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[Solved] GOLF V 2003 radio RCD 300 - the radio switches itself off on the ignition or whi

jaro88 24318 14
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  • #1 16569656
    jaro88
    Level 10  
    Hello,

    I spent some time reading similar problems with the radio but no problem was identical to mine so I decided to set up a new topic.

    For some time now I have a problem with my factory golfing V (model RCD 300). After turning on the ignition, the radio turns on and normally plays but after a short time (it does not occur after a fixed time only variable) the radio will turn itself off and then it will turn on again or even as if it will blink a few times in a row and continue to play or completely shut down I have to start it again. The same happens during the ride, the radio plays a shorter time sometimes and suddenly turns off, there are moments that after a few such stops will be playing longer while stopping when the ignition is not turned on and I start the radio is playing without any problems all the time. I would like to add that this problem suddenly appeared overnight, with the radio nothing was done or the combined one is connected at the factory, I can not remove this radio and check another one because I do not have a code for it.

    The question is what is the problem, because I suspect that if the radio is playing without turning on the ignition and it does not turn off, I doubt that the radio itself will be damaged? I do not know how it is connected and what is the difference in turning on the radio by turning the key in the ignition and turning the radio on when the ignition is not turned on? If the radio itself was damaged, I would have simply exchanged it for others, but I can not be bothered by the fact that the radio works without any objections without being ignited? I will add that not once during the ride I noticed that, for example, like a radio subwoofer, I sometimes hear how the driver's side speaker is activated. Could it be related to switching off the radio?

    thanks for the help in advance

    greetings
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  • #2 16569730
    jdubowski
    Tube devices specialist
    Probably so-called no contact in the installation, radio cubes or cold solder in the radio itself ...
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  • #3 16569758
    rimot
    Level 29  
    jdubowski wrote:
    Probably so-called no contact in the installation, radio cubes or cold solder in the radio itself ...

    I'm ZA.
    jaro88 wrote:
    I do not have the option of removing this radio and checking another one because I do not have a code for it.

    Did you buy a car without a "book"?

    Radyjka to the car now cost little. The DIN2 end cap will probably also cover the topic.
    I hope you will not get the code here. ;)
  • #4 16569765
    jaro88
    Level 10  
    rimot wrote:
    jdubowski wrote:
    Probably so-called no contact in the installation, radio cubes or cold solder in the radio itself ...

    I'm ZA.
    jaro88 wrote:
    I do not have the option of removing this radio and checking another one because I do not have a code for it.

    Did you buy a car without a "book"?

    Radyjka to the car now cost little. The DIN2 end cap will probably also cover the topic.
    I hope you will not get the code here. ;)


    I do not have the original book from the car, only what was the service book. I do not need a code for the radio, as I will buy the second one the same because the prices of these radios are low so it's not a problem. I just wanted to find out if it makes sense, because if it's not the fault of the radio, why do I need two? :)
  • #5 16570020
    jdubowski
    Tube devices specialist
    jaro88 wrote:
    I just wanted to find out if it makes sense, because if it's not the fault of the radio, why do I need two?


    Even if the problem lies in the connections, I can not imagine the diagnosis without taking out the radio ...
  • #6 16570039
    jaro88
    Level 10  
    jdubowski wrote:
    jaro88 wrote:
    I just wanted to find out if it makes sense, because if it's not the fault of the radio, why do I need two?


    Even if the problem lies in the connections, I can not imagine the diagnosis without taking out the radio ...


    I have already bought a second RCD300 radio (with a code for PLN 70) :) in the worst case, if the problem of shutdown does not disappear I will have a radio in which the buttons are not used ;)
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  • #7 16576757
    jaro88
    Level 10  
    Yesterday I mounted this second radio and the problem is still the same if I turn on the ignition the radio will play for a while and turn off if I turn off the ignition and turn on the radio normally without any problems. So it is not the fault of the radio. I also noticed that less and less often the radio turns on when I turn on the ignition and does not turn off with it. Now, what's next? What module / driver should be replaced to get rid of the problem?
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  • #8 16576881
    jdubowski
    Tube devices specialist
    jaro88 wrote:
    Yesterday I mounted this second radio


    Cubes have been tricked into some Contact For assembly?
    Relevant fuses removed and inserted back?

    jaro88 wrote:
    Now, what's next? What module / driver should be replaced to get rid of the problem?


    Probably no module or driver, I suggest you check the power connection of the radio.
  • #9 16576933
    jaro88
    Level 10  
    jdubowski wrote:
    jaro88 wrote:
    Yesterday I mounted this second radio


    Cubes have been tricked into some Contact For assembly?
    Relevant fuses removed and inserted back?

    jaro88 wrote:
    Now, what's next? What module / driver should be replaced to get rid of the problem?


    Probably no module or driver, I suggest you check the power connection of the radio.



    Fuses tested both in the car and on both radios. As for the ISO bar it is in perfect condition, no loosening or raids as well as input pins on both radios. If the problem was with the power supply, why is the radio playing without any anomalies if I turn it on when the car is not on the ignition? The problem only occurs when the ignition is switched on. I do not think there are two separate cables for the radio supplying only one?
  • Helpful post
    #10 16577008
    jdubowski
    Tube devices specialist
    jaro88 wrote:
    Why is the radio playing without any anomalies if I turn it on when the car is not on the ignition?


    Because the car is standing and the lack of any shocks.

    jaro88 wrote:
    I do not think there are two separate cables for the radio supplying only one?


