DIAGNOSTIC FUNCTIONS
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
DIAGNOSTIC TROUBLE CODES (DTCS)
A diagnostic trouble code (DTC) is stored if the control module detects a fault.
If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault remains in the control module.
READING AND ERASING DIAGNOSTIC TROUBLE CODES (DTCS)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes can only be erased once all the diagnostic trouble codes have been read out at least once.
Note. Certain functions are unavailable until the diagnostic trouble codes (DTCs) have been erased.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. A fault which is detected in the most recent operating cycle is defined as permanent. Other faults are defined as intermittent. An operating cycle involves ignition on, the vehicle speed exceeding 20 km/h and the ignition being switched off.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
GENERAL
The central electronic module (CEM) is the master unit for the immobilizer. The central electronic module (CEM) also directly stores diagnostic trouble codes (DTCs) for faults in the immobilizer system. Some other faults can also be stored in the engine control module (ECM).
GENERAL
The central electronic module (CEM) is the master unit for the immobilizer. The central electronic module (CEM) also directly stores diagnostic trouble codes (DTCs) for faults in the immobilizer system. Some other faults can also be stored in the engine control module (ECM).
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault.
This control module can store up to six diagnostic trouble codes (DTCs), the three first and the three latest.
Should a fault disappear for any reason after being permanently stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the control module.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. The on-board diagnostic (OBD) system can identify 44 different faults in the infotainment control module (ICM). These are stored as diagnostic trouble codes (DTCs). This function can also be used to read off whether the fault is still present (permanent) or whether it has now ceased (intermittent) after the diagnostic trouble code (DTC) has been stored. Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. This control module can store up to 6 diagnostic trouble codes (DTCs), the three first and the three latest.
If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault remains in the control module.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. The on-board diagnostic (OBD) system can identify 41 different faults in the infotainment control module (ICM). These are stored as diagnostic trouble codes (DTCs). This function can also be used to read off whether the fault is still present (permanent) or whether it has now ceased (intermittent) after the diagnostic trouble code (DTC) has been stored.
Diagnostic trouble codes can only be erased once all the diagnostic trouble codes have been read out at least once.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
If the control module detects a fault, a diagnostic trouble code is generated. The control module can store up to 10 trouble codes. A fault that is detected during the most recent operating cycle is defined as permanent. Other faults that are detected are defined as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault.
Should a fault disappear for any reason after being permanently stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the control module.
If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
Note. Certain functions are unavailable until the diagnostic trouble codes (DTCs) have been erased.
RING BREAK DIAGNOSTICS
General
This function is important when fault-tracing the MOST network. Ring break diagnostics are used when there is an open-circuit in the MOST network and diagnostic trouble code (DTC) ICM-DC02 has been stored in the infotainment control module (ICM).
During fault-tracing, all control modules transmit a message to the infotainment control module (ICM) in reverse order in relation to the position on the network. This means that the antenna module (ATM) is first, not last. The control module which is not working will not transmit an answer to the infotainment control module (ICM). This also means that the control modules connected after the defective control module will be unable to transmit a message to the infotainment control module (ICM).
The same applies in the event of an open-circuit in the fiber optic cable in the MOST network. None of the control modules before the open-circuit will be able to send their message to the infotainment control module (ICM). The infotainment control module (ICM) is then able to calculate the position of the open-circuit from the incoming messages.
HINT: It is important to know which control modules are connected and in what order to identify the control module which sends each message.
Scheme 80
Example 1
A MOST network contains all eight control modules.
There is an open-circuit in the wiring between the phone module (PHM) and the MD module (MP1). See the illustration.
During the ring break diagnostic, the infotainment control module (ICM) receives responses in reverse order to the order of the control modules. Those that are located before the MD module (MP1) cannot respond to the infotainment control module (ICM).
The infotainment control module (ICM) receives responses up to position four and presents the value 4.
If there was no open-circuit, the infotainment control module (ICM) would have responded "OK".
Example 2
A MOST network to which the subwoofer module (SUB) is not connected, however the other seven control modules are connected.
There is an open-circuit in the wiring between the phone module (PHM) and the CD module (MP2).
