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!
Oops, it't not taped directly to the tube. You can see it taped off to the other bundle, just above the wrap of blue tape. Mystery_plug by egg_salad posted Jun 28, 2018 at 5:16 PM
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"
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?
But anyone knows something about this connector? This is under on-off button cover. I never seen it in use.
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?
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)
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
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.
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.
Here is a pinout of the 8-pin connector I found in a PDF of a troubleshooting manual: VIP_connector by egg_salad posted Jun 28, 2018 at 7:13 PM
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?
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.
I was been today on junkyard and i was lucky enough to find a car with this sensor. This is 06 prius.
