connections. Lower roof module and then disconnect electrical connections Remove brackets as shown. from CTM and feed harness through partition. Now that the roof module is lowered disconnect ground connections and water drains.
  • Page 94 E93 Complete Vehicle Workbook Notes: Workshop Exercise - RHT Adjustments With instructor guidance and repair instructions, perform all of the necessary RHT adjustments using special tools. List all special tools required to perform RHT adjustments:...
  • Page 95 Continue with reassembly and ensure that the RHT is functioning Workshop Exercise - RHT Reassembly properly. Erase all fault codes and check RHT functions. Notes: Check all gap adjustments as shown in repair instructions. List all gap specifications in the chart below: Index Specified Gap Index...
  • Page 96 E93 Complete Vehicle Workbook The end positions of the electric drive motor are detected Classroom Exercise - Review Questions by two________________________. (circle the correct answer) What type of sensor monitors the position of the luggage Magneto-resistive sensors Hall Sensors compartment divider? (circle the correct answer) Optical Sensors Microswitches Micro-switch...
  • Page 97 NOTES PAGE E93 Complete Vehicle Workbook...
  • Page 98 NOTES title PAGE...

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