During the ring break diagnostic, the response value from all the control modules before the subwoofer module (SUB) will be one less than example 1 when all control modules are connected.
The infotainment control module (ICM) receives responses up to position three and presents the value 3.
If there was no open-circuit, the infotainment control module (ICM) would have responded "OK".
General
This function is important when fault-tracing the MOST network. Ring break diagnostics are used when there is an open-circuit in the MOST network and diagnostic trouble code (DTC) ICM-DC02 has been stored in the infotainment control module (ICM).
During a ring break diagnostic, all control modules transmit a message to the infotainment control module (ICM) in reverse order to their position on the MOST network. This means that the Integrated Audio Module (IAM) transmits first, not last.
The control module which is not working will not transmit a response to the infotainment control module (ICM). This also means that the control modules which are connected before the defective control module will be unable to transmit a message to the infotainment control module (ICM).
The same applies in the event of an open-circuit in the fiber optic cable in the MOST network. None of the control modules before the open-circuit will be able to send their message to the infotainment control module (ICM). The infotainment control module (ICM) is then able to calculate the position of the open-circuit from the incoming messages.
HINT: It is important to know which control modules are connected and in what order to identify the control module which sends each message.
Example
Scheme 81
A MOST network with all control modules.
An open circuit occurs on the cable between the Audio module (AUD) and the Accessory USB unit (AUU), see figure.
The infotainment control module (ICM) receives responses up to and including the Accessory USB unit (AUU) and presents the value 3.
If there was no open-circuit, the infotainment control module (ICM) would have responded "OK.
General
This function is important when fault-tracing the MOST network. Ring break diagnostics are used when there is an open-circuit in the MOST network and diagnostic trouble code (DTC) ICM-DC02 has been stored in the infotainment control module (ICM).
During a ring break diagnostic, all control modules transmit a message to the infotainment control module (ICM) in reverse order to their position on the MOST network. This means that the Subwoofer module (SUB) transmits first, not last.
The control module which is not working will not transmit a response to the infotainment control module (ICM). This also means that the control modules which are connected before the defective control module will be unable to transmit a message to the infotainment control module (ICM).
The same applies in the event of an open-circuit in the fiber optic cable in the MOST network. None of the control modules before the open-circuit will be able to send their message to the infotainment control module (ICM). The infotainment control module (ICM) is then able to calculate the position of the open-circuit from the incoming messages.
HINT: It is important to know which control modules are connected and in what order to identify the control module which sends each message.
Example 1 (up to and incl. structure week 200708)
Scheme 82
A MOST network contains 6 control modules. There is an open-circuit in the cable between the Remote Digital Audio Receiver (RDAR) and the audio module (AUD). See the illustration.
During the ring break diagnostic, the infotainment control module (ICM) receives responses in reverse order to the order of the control modules on the MOST network.
The Remote Digital Audio Receiver (RDAR), located after the Audio module (AUD) cannot transmit its response to the Infotainment control module (ICM). The infotainment control module (ICM) receives responses up to position four and presents the value 4.
If there was no open-circuit, the infotainment control module (ICM) would have responded "OK.
Example 2 (from and incl. structure week 200709)
Scheme 83
A MOST network with all control modules.
An open circuit occurs on the cable between the Audio module (AUD) and the Accessory USB unit (AUU), see figure.
The infotainment control module (ICM) receives responses up to and including the Accessory USB unit (AUU) and presents the value 4.
If there was no open-circuit, the infotainment control module (ICM) would have responded "OK.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. A fault which is detected in the most recent operating cycle is defined as permanent. Other faults are defined as intermittent.
Should a fault disappear for any reason after being permanently stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the control module.
If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
Note. Certain functions are unavailable until the diagnostic trouble codes (DTCs) have been erased.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
If the control module detect a fault, a diagnostic trouble code (DTC) is stored. A fault that was detected during the last operating cycle is defined as permanent. Other faults that are detected are defined as intermittent.
Should a fault disappear for any reason after being stored in the control module as a permanent diagnostic trouble code, the information remains stored in the control module. If a fault is no longer permanent, the diagnostic trouble code remains as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes can only be erased once all the diagnostic trouble codes have been read out at least once.
