Checking System, Digital Versatile Disc Player and Screens, Rear Seat Entertainment, Generation 4.3
Checking the system, digital versatile disc player and screens
Fault-tracing information
If the system cannot be turned on and no screen is lit up and the malfunction cannot be connected to a special function, e.g., that the AUX-input is used, the cause of the malfunction may be:
- Contact resistance or oxidation in the terminals.
- One or both screens not connected.
- Open-circuit in leads between screen and rear seat entertainment module (RSE).
- Voltage supply to the screen or Rear Seat Entertainment Module (RSE).
- Damaged screen.
If the DVD player does not work but other audio/picture sources work, the problem may be due to:
- Damaged DVD-disc.
If none or only one of the screens work, and this is not associated to a certain function in the system, the probable cause may be:
- Contact resistance or oxidation in the terminals.
- Open circuit on signal cable.
- Power supply missing
- Damaged screen.
- Open-circuit or short-circuit in the cable for the control area network (CAN).
Continue - Fault-tracing information
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Checking the power supply and ground terminals
If lighting in the buttons does not come on at all, this indicates malfunction of the voltage feed or ground for the rear seat entertainment module (RSE)/DVD-player.
Check the lead for voltage feed to rear seat entertainment module (RSE)/DVD-player's #A4, #A6 and #A7 for short-circuiting to voltage, short-circuiting to ground and open circuit. The voltage should be approx. the same as the battery voltage.
Hint: Power supply (15 feed) is common with power supply to rear 12 V socket.
Check the lead for ground connection to rear seat entertainment module (RSE), connector #A8, for open circuit and short-circuit to voltage. Also check the ground terminal. Check for contact resistance and oxidation.
Check the connector for rear seat entertainment module (RSE)/DVD-player contact resistance and oxidation.
For more information, see wiring diagram and signal description.
Other information
- Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Continue - Verification
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Fault-tracing information
Attempt New Test - Fault-tracing information
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Fault-tracing information
When the ignition is on, the rear seat entertainment module (RSE) performs a simple internal system-check and starts the start-up procedure with the screens.
- Ignition on. Lighting in the DVD-player's buttons is activated.
- When start-up is performed the lighting in the DVD-player's buttons goes off, does not apply to POWER-button. For more information, see Design and Function.
Check how illumination of the function buttons behaves during start-up and then select the alternative described below.
1. Lighting in the DVD-player's buttons is not activated at all with ignition on.
2. Lighting in all of the DVD-player's buttons is activated and all buttons except the POWER-button go off after approx. 10 seconds.
3. Lighting in all of the DVD-player's buttons is activated and all buttons except the POWER-button go off after approx. 85-95 seconds.
The specified times are to be considered guidelines, not exact times.
Hint: That the lighting in the function buttons goes out after approx. 10 seconds, means that the screens are supplied with voltage and grounded as well as that Rear seat entertainment module (RSE) (DVD-player) has established contact with both screens on the internal CAN-net. This also means that the circuit boards behind the screens in both head restraints work as intended.
1 - Checking the power supply and ground terminals
2 - Checking the power supply to the control module
3 - Checking voltage feed and ground for screens
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Checking the power supply to the control module
- Turn on the system with the main switch on the DVD-player.
- Lighting in all of the DVD-player's buttons shall now be activated and remain on.
Hint: If lighting in all of the DVD-player's buttons is activated, and then goes off after approx. 5-10 seconds, this indicates lost 15-feed to rear seat entertainment module (RSE)/DVD-player.
Does lighting stay on?
Yes - Checking the display screens
No - Checking the wiring and terminals
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Checking voltage feed and ground for screens
Note! Rear seat entertainment module (RSE) (DVD-player) has not established contact with one or both screens. Whatever the case is, can be indicated by how long time the start has taken. If one of the screens does not respond but the other does, start-up takes about 85 seconds. If none of the screens respond, start-up takes approx. 95 seconds. The specified times are to be considered guidelines, not exact times.
Hint: Turn on the system with the main switch on the DVD-player. The screen that does not have contact with the control module (DVD-player) will not light up. If the power supply and ground to the screen are working properly but the screen has no contact with the rear seat entertainment module (RSE)/DVD player via the CAN network, the screen will come on in LOCAL mode at start-up. Then neither sound will be heard nor picture shown at playback from DVD-player to this screen. This indicates a malfunction of either the wake-up signal or CAN-communication.
Take measurements for the screen that is not communicating.
Check the voltage feed from rear seat entertainment module (RSE)/DVD-player to screens, #E1 (left screen) and #E13 (right screen), for short-circuiting to ground and open circuit. The voltage must be approximately battery voltage when the ignition is on.
Check the ground connection from rear seat entertainment module (RSE)/DVD-player to screens, #E12 (left screen) and #E24 (right screen), for short-circuiting to voltage and open circuit.
Check the connector for rear seat entertainment module (RSE)/DVD-player as well as screens for loose contact, contact resistance and oxidation.