    Either there are two - one is still 12V and the other one appears after switching on the ignition or one and the CAN bus is connected to it. In a car from 2003, you're probably dealing with the first option (two power supplies).
  • #11 16577024
    jaro88
    Level 10  
    jdubowski wrote:
    jaro88 wrote:
    Why is the radio playing without any anomalies if I turn it on when the car is not on the ignition?


    Because the car is standing and the lack of any shocks.

    jaro88 wrote:
    I do not think there are two separate cables for the radio supplying only one?


    Either there are two - one is still 12V and the other one appears after switching on the ignition or one and the CAN bus is connected to it. In a car from 2003, you're probably dealing with the first option (two power supplies).


    1. It's not like the car is standing and no shocks the problem with switching off the radio appears as soon as I turn the key, the engine does not have to be fired.

    2. I will check the multimeter what happens to the power supply after turning the key in the ignition.
    Added after 1 [hours]:
    I took voltage measurements on 15 (+ 12V) 9 (Can HIGH) and 10 (Can LOW) pins on a radio mounted

    The power supply on pins 15 and 16 was all the time when I turned on the ignition, the power did not happen for a second, the multimeter always indicated about 12.2 V

    On the ignition of the 9 Can High pin, the multimeter showed a voltage of 0.2 V and at pin 10 Can Low 11 V

    After switching on the ignition:

    Voltage at pin 9 about 0.2 - 0.3 V
    Voltage at pin approx. 4.5 V

    I was checking if the radio turned off by itself, there was a voltage drop on either of the pins, but there was no anomaly. On the power supply, the multimeter always showed 12V, the remaining pins were unchanged. So I'm beginning to doubt that the problem may be somewhere in the wires or on the radio since both radios behave the same. Can it be the fault of Can Gateway if it is not always able to turn on the radio after turning the key, but this is practically never the case and I have to turn the radio on manually? I would like to have these CAN cables disconnected, but in this case I will probably highlight the radio: / and turn it off automatically after 30 minutes if I accidentally forgot to turn it off.

    Adds a photo of the ISO block and the RCD300 radio diagram

    GOLF V 2003 radio RCD 300 - the radio switches itself off on the ignition or whi
    GOLF V 2003 radio RCD 300 - the radio switches itself off on the ignition or whi
  • #12 16579269
    jaro88
    Level 10  
    I found material about the CAN bus, but I do not know if I understand it all well, but maybe I have a CAN LOW with a plus and it causes all the fuss?

    e) Short-circuit of CAN_L or CAN_H with positive supply
    In this type of damage, the CAN bus goes into a single-wire mode
    work. The voltage on the wire shorted to the plus of the power supply is 12 V or 5 V.
    In such situations, it is possible to damage electronic circuits.

    Source:
    http://www.iee.put.poznan.pl/wydawnictwa/wyda...ersity%20of%20Technology_79/!31_4_Jajczyk.pdf " target="_blank" rel="nofollow noopener ugc" class="postlink inline" title="" > http://www.iee.put.poznan.pl/wydawnictwa/wyda...ersity%20of%20Technology_79/!31_4_Jajczyk.pdf
  • #13 16613501
    jaro88
    Level 10  
    Today my friend did a CAN and radio diagnostics and I have the following error codes

    CAN diagnosis: | error code
    1/2 Data bus display - open circuit | 1305
    2/2 Radio - open circuit | 1304

    Diagnostics of Radio:

    1/2 Antenna on the radio - closed 856
    2/2 No information on the type of fault - closed | 821

    I do not know what's next, because it looks like the radio loses communication,

    Description of error codes can also be found on the ross tech page http://wiki.ross-tech.com/wiki/index.php?titl...lt_Codes&until=01426&pageuntil=01423#mw-pages

    01304 - Radio

    01304 - Radio: No Signal / Communication
    Possible Symptoms
    Reduced Functionality
    Possible Causes
    Communication from / to Radio faulty
    Wiring / Connectors from / to Radio faulty
    Possible Solutions
    Check Communication from / to Radio
    See Measuring Value Blocks (MVB)
    Check Wiring / Connectors from / to Radio

    01304 - Radio: Implausible Signal
    Possible Symptoms
    Reduced Functionality
    Possible Causes
    Communication from / to Radio faulty
    Radio Coding incorrect
    Possible Solutions
    Check Communication from / to Radio
    See Measuring Value Blocks (MVB)
    Check Radio Coding
  • Helpful post
    #14 16780015
    Pati
    Level 27  
    Hello! I have a Golf 6 radio touch and the same happens with the fact that I do not have to wait so much and the radio turns on and off mainly as the key is in the ignition. After the diagnosis of the VIA, how the information about S-contact with CAN changes the state despite the lack of such causes, and the information under the name S-kontact (unless the note "physically") remains at rest. Most likely, the module under the steering wheel pours such garbage on the CAN. I have not taken a hard time so if anyone has any suggestions I will listen to it ;) . Greetings!
  • #15 17190100
    jaro88
    Level 10  
    In the end, the problem was solved, the car electronics found the problem of wine was in the ignition, the radio did not receive a back-up current and that's why there were such symptoms now everything works as it should :)

Topic summary

The discussion revolves around a malfunctioning RCD 300 radio in a 2003 Golf V, which intermittently turns off after the ignition is activated. The user initially suspected issues with the radio itself but later confirmed that the problem persists even after replacing the radio. Various suggestions were made, including checking for poor connections, fuses, and the power supply. The user conducted voltage measurements and found no anomalies in the power supply when the ignition was on. Eventually, diagnostics revealed error codes indicating communication issues with the radio, leading to the conclusion that the problem stemmed from the ignition not providing backup current. After addressing this issue, the radio functioned correctly.
Summary generated by the language model.
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