Note. Certain functions are unavailable until the diagnostic trouble codes (DTCs) have been erased.
GENERAL
The Parking Assistance Camera (PAC) does not have a built-in diagnostic system. In the event of a fault in any of the components that are required to generated or transmit image information from the camera to the display screen, a black screen is shown instead. It is only shown if the fault occurs when the Parking Assistance Camera (PAC) is activated, and is only shown once.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
If the control module detects a fault, a diagnostic trouble code is generated. The number of diagnostic trouble codes (DTCs) totals approximately 29. A fault that is detected during the most recent operating cycle is defined as permanent. Other faults that are detected are defined as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
READING OFF EXTENDED DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
This function can be used to read parameters, status identifiers and counters stored at the same time as a diagnostic trouble code (DTC). These are called frozen values.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. A fault which is detected in the most recent operating cycle is defined as permanent. Other faults are defined as intermittent.
The control module can store up to ten diagnostic trouble codes (DTCs).
Should a fault disappear for any reason after being permanently stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the control module.
If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
POWER SEAT MODULE DIAGNOSTIC FUNCTIONS
GENERAL
The control module has a built-in diagnostic system, the Volvo on-board diagnostic (OBD) system, which continuously monitors itself and its input and output signals.
If the control module detects a fault it will store a diagnostic trouble code (DTC). A fault which is detected in the latest driving cycle is defined as permanent. Other detected faults are defined as intermittent.
Stored diagnostic trouble codes (DTCs) can be erased using this function.
Erasing diagnostic trouble codes (DTCs) can only be carried out when all diagnostic trouble codes (DTCs) have been read at least once.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. A fault which is detected in the most recent operating cycle is defined as permanent. Other faults which are detected are defined as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
GENERAL
The rear electronic module (REM) has a built-in diagnostic system, the Volvo on-board diagnostic (OBD) system, which continuously monitors itself and the input and output signals.
DIAGNOSTIC TROUBLE CODES (DTC)
A diagnostic trouble code (DTC) is stored if the rear electronic module (REM) detects a fault. This control module can store up to 6 diagnostic trouble codes (DTCs), the 3 first and the 3 latest.
Should a fault disappear for any reason after being permanently stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the memory.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. The on-board diagnostic (OBD) system can identify 58 different faults in the rear electronic module (REM) in the form of diagnostic trouble codes (DTCs).
This function can also be used to read off whether the fault is still present (permanent) or whether it has now ceased (intermittent) after the diagnostic trouble code (DTC) has been stored.
Diagnostic trouble codes (DTC) can only be erased once all the diagnostic trouble codes (DTC) have been read off at least once.
GENERAL
The rear electronic module (REM) has a built-in diagnostic system, the Volvo on-board diagnostic (OBD) system, which continuously monitors itself and the input and output signals.
A diagnostic trouble code (DTC) is stored if the rear electronic module (REM) detects a fault. This control module can store up to 6 diagnostic trouble codes (DTCs), the 3 first and the 3 latest.
Should a fault disappear for any reason after being permanently stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the memory.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. The on-board diagnostic (OBD) system can identify 58 different faults in the rear electronic module (REM) in the form of diagnostic trouble codes (DTCs).
This function can also be used to read off whether the fault is still present (permanent) or whether it has now ceased (intermittent) after the diagnostic trouble code (DTC) has been stored.
Diagnostic trouble codes (DTC) can only be erased once all the diagnostic trouble codes (DTC) have been read off at least once.
GENERAL
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.
A diagnostic trouble code (DTC) is stored if the control module detects a fault. The control module can store up to 6 diagnostic trouble codes (DTCs). A fault which is detected in the most recent operating cycle is defined as permanent. Other faults which are detected are defined as intermittent.
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
This function can be used to read parameters, status identifiers and counters stored at the same time as a diagnostic trouble code (DTC). These are called frozen values.
