External temp. Display & Trip Computer

[bung206]

Hi Everyone,

I've recently purchased a pre-used 2006 3 Door Lift-Back Toyota Yaris w/ 4 speed automatic transmission.

If you look really closely at the dash, you can see there are provisions in it for displaying the external temperature, and also a trip computer.

I know that with certain vehicles, you can simply use the manufacturer diagnostics to enable features to get it to work, while getting the option from factory may have been prohibitively expensive.

Can someone tell me if this is the case for this car? Can I acquire a Toyota TIS Techstream cable and software and enable the temp display/trip computer?

I searched this but only came across one thread from 2006 and that doesn't really answer my question.

[CTScott]

Hi Everyone,

I've recently purchased a pre-used 2006 3 Door Lift-Back Toyota Yaris w/ 4 speed automatic transmission.

If you look really closely at the dash, you can see there are provisions in it for displaying the external temperature, and also a trip computer.

I know that with certain vehicles, you can simply use the manufacturer diagnostics to enable features to get it to work, while getting the option from factory may have been prohibitively expensive.

Can someone tell me if this is the case for this car? Can I acquire a Toyota TIS Techstream cable and software and enable the temp display/trip computer?

I searched this but only came across one thread from 2006 and that doesn't really answer my question.


No - Unfortunately with the Yaris different instrument clusters have different firmware (which techstream can not change), so even though the hardware is there for a feature you can not enable the feature. Via Techstream the only adjustments that can be made for the cluster are related to the warning chimes for the seatbelts, etc.

[bung206]

Hi CTScott, thanks for the info.

So the only solution is to buy a new gauge cluster from one that had the trip computer/temp display from factory?

I have inspected the real-time data stream through the OBD2 port with a generic scanner, and there is no data coming from the ECU which shows the fuel usage or external temperature.

Do you know what is involved in getting it to work?

[CTScott]

Other featured clusters can be swapped in and most, if not all of the features will work. I have experimented with clusters from Japan (digital and analog), Australia (digital), and Europe (digital) with US market Yaris. Outside temp on a Japanese cluster for example, works, but requires extra wiring to connect the ambient temperature sensor (which normally is only connected to the AC ECU) to it. MPG on the JDM cluster works, as the cluster actually requests the extra data it needs from the ECM.

The only issues have been with clusters that were off cars that had ABS, used on cars that do not. Some of the ABS equipped clusters get the speed data from the ABS wheel speed sensors, rather than from the transmission's speed sensor.

[bung206]

What about the odometer milage? If you change it to one that has lower miles travelled will it still stay the same? Or is the miles travelled data stored elsewhere also, and updated into the instrument cluster upon first power on?

[CTScott]

What about the odometer milage? If you change it to one that has lower miles travelled will it still stay the same? Or is the miles travelled data stored elsewhere also, and updated into the instrument cluster upon first power on?

The mileage is stored only in the cluster, so when you swap it the mileage will be wrong. Toyota Dealers can not change the odometer (and here in the states if you replace the cluster with one with different mileage a sticker is placed on the car near the VIN tag and the fact that the mileage is different than what reads has to be reported to the motor vehicle department). The mileage is reprogrammable with some special tools and knowledge of the checksumming of the data. I actually figured out how to do so and can reprogram the cluster mileage.

[cali yaris]

Does the JDM cluster display degrees C?, that would be inconvenient for those of us who are math-challenged. :smile:

[CTScott]

Does the JDM cluster display degrees C?, that would be inconvenient for those of us who are math-challenged. :smile:

Yes. Degrees C and Kmh only. My conversion module works with it though to make the speedometer read in MPH and the odometer increment in Miles.

[jasonk1123]

Hi there

Sorry to open thread up again

I have a digital cluster, it has the spaces in the clusters for the mpg(here would be km/l) what would i have to do to get it work?

[CTScott]

Hi there

Sorry to open thread up again

I have a digital cluster, it has the spaces in the clusters for the mpg(here would be km/l) what would i have to do to get it work?

It turns out that the all digital clusters have the space to display it, but in many areas it is not implemented. If you have one where it is not, you can't enable it without switching to one that has it enabled.

[jasonk1123]

ah, thanks very much(time to look for a new cluster)
And a bluetooth OBD2 adapter wont work?

