Mystery connector behind lower central panel

Discussion in 'Gen 2 Prius Main Forum' started by egg_salad, Jun 28, 2018.

  1. egg_salad

    egg_salad Active Member

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    Who doesn't like a good mystery?

    I pulled off the lower central panel, the one containing the under-dash power point. Behind it, on the driver's side of the car, is a piece of raw steel tubing, maybe 20 degrees off vertical. Taped to that tubing is a 3-pin female connector, with black, yellow, and brown wires. It is plugged into nothing, and there is no matching male connector anywhere nearby.

    Now, I freely admit I'm not good at reading vehicle wiring diagrams. It also may be less than helpful that the wiring diagram I have is for an '04, and my car is an '08. But I surely can not find any reference to this connector anywhere in the wiring diagram.

    So what's it for? Is it for an option I don't have, or maybe a feature for markets other than the US?

    Whoever solves this mystery gets 10,000 Internet points!
     
  2. bisco

    bisco cookie crumbler

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    pics or it didn't happen!:p
     
  3. bisco

    bisco cookie crumbler

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    could be for an option you don't have, back up cam? 3 door sks? cruise control? dual zone a/c?
     
  4. TMR-JWAP

    TMR-JWAP Senior Member

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    Maybe this drawing shows it as Ground Point II (ii or eye-eye). Kind of odd for what I would expect for a ground point. Maybe I'm not looking at it right. Can't find anything labelling that small connector hanging down to the right of it.

    Location labelled as "Instrument Panel Brase LH"

    IMG_0959.JPG IMG_0960.JPG
     
    #5 TMR-JWAP, Jun 28, 2018
    Last edited: Jun 28, 2018
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  5. egg_salad

    egg_salad Active Member

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    My (admittedly limited) experience with Toyota wiring diagrams suggests that they use the same line drawings worldwide, and if nothing in the USA wiring diagram points to a certain connector, it simply isn't used in USA versions.

    Edit: I looked at the connector diagrams. The only two natural (white) 3-pin connectors shown are B16 and O2. B16 goes to the passenger front Seat Buckle Switch and is in a completely different location. O2 is listed as "Option Connector (Glass Breakage Sensor)",

    The latter is interesting. The diagram shows it in an entirely different location, but it is shown on Page 247 as having the correct color wires. Is it perhaps for a dealer- (or port-) installed alarm?
     
    #6 egg_salad, Jun 28, 2018
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  6. pashko90

    pashko90 Junior Member

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    I did seen module on this spot ones. It was been black box with mic. Glass smashing sensor.
     
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  7. egg_salad

    egg_salad Active Member

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    Aha! that makes sense with what I got from the wiring diagram!
     
  8. TMR-JWAP

    TMR-JWAP Senior Member

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    Nice. Does it look like it would fit this:

    s-l1600.jpg
     
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  9. pashko90

    pashko90 Junior Member

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    But anyone knows something about this connector?
    This is under on-off button cover. I never seen it in use.
     

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  10. egg_salad

    egg_salad Active Member

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    Well, that's the location shown in the 2004 diagram for where the Glass Breakage Sensor should be. And the wiring colors are correct. What year car is in that photo? is it a 2008?
     
  11. pashko90

    pashko90 Junior Member

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    I just notice, what we talking about same 3 pin connector, but on 04-05 it located under on-off button cover, on 06-09 on the bottom of the console. Glass breakage sensor have more pins.
    My current car is 05 prius(i have few them)
     
  12. TMR-JWAP

    TMR-JWAP Senior Member

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    Found another photo of a new oem unit. Looks to have a couple wire harness/adapters. The sensor itself looks to be an 8 pin, but the other end of the harness looks different and splits into 2 connectors, not sure whats in the bubble wrap

    s-l1600 (1).jpg
     
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  13. egg_salad

    egg_salad Active Member

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    So the white connector towards the right of the photo is the 8-pin connector that Pashko spoke of. The foam-covered connector close to the center looks like it could mate to the connector I've found, but it's hard to say for certain.

    What Pasko said also makes sense. The location for 04-05 would be hard to get to when adding the alarm, so it was moved to the new location for 06+ to make the sensor easier to install.
     
  14. pashko90

    pashko90 Junior Member

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    Seems like i was been wrong, your connetor is 3 pin connector, alarm is 8 pins. TMR-JWAP just did add photo of this sensor and you can see connector on one of his photos. This is different one. Seems like its same connector with my under start-stop button(colors of wires are same) with yours near by tube.
     
  15. egg_salad

    egg_salad Active Member

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  16. pashko90

    pashko90 Junior Member

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    I did try to find it in FSM. Where is it? Does it have wiring diagram? I will gonna have access to 10+ priuses on this weekends, i can check them. Maybe some car have it installed?
     
  17. egg_salad

    egg_salad Active Member

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    What I wrote above was that I found the reference to the Glass Breakage Sensor on page 247 of the 2004 wiring diagram. I found no reference to the alarm itself.

    What I learned from poking around Google is that ALL G2 Prius have an alarm built in to the ECU. HOWEVER, it is not enabled by default. So if you requested an alarm from the dealer, that involved adding the GBS and going into the ECU via TechStream (or whatever other dealer software) and enabling the alarm.
     
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  18. pashko90

    pashko90 Junior Member

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    We are 100% right about glass brakage sensor. 3 pin connector with same colors as on my pic
     

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  19. pashko90

    pashko90 Junior Member

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    I was been today on junkyard and i was lucky enough to find a car with this sensor. This is 06 prius. 20180701_135050.jpg 20180701_135118.jpg 20180701_135143.jpg 20180701_135200.jpg 20180701_161705.jpg 20180701_161714.jpg 20180701_161721.jpg 20180701_161732.jpg 20180701_161744.jpg 20180701_161754.jpg
     
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