For further information, see: DESCRIPTION OF FROZEN VALUES, REAR ELECTRICAL MODULE
The rear seat entertainment system is not connected to the vehicle's CAN network and contains no diagnostic trouble codes or readable diagnostic services. System fault tracing is done via symptom input.
Scheme 84
The rear seat entertainment system is supplied power and regulated by the rear seat entertainment module (RSE) (16/124).
When the rear seat entertainment module (RSE) receives a switch-on command from the infrared remote control via the IR receivers in one of the head restraints, it performs a simple system check and then sends commands to other system components for activation. Once a screen (16/81A, B) has been selected with the infrared remote control, the rear seat entertainment module (RSE) identifies the selected screen and displays a menu from which the user can select the functions described below
- Independent shifting of three audio/video inputs (DVD, TV (if installed) and AUX)
- Image adjustment (image colour, brightness, contrast and aspect ratio)
- Audio settings (bass, treble and volume)
- Language selection for on-screen instructions
- Switch individual screens ON/OFF
The rear seat entertainment module (RSE) also determines which media source has been linked to the selected screen and forwards the commands in an appropriate protocol. For example, if screen 1 is set for DVD playback and an infrared playback command is detected at screen 1, it will be received, stored and forwarded to the DVD player (16/82) in the DVD player's infrared protocol. A fixed memory stores the instruction language used and current audio and video settings for the respective output channel. These settings are loaded upon start. Volume is automatically set to low level.
Scheme 85
The rear audio separation module (RAS) (16/122) is a unit with dual functions. The first is the production of continual infrared signals for the wireless headphones (audio is in headphone mode as standard) via the IR transmitter (16/125). The second is integration with the vehicle's rear speakers 16/5, 16/6, 16/57, 16/58 (XC90)) for media selection.
When the unit is in standard mode, audio signals are sent from the front audio system to the rear speakers. When selected using the remote control, the rear audio separation module (RAS) is activated and audio signals from the front audio system are replaced with audio signals from the rear seat entertainment system. In rear seat entertainment system mode, media signals for the right or left screen can be selected via the remote control.
Note. Lowering the volume of the screen will increase the signal/noise ratio of the headphones. Optimal headphone output is obtained by setting screen volume to 75%. Headphone volume can then be set on the headphones themselves.
Scheme 86
Each screen houses an IR receiver. The IR receivers are connected to the rear seat entertainment module (RSE) (16/124) and are activated when the rear seat entertainment module (RSE) is supplied power. When a button is pressed on the remote control, it emits a signal with infrared light. The coding of this signal varies depending on which button was pressed. The IR signal is received by the IR receiver below the respective head restraint screen (16/81A, B) and is forwarded to the rear seat entertainment module (RSE) for processing.
The remote control can be used to switch between different audio and/or video inputs in the system
- DVD player, audio/video
- AUX input, audio or audio/video
- Audio from the front audio system to one of the headphones, both headphones or separately to one of the headphones and the rear speakers
- Audio/video from a TV receiver (if installed) to one or both screens.
The remote control is used for selection by aiming it at the screen that is to respond to the command. The command from the remote control is received by one (or both) of the IR receivers located below the screens (16/81A, B). The integrated infrared receiver is activated when the rear seat entertainment module (RSE) (16/124) is supplied power. The receiver forwards the command to the rear seat entertainment module (RSE). The rear seat entertainment module (RSE) will select AV or audio source for the screen in question. The remote control can then be aimed at the other screen to select a source for that screen.
Scheme 87
Note. There may be a slight delay between selecting a DVD function with the remote control and activation of the DVD player function. A message will appear on the screen to confirm that the DVD function was selected. Display of "Not permitted" indicates that the DVD player is still processing a previously selected function.
The DVD player is not operational until the rear seat entertainment module (RSE) (16/124) has been activated via an infrared switch-on command from the remote control and the screens are lit.
Note. This means, for example, that a disc in the DVD player (16/82) cannot be ejected until the rear seat entertainment system has been switched on.
A microprocessor is used to control the power supply to the DVD player based on the position of the ignition key. This is handled via a connection from the ignition switch to the rear seat entertainment system (RSE). The system is functional when the ignition key is in position II. If the voltage in the lead is high, the DVD player can be supplied power. If voltage in the lead is low, the system cannot be supplied power. The lead for controlling power supply is also used to activate the fan on the rear of the player.
