Anyone with AT and a CAN sniffer? - Toyota Yaris Forums

CTScott · 10-10-2013, 05:45 PM

Ah, I was just checking the electronic parts catalog for Europe, and it shows that there were no second generation automatic transmission Yaris built in France, so it may be that your cluster completely ignores those AT related commands.

That made me just think to try my European cluster on my test bench and it does not respond to the AT commands.

For the dome light, the Body ECU drives it and although I can't identify the 3 terminal driving device, I would say that by its size that it should be able to handle 1A.

dj92 · 10-11-2013, 09:36 AM

Quote:

Originally Posted by CTScott

For the dome light, the Body ECU drives it and although I can't identify the 3 terminal driving device, I would say that by its size that it should be able to handle 1A.

Can you take a photo of its marking?
I am a bit into this switching stuff ;)

There seems to be a relay inside the Body ECU, the pins on the dome light connector it is connected to are not used, the resistance is 180 Ohms if I remember correctly and letting current flow through it results in a "click".
I could not figure out what it should switch

CTScott · 10-11-2013, 12:36 PM

Quote:

Originally Posted by dj92

Can you take a photo of its marking?
I am a bit into this switching stuff ;)

There seems to be a relay inside the Body ECU, the pins on the dome light connector it is connected to are not used, the resistance is 180 Ohms if I remember correctly and letting current flow through it results in a "click".
I could not figure out what it should switch

When I have an opportunity I will pull one apart and snap a pic.

dj92 · 10-12-2013, 05:35 PM

(I will begin to work off my questions I have gathered in the last months if you are comfortable with this)

I have discovered 3 female connectors I struggle to identify (maybe I can use them for own projects).
These are one behind the shifting stick and two between stereo and AC.
I checked the manual's EWDs, but I could not track them really down.

The connector behind the shifting stick has one row of wires with a 0,1" spacing (2,54mm).
The colours and what I have found out up to now:

White - GND
Grey - 12V if headlight is on
Cyan/ mint green
Yellow - 12V IGN
Magenta - 12V IGN
Blue
White with black stripes
the 8th slot is not used.

The first connector between stereo and AC has two rows and looks like a shielded audio cable is connected to it.
It seems to belong to the stereo, but what confuses me is the fact that there is exactly one cable that looks like this on the radio connector and what looks like its other end leads to the aux connector.
Maybe it's a Y-cable?

And what confuses me most:
The 3rd connector which has about 5 pins and 3 wires.
The wire in the middle has an impedance of about 5 to 10kOhms.
The voltages are:

ACC off: 0V
ACC on: 3..5V
IGN on: 12V
IGN->ACC: slowly dropping to 3...5V (maybe a capacitor discharging?)
The other two wires are connected to GND.

I have pulled fuses and found out that it gets current via the ACC-fuse when in ACC, when IGN is on, its the AM2 fuse.

Additionally: The US manual does not mention the seat heating wiring (fuses: SHTR 1 and SHTR 2 iirc)
Does someone have access to information about this?

Thanks in advance!

10-10-2013, 05:45 PM	#1
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Ah, I was just checking the electronic parts catalog for Europe, and it shows that there were no second generation automatic transmission Yaris built in France, so it may be that your cluster completely ignores those AT related commands. That made me just think to try my European cluster on my test bench and it does not respond to the AT commands. For the dome light, the Body ECU drives it and although I can't identify the 3 terminal driving device, I would say that by its size that it should be able to handle 1A. __________________

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10-12-2013, 05:35 PM	#4
dj92 Embracing Curves View User's Garage Drives: '14 Prius Executive Join Date: Aug 2013 Location: mid-western Germany Posts: 256	(I will begin to work off my questions I have gathered in the last months if you are comfortable with this) I have discovered 3 female connectors I struggle to identify (maybe I can use them for own projects). These are one behind the shifting stick and two between stereo and AC. I checked the manual's EWDs, but I could not track them really down. The connector behind the shifting stick has one row of wires with a 0,1" spacing (2,54mm). The colours and what I have found out up to now: White - GND Grey - 12V if headlight is on Cyan/ mint green Yellow - 12V IGN Magenta - 12V IGN Blue White with black stripes the 8th slot is not used. The first connector between stereo and AC has two rows and looks like a shielded audio cable is connected to it. It seems to belong to the stereo, but what confuses me is the fact that there is exactly one cable that looks like this on the radio connector and what looks like its other end leads to the aux connector. Maybe it's a Y-cable? And what confuses me most: The 3rd connector which has about 5 pins and 3 wires. The wire in the middle has an impedance of about 5 to 10kOhms. The voltages are: ACC off: 0V ACC on: 3..5V IGN on: 12V IGN->ACC: slowly dropping to 3...5V (maybe a capacitor discharging?) The other two wires are connected to GND. I have pulled fuses and found out that it gets current via the ACC-fuse when in ACC, when IGN is on, its the AM2 fuse. Additionally: The US manual does not mention the seat heating wiring (fuses: SHTR 1 and SHTR 2 iirc) Does someone have access to information about this? Thanks in advance!