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Electrical Systems - System Overview: Overview Volvo XC90 I рестайлинг

Collision/avoidance 11 illustrations ~2217 words

Scheme 72

Scheme 72: GENERATOR (GEN) DESIGN
Scheme 72: GENERATOR (GEN) DESIGN

The main components of the generator (GEN) consist of

  1. Stator
  2. Rotor with slip rings
  3. Integrated cooling fans
  4. DC bridge
  5. Charge regulator
  6. Pulley.

Generator terminals

Scheme 73

Scheme 73
Scheme 73

Generator (GEN) terminals

  1. #A:1. B+
  2. #B:1. To central electronic module (CEM) or engine control module (ECM).

Scheme 74

Scheme 74: ALTERNATOR STRUCTURE, ENGINE B8444S
Scheme 74: ALTERNATOR STRUCTURE, ENGINE B8444S

The main components of the generator (GEN) consist of

  1. Stator
  2. Rotor with slip rings
  3. Integrated cooling fans
  4. DC bridge
  5. Charge regulator
  6. Pulley.

Alternator connections, engine B8444S

Scheme 75

Scheme 75
Scheme 75

Generator (GEN) terminals

  1. #A:1. B+
  2. #B:1. To engine control module (ECM)
  3. #B:2. Not used

Scheme 76

Scheme 76: STATOR
Scheme 76: STATOR

The stator is fixed and consists of grooved plates which are insulated internally and pressed together onto a fixed plate unit. The stator winding coils are positioned in the grooves. They are delta connected at 120° and provide a three phase alternating current to the rectifier bridge.

Scheme 77

Scheme 77: ROTOR WITH SLIP RINGS
Scheme 77: ROTOR WITH SLIP RINGS

The rotor consists of two halves (claw-poles) which interlock. The halves are pressed onto the rotor shaft. There are twelve claws on the rotor, i. e. twelve poles. One half consists of six north poles and the other half six south poles. The excitation winding is secured on the rotor shaft between the claw-pole halves. The excitation winding (also known as rotor winding) consists of a circular coil surrounded by the claw-poles and connected to the slip rings. The charge regulator supplies a magnetic current through carbon brushes positioned against the slip rings. The higher the current in the rotor the stronger the magnet field of the rotor, and therefore the higher the current generated in the windings of the stator.

Scheme 78

Scheme 78: COOLING FANS
Scheme 78: COOLING FANS

The heat generated in the generator is, in principle, proportional to the current generated and must be directed away to prevent damage to the insulation and diodes. The generator (GEN) is therefore air cooled and equipped with two integrated cooling fans on the rotor shaft.

Scheme 79

Scheme 79: RECTIFIER
Scheme 79: RECTIFIER

Alternating current (AC) is created in the generator stator windings. This must be converted to direct current (DC) before it can be used in the electrical system of the car. This conversion is made using a rectifier bridge which consists of six diodes, two diodes per phase winding.

The stator windings generate three phases and are delta connected An exciter diode is connected to each of the three stator windings. The six rectifier diodes are bridge connected. The diodes are pressed into a diode holder.

READING OFF THE CONTROL MODULE IDENTIFICATION

The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N

The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.

The codes contain the following information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N (part of the software).

VIDA identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N.

The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N

The control module can be identified by means of reading off a number of codes.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N

VIDA identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N.

VIDA identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N.

The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N

The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.

The codes contain the following information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N (part of the software).

VIDA identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N.

VIDA identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N.

READING OFF CONTROL MODULE IDENTIFICATION

VIDA identifies the control modules by reading off a number of codes from control module memory.

The codes contain information about control module

  1. P/N hardware (control module without software)
  2. serial number hardware (control module without software)
  3. P/N software
  4. P/N diagnostic software

Scheme 80

Scheme 80: CONTROL MODULE
Scheme 80: CONTROL MODULE

The task of the power seat module is to manage the following functions

  1. Seat maneuvering
  2. Storage of memory positions (seat positions only).

The control module is under the seat on the driver's side. The seat must be removed in order to replace the control module.

The power seat module is directly connected to components and to other control modules via CAN communication.

The control module checks activations and input and output signals through an integrated diagnostic system A diagnostic trouble code (DTC) is stored in certain cases if the control module detects a fault.

Diagnostic trouble codes (DTC) are stored in the control module memory. The data can be read off using the diagnostic tool.

A simple way to check that the power seat module (4/52) is supplied with power and grounded is to move the seat.

If the voltage is below 8.5 V or above 16.0 V the power seat module will not function. If the voltage increases to 9.0 V or falls to 15.5 V the control module will function again.

VIDA identifies control modules by reading off a number of codes from the control module memory. The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N.

VIDA identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N
  5. P/N slave nodes (inclination sensor module (ISM))
  6. CAN frame period (40 ms for the CAN low-speed network at time of writing)
  7. Subcontractor identification plate (ECU-ID).

VIDA identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N
  5. P/N slave nodes (inclination sensor module (ISM))
  6. CAN frame period (40 ms for the CAN low-speed network at time of writing)
  7. Subcontractor identification plate (ECU-ID).

VIDA identifies control modules by reading off a number of codes from the control module memory.

The codes contain information about the control module

  1. hardware P/N (control module without software)
  2. hardware serial number (control module without software)
  3. software P/N
  4. diagnostic software P/N.