The microprocessor is also used to send commands to and receive information from the DVD mechanism. IR commands from the remote control are received by the rear seat entertainment module (RSE) and come to the DVD player via the IR pin on the rear connection block (ISO connection). IR commands are interpreted by the microprocessor. The DVD player is used to read the source media, which consists of DVDs and CDs that fulfil relevant standards. The DVD player does not read CD-R discs. The use of DVD-R, CD-RW and DVD-RW discs in the DVD player is also discouraged.
Note. Introduction of a new version of the DVD player is expected week 5 2005. The new DVD player can play DVD-R/+R, DVD-RW/+RW, CD-R and CD-RW discs. It can also read Kodak photo CDs and play MP3 files in the disc's root directory and subfolders. The DVD player will also be able to read play lists for MP3 files in M3U format.
When a DVD is inserted in the opening, DVD playback starts automatically if the disc does not have a play menu. DVD playback can be resumed from a pause, for example if the ignition is switched off while a movie is being played. Playback then resumes where it left off once the ignition is switched back on. Audio and video signals are fed out from the DVD player from the connection block (ISO connection) on the rear of the unit.
Scheme 88
Two sets of IR headphones are included. Any number of headphones can be used provided they are within the area of the IR transmitter. The wireless headphones use an infrared signal. There must be a free path between the transmitter and the receivers on the side of the headphones. If the path is blocked, audio will be interrupted. The headphones are activated by pressing the power button on one side of the headphones. They switch off automatically 3-4 minutes after the IR transmitter has stopped sending a signal.
Note. Lowering the volume of the screen will increase the signal/noise ratio of the headphones. Optimal headphone output is obtained by setting screen volume to 75%. Headphone volume can then be regulated using the wheel on the headphones themselves.
see DIAGNOSTIC FUNCTIONS
TROUBLESHOOTING INFORMATION
For diagnostics the Rear seat entertainment module (RSE)/DVD-player has a basic internal system check and a start-up procedure for the screens.
The control module is not connected to the vehicle's other CAN networks. This means for example that no diagnostic trouble codes (DTCs) can be read from the control module. All fault tracing must therefore be carried out via symptom fault tracing.
The following is information that may facilitate when fault tracing in the system.
When the ignition is switched on the Rear seat entertainment module (RSE) performs a basic internal system check and starts the start-up procedure with the screens.
If the time from when the ignition is switched on until the system is in standby mode (only the illuminated POWER button is lit) is longer than normal, this indicates a communication fault with the screens.
The start-up times, see: SYSTEM START-UP PROCEDURE
Causes of a long start-up time can be
- No supply voltage and ground to the screen
- Damaged wake-up signal cable.
- Damaged cables for the internal CAN network (no communication can take place). In connector D on the Rear seat entertainment module (RSE)/DVD-player the CAN network is strapped for the right-hand screen . The strap is used to support the future expansion of the system with additional devices. If connector D has been damaged, has become dislodged or for some reason there is no connection between both ends of the strap on the CAN cables, it will not be possible to establish communication.
Switch on the system using the POWER button on the DVD player
If one of the screens does not start when the system is switched on, when the start-up procedure has elapsed over the normal time (without fault), and only the POWER lamp on the control module/DVD player is lit, this indicates a fault with the actual screen or the cables between the screen and the circuit board.
When communication with the control modules/DVD player in this case is okay, both these screens' circuit boards behind the actual screens are OK.
The functionality of the circuit boards can also be checked by switch on the system and checking whether the IR lamps in the bottom of the screen are slightly illuminated.
The IR-lights are lit for about 2 minutes after the system is switched on or when sound is played from a selected audio source.
Switch on the system using the remote control
If the system is switched on using the remote control aimed towards the right-hand screen, when the voltage supply and ground to the screen are fully functional but for example there is no CAN-communication with the Rear seat entertainment module (RSE)/DVD-player, the screen will be lit and work in LOCAL mode. It will then be possible to show the menus and to adjust the sound and brightness settings.