Hint: If a screen is not working, try switching places between the screens/head restraints. If the malfunction remains, this indicates a malfunction either in the leads between the screen's circuit board and the display itself or in the display itself.
For more information, see wiring diagram and signal description.
For further information, see the wiring diagram.
Other information
- Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Was a fault detected?
Yes - Verification
No - Checking wake-up signal
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Checking the wiring and terminals
Check the lead for voltage feed (15-feed) to rear seat entertainment module (RSE)/DVD-player's #A6 and #A7 for short-circuiting to voltage, short-circuiting to ground and open circuit.
Hint: Power supply (15 feed) is common with power supply to rear 12 V socket.
Note! When this feed is lost, the system will only work for another approx. 10 minutes. The system cannot be restarted until the power supply is OK. If no cable or fuse defects are found and there still is no power supply, the problem probably lies in the vehicle electrical system.
For more information, see wiring diagram and signal description.
Other information
1. Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
2. Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Continue - Verification
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Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Restore components and connectors.
- Switch on the ignition. Lighting in the DVD-player's buttons is activated. If the TV receiver is installed, the receiver's LED lights up.
- When start-up is performed the lighting in the DVD-player's buttons goes off, does not apply to POWER-button. If the TV receiver is installed, the receiver's LED goes out.
Note! A long start-up time indicates a fault in communication with the screens. For further information, see VIDA Design and function.
- Start the system using the POWER button on the DVD player or the remote control. Use the buttons, on both DVD-player and remote control, to operate the system.
Check that:
- The screens show a picture.
- DVD-disc can be played.
- Sound is heard in wireless headphones.
- Sound can be heard in the vehicle's speakers.
- Menus can be accessed with the remote control in both screens.
- TV picture appears (if TV receiver is installed) and it is possible to change channels.
- If possible, connect an external source to the AV input and test the function.
Is the function OK?
Yes - FAULT FOUND
No - Fault-tracing information
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Checking the display screens
- Turn on the system with the main switch on the DVD-player.
- Lighting in all of the DVD-player's buttons shall now be activated and remain on.
- Now the screens shall be activated.
Do the screens come on?
Yes - Checking the remote control
No - Checking the components and wiring
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Checking the components and wiring
Too high or too low temperature in the screen.
The screen has a built-in temperature sensor that registers the temperature inside the screen. The temperature signal is sent to the rear seat entertainment module (RSE)/DVD player and is used to prevent the use of the screen at too high or low a temperature. Temperature is not monitored for the first 5 minutes after the ignition is switched on.
The following happens:
- At +72 °C and -19 °C, a warning appears on the screen. The warning message is removed if the temperature changes to +70 °C or -17 °C.
- If the temperature changes to +77 °C or -24 °C, the system shuts off.
Check if the screen's temperature is within approved range.
Checking the components and wiring
Hint: If only one of the screens lights up, try installing the screen that is not working in the head restraint where the working screen was installed. Then restart the system by turning it off, switching off the ignition and then switching the ignition on again. Turn on the system with the main switch on the DVD-player. If the malfunction remains, this indicates a malfunction either in the leads between the screen's circuit board and the display itself or in the display itself.
Try a new screen if necessary.
For more information, see wiring diagram and signal description.
Other information
- Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Continue - Verification
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Checking the remote control
Make sure the remote control batteries are fully charged.
- Turn off the system with the main switch on the DVD player.
- Wait until the system has shut down.
- Turn on the system with the remote control aimed at the left screen.
Then repeat with the right screen.
Do the screens come on?
Yes - Checking the DVD player
No - Checking the remote control signal
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Checking the remote control signal
Hint: If none of the screens come on in the previous test, the probable cause is a damaged remote control or discharged batteries.
Hint: If only one screen does not come on in the previous test, it indicates that the cable for infrared (IR) signals is probably damaged.
Hint: Activation of the infrared IR-receivers in the head restraints can be checked by the IR-lights in the screen's lower edge being on dimly after the system has been turned on.
Checking IR-signal, left screen
Check the lead for the infrared (IR) signal between the screen and rear seat entertainment module (RSE) for open circuit. For more information, see wiring diagram and signal description.
To check the voltage level on the signal cable for IR-signal, proceed as follows:
- Connect all cables and connectors.
- Measure the voltage between the signal cable for the Infra Red (IR) signal to the left-hand display screen and ground. The measured voltage is reference value.
Note! Do not press any of the buttons on the remote control during this measurement.
- Measure from the rear side of a suitable connector. Do not damage the terminals in the connector.
- Aim the remote control at the left screen and press in a button on the remote control. The voltage on the signal cable must fall slightly for as long as the button on the remote control is pressed in.
Note! Important in this measurement are not the absolute voltage levels, instead you get a voltage difference downward.
Checking IR-signal, right screen
Compare the latest reading as above with the signal for the infra red (IR) signal from the right-hand infra red (IR) receiver for the display screen.
