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Renault Laguna 2 1.8 16v 2002 - Short circuit in the installation

Ferin 10683 18
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 16761657
    Ferin
    Level 9  
    Hello. In my lagoon two 2002 1.8 16V I have a short circuit, it is leaking about two amps. With the help of the meter, I was able to find the cabin fuse - ALIM UCH - after removing which the leak disappears. I also checked the fuses in the engine compartment and there are two when removed, the short circuit disappears. I wanted to ask where and how to start looking for the cause of the short circuit. Adds photos with marked fuses mentioned above.

    Only the fuses in the cabin are described in the service book, will someone share a link to the description of fuses / relays in the engine compartment?
    Renault Laguna 2 1.8 16v 2002 - Short circuit in the installation
    Renault Laguna 2 1.8 16v 2002 - Short circuit in the installation
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  • #2 16761681
    moto-kord
    Level 28  
    What is your power of 85 or 89 kW?
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  • #3 16761687
    Ferin
    Level 9  
    moto-kord wrote:
    What is your power of 85 or 89 kW?

    115 horses, the conversion factor shows that 85.7 kilowatts. I didn't even know they were 89. Are they very different from each other?
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  • Helpful post
    #4 16761708
    moto-kord
    Level 28  
    Fuse 2
    UCH computer
    10A chip card reader
    The two big ones under the hood
    Fuse 18
    Passenger compartment 1 70A
    Fuse 21
    Electrical disconnection
    Passenger compartment 2 60A
  • #5 16761716
    Ferin
    Level 9  
    So the reader is most likely causing a short circuit?
    Is my inference wrong?
    Gotta pull out and watch carefully, thanks for your help.
  • #6 16761723
    moto-kord
    Level 28  
    The easiest way is to connect a diagnostic device if you have such an opportunity.
  • #7 16761725
    coperfild
    Level 35  
    A colleague is not short-circuited, only the consumption if the fuses are whole, we do not know if he is measuring correctly, after putting the system to sleep.
  • #8 16761774
    Ferin
    Level 9  
    coperfild wrote:
    A colleague is not short-circuited, only the consumption if the fuses are whole, we do not know if he is measuring correctly, after putting the system to sleep.
    I waited about twenty minutes after removing the key, I can check again tomorrow to be sure. If so, I am asking for advice on what and how.
    I do not have an interface to connect the computer, so I will not check it.
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  • #9 16761780
    moto-kord
    Level 28  
    Ferin wrote:
    I waited about twenty minutes after removing the key

    Of course the meter was plugged in and turned on?
  • #10 16761782
    Ferin
    Level 9  
    moto-kord wrote:
    Ferin wrote:
    I waited about twenty minutes after removing the key

    Of course the meter was plugged in and turned on?
    I connected the meter and turned it on only after the aforementioned time, I should connect it immediately after removing the key and check how it changes with the passage of these twenty minutes?
  • Helpful post
    #11 16761788
    moto-kord
    Level 28  
    Ferin wrote:
    should I hook it up right after removing the key and check how it changes with the passage of these twenty minutes?

    That's exactly what you have to do. Everything must sleep on the connected meter.
  • #12 16761794
    Ferin
    Level 9  
    Ahhh, I didn't know, I'll do it tomorrow and let you know the result at the beginning and after twenty minutes. Thanks.
  • #13 16761825
    coperfild
    Level 35  
    It would be good to close the car with the central card, not the key.
    Nice meter, best regards.
  • #14 16763152
    Ferin
    Level 9  
    coperfild wrote:
    It would be good to close the car with the central card, not the key.
    I don't know what you mean, I can lock the car with a key / card or with a button from the central wheel of the handbrake lever.
    coperfild wrote:
    Nice meter, best regards.
    Thanks.

    Today I checked the power consumption again. And so, right after it was turned off with the card inserted, it was charging 3.75A.
    After removing the key, it dropped to 1.25-1.78A after a while (2 minutes approx) 1.51 and after 5-10 minutes to 0.12A.
    Is 0.12A low enough or should it be less after everything is put to sleep
    what should be dormant?

    Well, zonk, because it seems that the short circuit has opened, I am not happy about it because I think something will come back.
    I inserted the card without turning on the engine and it jumped to 3.75A, after removing it, the sequence was as above.
    Sometimes, rarely but still, it happened that I inserted the card and nothing, complete silence, I took it out and put it in
    one more time and everything came alive. Maybe the slot is damaged and sometimes it has something wrong. I have to undress it and watch it.
    Unless you have other suggestions.

    Anyway, thank you to everyone for their help and tips.
  • #15 16763373
    moto-kord
    Level 28  
    Ferin wrote:
    Is 0.12A low enough

    It's good.
    Ferin wrote:
    I have to undress it and watch it.

    Do not disassemble anything. We check the consumption after sleep, no one leaves the car with the card.
  • #16 16764575
    Ferin
    Level 9  
    moto-kord wrote:
    Do not disassemble anything. We check the consumption after sleep, no one leaves the car with the card.

    I did not undress anything, left the battery connected to check if I would start today, before it was discharging.
    Well, so far it is good, although I have the impression that it will come back, rather nothing repairs itself.
  • #17 16765372
    Strumien swiadomosci swia
    Level 43  
    I would have seen the grommets in the door and the flap whether or not broken.
  • #18 16765472
    freebsd
    Level 42  
    Ferin wrote:
    Is 0.12A low enough or should it be less after everything is put to sleep
    what should be dormant?
    Too much. Without an alarm and with the company's radio, similar Renault models use, for example: 0.013 A. If I added an alarm and other radio (decent and properly installed), I would expect a consumption below 0.05 A.
  • #19 16765530
    Strumien swiadomosci swia
    Level 43  
    See if there is this consumption right after the clamp is established.
    I had one that, after switching the ignition on and off, the relay never turned off.

Topic summary

The discussion revolves around a short circuit issue in a 2002 Renault Laguna 2 1.8 16V, where the user identifies a current leak of approximately two amps. The user successfully locates the cabin fuse (ALIM UCH) responsible for the leak and checks fuses in the engine compartment, noting that removing certain fuses eliminates the short circuit. Participants suggest various diagnostic approaches, including using a meter to measure power consumption after the vehicle is turned off and ensuring the system is in sleep mode. The user reports fluctuating current readings, indicating potential issues with the chip card reader or other electrical components. Recommendations include checking for proper fuse descriptions, ensuring correct meter usage, and inspecting door grommets for damage.
Summary generated by the language model.
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