This can be misinterpreted as the function is OK. However no image will be shown on screen if, for example, you play a DVD disc. The system will be switched on and the left-hand screen will start. This is because the cables for the IR signals do not go via the CAN network, but go directly to the DVD player and are interpreted.
If the screen works in LOCAL mode this indicates that the voltage supply and ground to the screen's circuit board are OK.
Scheme 89
Note. There may be a slight delay between selecting a DVD function with the remote control and activation of the DVD player function. A message will appear on the screen to confirm that the DVD function was selected. Display of indicates that the DVD player is still processing a previously selected function.
The rear seat entertainment system is supplied with electric power and is controlled by the rear seat entertainment module (RSE) (16/109).
The control module also includes the DVD player for the system.
The system is powered via X-feed and directly from the battery. If the system is operating when the ignition is switched of, a question will appear on the screens as to whether continued play is permitted.
If the user answers YES, the system will continuing playing another 10 minutes. The system will then shut down. If there is no response to the question, the system will shut down after 1 minute. As a means of safeguarding the battery, play time cannot be extended unless the ignition is switched on again.
All buttons will light for approximately 5-10 seconds when attempting to start the system using the POWER button on the DVD player in this mode, they will then go out. Accordingly, the system is not permitted to start before the ignition has been switched on again.
If the system is to be switched on using the remote control, the ignition must be switched on and the remote control must be pointed at one of the screens before any buttons are depressed, the receiver for the signals from the remote control is located on the lower edge of the screens.
When the remote control is aimed at a screen (16/81A, B) and a function key is pressed in, the Rear seat entertainment module (RSE) identifies the selected screen and executes the command that the remote control sent out.
If, for example, you press a menu selection button, a menu opens on the screen at which the remote control was aimed. The possible selections are described below
- Independent shifting of three audio/video inputs (DVD and AUX).
- Image adjustment (image color, brightness, contrast and aspect ratio).
- Audio settings (bass, treble and volume).
- Language selection for on-screen instructions.
- Switch individual screens ON/OFF.
Rear seat entertainment module (RSE) also decides which media source that has been linked to the selected screen and transmits command in a suitable protocol.
If, for example, the left screen is set for DVD-playback and an infrared play command is detected at the left screen, the message is received, saved and forwarded to the DVD-player (16/109) in the DVD-player's infrared protocol.
A fixed memory saves the displayed instruction language used and the current audio and video settings for the respective output channel. These settings are loaded upon start-up with the exception of volume level, which is set to low as standard.
When a DVD disc is inserted in the opening DVD playback starts automatically if the DVD disc does not have a disc menu.
DVD playback can resume from a paused position, for example, if the ignition was switched off when watching a movie. In this case playback continues from the last position when the ignition is switched on again. The audio and video signals are fed out from the DVD player from the connection block (ISO connection) at the rear of the device.
For diagnostics the Rear seat entertainment module (RSE)/DVD-player has a basic internal system check and a start-up procedure for the screens.
The control module is not connected to the vehicle's other CAN networks. This means for example that no diagnostic trouble codes (DTCs) can be read from the control module. All fault tracing must therefore be carried out via symptom fault tracing.
The following is information that may facilitate when fault tracing in the system.
When the ignition is switched on the Rear seat entertainment module (RSE) performs a basic internal system check and starts the start-up procedure with the screens.
If the time from when the ignition is switched on until the system is in standby mode (only the illuminated POWER button is lit) is longer than normal, this indicates a communication fault with the screens.
The start-up times, see: SYSTEM START-UP PROCEDURE
Causes of a long start-up time can be
- No supply voltage and ground to the screen
- Damaged wake-up signal cable.
- Damaged cables for the internal CAN network (no communication can take place). In connector D on the Rear seat entertainment module (RSE)/DVD-player the CAN network is strapped for the right-hand screen . The strap is used to support the future expansion of the system with additional devices. If connector D has been damaged, has become dislodged or for some reason there is no connection between both ends of the strap on the CAN cables, it will not be possible to establish communication.