Conclusion
- If the result of the above checks is that no malfunction was found, this means that the receivers in both screens work and that the remote control is OK.
- If voltages on the cables are OK but a lower voltage cannot be measured when a button on the remote control is pressed down, try with replacing the remote control.
Other information
- Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Continue - Verification
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Checking the DVD player
Check that the DVD is not damaged and that it is clean. Try using another DVD if necessary.
Check that nothing has jammed in the DVD player. Check that there are no mechanical grinding noises coming from the DVD player when it is in operation.
Check that the disc can be inserted and ejected without problems.
Note! Only one disc at a time may be loaded in the DVD-player.
Check that the transport protection disc, which is supplied with system at delivery, is not in the DVD-player.
Was a fault detected?
Yes - Verification
No - Checking the function
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Checking the function
- Select the DVD-player as source for one of the screens and press on the remote control's PLAY button.
Check that picture is shown and sound is heard at playback.
Note! If there is a picture but no audio in one or both of the headphones, see other fault tracing.
If picture and sound are shown, start-up of the system, DVD-player, and screens is OK.
Is there a picture?
Yes - No Fault Found
No - Checking the cable and component
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Checking the cable and component
Check the leads for video signals between the TV-receiver and rear seat entertainment module (RSE) for short-circuiting to voltage, short-circuiting to ground, and open circuit. There are two video leads for each screen. Regards the cables from rear seat entertainment module (RSE), terminals #E10 and #E11 for left screen as well as terminals #E22 and #E23 for right screen.
For more information, see wiring diagram and signal description.
Other information
- Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Continue - Verification
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Checking CAN cables
Hint: If the power supply and ground to the screen are working properly but the screen has no contact with the rear seat entertainment module (RSE)/DVD player via the CAN network, the screen will come on in LOCAL mode at start-up. Then neither sound will be heard nor picture shown at playback from DVD-player to this screen. Menus available locally in the screen can be accessed.
Check if the screens are activated in LOCAL-mode, which means that there is malfunction on the CAN-leads.
Check the leads for CAN-communication between rear seat entertainment module (RSE)/DVD-player and screens, #E3 and #E4 (left screen) and #E15 and #E16 (right screen, for short-circuiting to voltage, short-circuiting to ground, and open circuit.
In connector D, on rear seat entertainment module (RSE)/DVD-player, there is a bridging of the CAN-net for the right screen. Bridging is in place to enable future expansion of the system with additional control modules. If connector B has been damaged or is disconnected or if for some reason there is no contact between the two ends of the CAN cable jumper, it will not be possible to establish communication with the right screen.
Hint: If a screen is not working, try switching places between the screens/head restraints. If the malfunction remains, this indicates a malfunction either in the leads between the screen's circuit board and the display itself or in the display itself.
For more information, see wiring diagram and signal description.
Other information
- Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Continue - Verification
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Checking wake-up signal
The control module makes three attempts to activate a screen by transmitting a high signal on the cable as a wake-up signal to the screen in question. This takes place according to the following pattern, on the condition that the screen does not reply. Normally only one wake-up signal is sent for the screen to wake up.
If the pattern below appears, the screen is not responding.
- High voltage (approx. 11.5 V) for approx. one second.
- Low voltage (approx. 0 V) for approx. three seconds.
- High voltage (approx. 11.5 V) for approx. one second.
- Low voltage (approx. 0 V) for approx. three seconds.
- Constant high voltage.
Measurement of wake-up signal.
When the ignition is on, the rear seat entertainment module (RSE) performs a simple internal system-check and starts the start-up procedure with the screens. For more information, see Design and Function.
- Measure wake-up signal at the screen. Measure from the rear side of a suitable connector. Do not damage the terminals in the connector. Measure signal that goes to the screen that does not answer the wake-up calls.
- Switch on the ignition. Lighting in the DVD-player's buttons is activated.
- Note voltage of the wake-up signal.
For more information, see wiring diagram and signal description.
Other information
- Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Is there any wake-up signal?
Yes - Checking CAN cables
No - Checking the cable and component
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Checking the cable and component
Take measurements for the screen that is not communicating.
Check the lead for the wake-up signal from rear seat entertainment module (RSE)/DVD-player to screens, #E2 (left screen) and #E14 (right screen), for short-circuiting to ground and open circuit.
Check the connector for rear seat entertainment module (RSE)/DVD-player as well as screens for loose contact, contact resistance and oxidation.
Hint: If a screen is not working, try switching places between the screens/head restraints. If the malfunction remains, this indicates a malfunction either in the leads between the screen's circuit board and the display itself or in the display itself.
For more information, see wiring diagram and signal description.
Remedy as necessary.
Other information
- Signal specification, rear seat entertainment module (RSE), generation 4.3 Signal Specification, Rear Seat Entertainment Module (RSE), Generation 4.3
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Continue - Verification
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