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Open Circuit Squib Driver Side! Red Triangle...

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Sam Dean, Jun 12, 2013.

  1. Britprius

    Britprius Senior Member

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    Should have ask before but you mentioned you checked the car with Techstream. Do you have the mini VCI reader with Techstream? as you can check the battery fan operation with this once you have replaced the 12 volt battery.

    John (Britprius)
     
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  2. Sam Dean

    Sam Dean Member

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    yes indeed - i have a mini-vci cable which i've been using in conjunction with techstream....to be honest though i'm pretty sure i'm not using its fullest capacity, for example i dont know how to clear codes, etc.

    I'm going to probably order the Bosch battery that you mentioned tomorrow morning. In the meantime, if you could let me know of the step-by-step instructions on how to fit it, this would be a great help.

    many thanks
     
  3. Britprius

    Britprius Senior Member

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    To save me writing it all out if you click on the link below you will find complete instructions with pictures the only thing that is different is the actual battery you will be fitting.

    I use a mobility battery in my own car and have a long post on fitting these batteries in a Prius but feel for your purposes sticking with an original fit battery with no modifications would suit you best.

    12V Battery Replacement-- A Preemptive Strike

    John (Britprius)
     
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  4. Sam Dean

    Sam Dean Member

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    Thanks John - I'll let you know once i've fitted it.

    By the way - can this multi-meter test the actual ECU for the airbag? i.e. are there points that i could touch with these connectors in order to establish a working order etc?
     
  5. Britprius

    Britprius Senior Member

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    No as far as your concerned you cannot check the ECU with a multimeter.

    As a retired electronics engineer there are tests that can be carried out with a meter but these are limited. The Prius has a very sophisticated self check system via Techstream covering just about all aspects of the electronics involved.

    Fortunately the ECU's are now available from breakers if replacements are needed at reasonable prices rather than going to the dealers.

    PS. Its getting late so i'm calling it a night. I'll log in tomorrow.

    John (Britprius)
     
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  6. Sam Dean

    Sam Dean Member

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    also, how would i test the battery fan using techstream and the mini-VCI cable? i'm struggling with using it beyond doing a health check and individual scans...
     
  7. Sam Dean

    Sam Dean Member

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    thanks John - okay, catch you tomorrow - sleep well, and thanks again. N'nite
     
  8. Britprius

    Britprius Senior Member

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    The battery fan is controlled by entering the HV battery ECU and (from memory) select utility, then select fan speed control, select the speed you wish the fan to run at. You will hear the fan running on he mid to higher speeds the low speeds being very quiet.

    To remove fault codes, click on the code then click on the button with the pencil eraser on it (bottom left) it will then give you some options and click erase.

    John (Britprius)
     
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  9. Sam Dean

    Sam Dean Member

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    ah yes! Alot of this sounds familiar from when i was playing about with it... I'll have a look.

    I've ordered the Bosch battery today and so just waiting on this. In the meantime, I'll test the fuses when i get a moment, and report back to you of what i find.

    As soon as I've fitted it - I'll move onto the next stages of testing. Mind you, whilst I'm at it, i may aswell check the condition of the battery fan aswell....for this, do i need to disable the Hybrid Battery? or will the disabled 12v battery be enough for it to be safe?

    many thanks
     
  10. Britprius

    Britprius Senior Member

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    If the car can be made ready (with ready light on dash) do this and connect Techstream and follow instructions in post 28 if all is well (no fuses blown) you will hear the fan running.

    John (Britprius)
     
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  11. Sam Dean

    Sam Dean Member

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    okay - the suspense is killing me - i'm going out to the car now and will feedback in a moment....
     
  12. Sam Dean

    Sam Dean Member

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    John, you've found a friend for life!

    That was awesome! The fan worked like a treat!

    Okay - now we need to figure this open squib circuit and we've got it covered!
     
  13. Britprius

    Britprius Senior Member

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    Do all of the other buttons on the steering wheel work. I do not know what buttons you have because I have the Tspirit version with many more buttons on the wheel. If some of the buttons do not work it may well be the clock spring that is giving trouble.
    Again I should have asked this before, but apart from the dash warning lights does the car run and drive ok.

    John (Britprius)
     
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  14. Sam Dean

    Sam Dean Member

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    i havent checked the other buttons - will have a peep in abit... i do know that the horn wasnt working until i replaced the fuse.

    The car drives amazingly - these cars are so smooth! The back tyre does make abit of an intermittent ticking sound, and as it happens it doesn't have a tyre screw cap fitted on it either, and plus that particular tyre (back-right) looks quite worn down. To add to this, the round circle with the exclamation mark recently came on the dashboard aswell, which i'm assuming is to do with a slightly deflated tyre (?). I ordered a small tyre pump, and some tyre screw caps, whilst I was ordering the battery.

    :)
     
  15. Britprius

    Britprius Senior Member

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    My car does not have the tyre pressure monitoring system so I cannot say but it should be in the handbook if you have one.
    Like you I do feel we are getting somewhere.Let me know on those buttons.

    There is another post on this forum (today) with the same problem with the airbag so keep an eye on that.
    From what I understand the airbag ECU would normally be replaced after an airbag deployment. The thing we do not know is weather this has been done.
    Were there any lights on the dash when you bought the car?

    John (Britprius)
     
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  16. Sam Dean

    Sam Dean Member

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    We're definitely getting somewhere John - thank you so much for your support.

    Okay, i just checked the steering buttons and they work fine. One button i wasnt sure of was one with a diagram of a car and an arrow circulating within in. When i pressed it, it made a sound as though the car was passing wind (hehe).

    I think we're getting closer to the root of the problem. Let's nail it John!

    This ECU thing - how can i get to it, and is there any way for me to test it, on its own?
     
  17. Britprius

    Britprius Senior Member

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    Unfortunately there is no way you can check it yourself, and at this stage I am still not certain that is where the problem is. After all the ECU is reporting a problem so eliminating that problem must be the first goal. The airbag must have been replaced on the steering wheel assuming a heavy impact on that side of the car, and if this has not been "electrically" connected properly in the steering wheel this would give the fault you are seeing. Let me see what I can come up with for you to check rather than throwing money at parts you may not need.

    John (Britprius)
     
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  18. Sam Dean

    Sam Dean Member

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    just a thought ...

    i dont think there's an airbag in the actual steering wheel - how can I check this safely? Or maybe, like you say, it just wasn't connected correctly. Unsure if I mentioned this before, but I think this B1801 error was down as "Current" and "History" - so maybe they tried to fix it - it went away for abit and then returned? Probably because they only used a temporary fix?

    also - i've come across a technique which talks about using a bent paper-clip in the fuse (?) to reset the airbag light (?) - unsure if this would work though

    Okay, see what you can find out - you're right - it wouldn't be any good just buying parts without certainty.
     
  19. Britprius

    Britprius Senior Member

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    There is an airbag in the steering wheel, it's the center black pad and I am certain it has airbag impressed on it. After my evening meal I will give you some more information and work you can carry out. You can reset the light with Techstream but if the fault is still there it will come back on immediately.

    John (Britprius)
     
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  20. Sam Dean

    Sam Dean Member

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    Okay thank you.

    I saw a clip on youtube (
    ) which made me think that this could be one possible issue with this car. It relates to what you mentioned (the clock spring) - maybe its damaged and not fully connected.

    Enjoy your meal :)