Switch on the system using the POWER button on the DVD player
If one of the screens does not start when the system is switched on, when the start-up procedure has elapsed over the normal time (without fault), and only the POWER lamp on the control module/DVD player is lit, this indicates a fault with the actual screen or its cables between the screen and the circuit board.
When communication with the control modules/DVD player in this case is okay, both these screens' circuit boards behind the actual screens are OK.
The functionality of the circuit boards can also be checked by switch on the system and checking whether the IR lamps in the bottom of the screen are slightly illuminated.
The IR-lights are lit for about 2 minutes after the system is switched on or when sound is played from a selected audio source.
Switch on the system using the remote control
If the system is switched on using the remote control aimed towards the right-hand screen, when the voltage supply and ground to the screen are fully functional but for example there is no CAN-communication with the Rear seat entertainment module (RSE)/DVD-player, the screen will be lit and work in LOCAL mode. It will then be possible to show the menus and to adjust the sound and brightness settings.
This can be misinterpreted as the function is OK. However no image will be shown on screen if, for example, you play a DVD disc or watch the TV. The system will be switched on and the left-hand screen will start. This is because the cables for the IR signals do not go via the CAN network, but go directly to the DVD player and are interpreted.
If the screen works in LOCAL mode this indicates that the voltage supply and ground to the screen's circuit board are OK.
Scheme 90
HINT: AUX-input (16/123.2) in XC90 has number 17/40.1.
Note. There may be a slight delay between selecting a DVD function with the remote control and activation of the DVD player function. A message will appear on the screen to confirm that the DVD function was selected. Display of 'Not permitted' indicates that the DVD player is still processing a previously selected function.
The rear seat entertainment system is power fed and controlled by the Rear seat entertainment module (RSE) (16/109). The control module also includes the system's DVD player.
The system is powered via X-feed and directly from the battery. If the system is operating when the ignition is switched of, a question will appear on the screens as to whether continued play is permitted.
If the user answers YES, the system will continuing playing another 10 minutes. The system will then shut down. If there is no response to the question, the system will shut down after 1 minute. As a means of safeguarding the battery, play time cannot be extended unless the ignition is switched on again.
All buttons will light for approximately 5 seconds when attempting to start the system using the POWER button on the DVD player in this mode, they will then go out. Accordingly, the system is not permitted to start before the ignition has been switched on again.
When the ignition is switched on the Rear seat entertainment module (RSE) performs a basic internal system check and starts the start-up procedure with the screens.
For further information, see: SYSTEM START-UP PROCEDURE
If the system is to be switched on using the remote control, the ignition must be switched on and the remote control must be pointed at one of the screens before any buttons are depressed, the receiver for the signals from the remote control is located on the lower edge of the screens.
When the remote control is aimed at a screen (16/81A, B) and a function key is pressed in, the Rear seat entertainment module (RSE) identifies the selected screen and executes the command that the remote control sent out.
If, for example, you press a menu selection button, a menu opens on the screen at which the remote control was aimed. The possible selections are described below
- Independent shifting of three audio/video inputs (DVD, TV (if installed) and AUX).
- Image adjustment (image color, brightness, contrast and aspect ratio).
- Audio settings (bass, treble and volume).
- Language selection for on-screen instructions.
- Switch individual screens ON/OFF.
- Service menu to reach settings such as selection of region code, TV receiver, etc.
Rear seat entertainment module (RSE) also decides which media source that has been linked to the selected screen and transmits command in a suitable protocol.
If, for example, the left screen is set for DVD-playback and an infrared play command is detected at the left screen, the message is received, saved and forwarded to the DVD-player (16/109) in the DVD-player's infrared protocol.
A fixed memory saves the displayed instruction language used and the current audio and video settings for the respective output channel. These settings are loaded upon start-up with the exception of volume level, which is set to low as standard.
When a DVD disc is inserted in the opening DVD playback starts automatically if the DVD disc does not have a disc menu.
DVD playback can resume from a paused position, for example, if the ignition was switched off when watching a movie. In this case playback continues from the last position when the ignition is switched on again. The audio and video signals are fed out from the DVD player from the connection block (ISO connection) at the rear of the device.