IDENTIFICATION OF GENERATION

see IDENTIFICATION OF GENERATION

see SYSTEM OVERVIEW

see IDENTIFICATION OF GENERATION

Scheme 81

Scheme 81: REAR SEAT ENTERTAINMENT SYSTEM
Scheme 81: REAR SEAT ENTERTAINMENT SYSTEM
  1. Screen, head restraint (16/81A, B)
  2. DVD player with integrated Rear seat entertainment module (RSE) (16/82)
  3. Rear audio separation module (RAS) (16/122)
  4. AUX socket (16/123)
  5. Headphones (two)
  6. Remote control

The rear seat entertainment system is a mobile entertainment system for keeping rear seat passengers occupied and entertained with video games or movies.

The system is fully integrated in the car and has two separately controlled, high-resolution 7-inch screens mounted in the head restraints.

The rear seat entertainment module (RSE) is integrated in the DVD player and can receive signals from up to three AV inputs and can transmit video to two separately controlled screens. The control module can also send an output signal to an external screen.

The following media formats can be played by the DVD player

  1. DVD-R/+R
  2. DVD-RW/+RW
  3. CD-R and CD-RW
  4. CDDA
  5. HDCD

The following information formats can be played

  1. DVD
  2. DVD Audio
  3. VCD
  4. SVCD
  5. DivX
  6. WMV
  7. Audio CD
  8. Kodak photo CD
  9. MP3
  10. MP3 Pro
  11. playlists in M3U format
  12. WMA Sound.

Formats such as THX and DolbyDigital are also supported. Only stereo signals of this audio format are reproduced.

A connection panel with AV inputs is mounted on the rear section of the center console. Other audio and video sources can be connected to the system via this panel, such as video cameras, games consoles or portable DVD and CD players.

The system includes two pairs of wireless headphones. Audio is transferred to the headphones via an IR transmitter in each screen. Headphones with wire can be used by connecting them to the socket in the AUX panel on the back of the center console.

Audio can also be played in the rear speakers using the rear audio separation module (RAS).

The system is controlled via an infrared remote control, which can also be used to control the DVD player and the vehicle's front audio system (if installed).

Different versions (generations) of the system

The system comes in different versions depending on which software is installed in the control module/DVD player. There are slight differences in function, primarily when handling system faults. There is no difference between the systems form a hardware perspective.

XC90

For XC90 from VIN 258731, generation 4.1 is installed on the car.

For VINs prior to this number the system is generation 3.

The software version in the car can be read out using the service menu. Access the menu as follows

Model year 2006

  1. Switch on the system
  2. Open the menu
  3. Enter the code: 1971 and press

Model year 2007

  1. Switch on the system NOTE: There must not be a disc in the DVD player.
  2. Aim the remote control at a screen and depress the button for child lock for approx. 5 seconds. The menu will be displayed with four stars underneath.

see IDENTIFICATION OF GENERATION

Scheme 82

Scheme 82: REAR SEAT ENTERTAINMENT SYSTEM
Scheme 82: REAR SEAT ENTERTAINMENT SYSTEM
  1. Screen, head restraint (16/81A, B)
  2. DVD-player with integrated Rear seat entertainment module (RSE) (16/109)
  3. AUX-input (17/40.1)
  4. AV-panel (16/123.3)
  5. Headphones (two)
  6. Remote control

The system for rear seat entertainment is a mobile entertainment to keep the rear seat passengers occupied and amused with TV-games or movies.

The system is fully integrated in the car and has two separately controlled, high-resolution 7-inch screens mounted in the head restraints.

There is an internal CAN network between the Rear seat entertainment module (RSE)/DVD-player and the screens for the transfer of information. This CAN network is not connected to the vehicle's ordinary CAN network.

Rear seat entertainment module (RSE) is integrated in the DVD-player and can receive signals from up to three AV-inputs and supply video to two separately controlled screens. The control module can also supply output signal to an external screen.

The following media formats can be played by the DVD player

  1. DVD-R/+R
  2. DVD-RW/+RW
  3. CD-R and CD-RW
  4. CDDA
  5. HDCD

The following information formats can be played

  1. DVD
  2. DVD Audio
  3. VCD
  4. SVCD
  5. DivX
  6. WMV
  7. Audio CD
  8. Kodak photo CD
  9. MP3
  10. MP3 Pro
  11. playlists in M3U format
  12. WMA Sound.

Formats such as THX and DolbyDigital are also supported. Only stereo signals of this audio format are reproduced.

A connection panel with AV inputs is mounted on the rear section of the center console. Other audio and video sources can be connected to the system via this panel, such as video cameras, games consoles or portable DVD and CD players.

Two pairs of wireless headphones are included in the system. The sound is transferred to the headphones via an IR transmitter in each screen.

Audio can also be played in the vehicle's ordinary speakers via the connection from Rear seat entertainment module (RSE) to Integrated Audio Module (IAM).

Wired headphones can also be connected if the vehicle is equipped with headphone panels in the C-posts. The panels are available as accessories to the vehicle's audio system and are not directly included in the rear seat entertainment system.

In the storage compartment between the front seats there is also an AUX-input where, e. g., a portable CD or media player can be connected. When an audio source is connected, the sound from it can be played in the vehicle's ordinary speakers, by selecting "AUX" as audio source on the audio panel.

The system is controlled using an infrared (IR) remote control, which also can be used to control the DVD-player and screens.

see IDENTIFICATION OF GENERATION

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