[JudgeM]

Bung206,

Hello to a fellow New Zealander. I can answer all of your meter questions because I have been playing around with a few meters.

I have a JDM Vitz that comes with the analog meters. I've been trying to get a digital meter into it because the viewing angles are much better. So far I've bought a UK and AUS digital meter.

UK meter shows temperature and fuel consumption. My car has a temp sensor but its not wired to the meter so I have to manually wire it. Main problem with the UK meter is that I get a transmission error and beeping continuously even when the car is off. So at the moment I am trying to fix this

I recently bought an AUS meter (it will be like the one you have). It works fine in my car BUT it doesnt show CEL and OIL light. Im in the process of investigating this. It has the same display components such as the UK meter but it doesn't show fuel consumption and temperature. I am pretty sure this is because the circuitry does not have this feature but to save costs they used the same display components as the UK one. Today I will be trying to use Techstream to see if it can be turned on, but I doubt it.

The UK meter is the most high spec meter but unfortunately the transmission error makes it rather unusable. I managed to reprogram it to display fuel consumption in km/l. It can display speed in mph or kmh but the odometer is in miles and cannot be changed. I have ordered another UK meter because I think the UK meter I have now is faulty.

I will post my findings on the forums once I finish the investigation

Where abouts in NZ are you based Bung206 ?

[japle]

anyone tried to light up the shifters position? scott, i tried a lot of ways to light it up, but none seem to work. by the way scott, which country did you get this digital cluster from?

[CTScott]

anyone tried to light up the shifters position? scott, i tried a lot of ways to light it up, but none seem to work. by the way scott, which country did you get this digital cluster from?

That cluster came from Japan. I am working on trying to get a JDM ECM to check the messaging differences between the ECM and cluster.

[JudgeM]

Just an update guys with my meter swapping.

I bought another UK meter, turns out the fault UK meter I bought before was one from an MMT model Yaris. Obviously my car bening manual meant the cluster was freaking out as it was not receiving MMT signals. Thats why it just kept on beeping. The new meter I got I made sure was from a fully manual model.

I just installed it last night and whoopee :thumbup: it works. I also managed to get the CEL and oil light going. (its all in the wiring, JDM wiring on the 16pin connector is totally different to EU and US)

The next task I have to do is get the ambient temp sensor going. I mentioned this in my other post and CTscott advised me on where I can find the wirring.

So in theory all I have to do is take the wire from the AC ECU and hook it up to the missing part of the meter connection ?

Can someone please confirm in the attached picture that I have found the correct connector which contains the ambient temp sensor wire on the AC ECU ?
(sorry not great picture. it was an awkward position to reach in the footwell)

[CTScott]

That is the correct connector and you do simply tap the ambient temp sensor wire and bring it up to the cluster.

[JudgeM]

That is the correct connector and you do simply tap the ambient temp sensor wire and bring it up to the cluster.

I tried this tonight and it didn't work. Could you clarify which wire needs to go up to the cluster. If I understood correctly from the wiring diagram its the white wire. Is it just one wire ? or more than one ?

[CTScott]

I tried this tonight and it didn't work. Could you clarify which wire needs to go up to the cluster. If I understood correctly from the wiring diagram its the white wire. Is it just one wire ? or more than one ?

I don't remember if we ever verified that your car actually has the sensor behind the bumper?

The wire is white and should be between a blue and a grey wire. And, it is just that one wire that goes up to the cluster.

[japle]

Just an update guys with my meter swapping.

I bought another UK meter, turns out the fault UK meter I bought before was one from an MMT model Yaris. Obviously my car bening manual meant the cluster was freaking out as it was not receiving MMT signals. Thats why it just kept on beeping. The new meter I got I made sure was from a fully manual model.

I just installed it last night and whoopee :thumbup: it works. I also managed to get the CEL and oil light going. (its all in the wiring, JDM wiring on the 16pin connector is totally different to EU and US)

The next task I have to do is get the ambient temp sensor going. I mentioned this in my other post and CTscott advised me on where I can find the wirring.

So in theory all I have to do is take the wire from the AC ECU and hook it up to the missing part of the meter connection ?

Can someone please confirm in the attached picture that I have found the correct connector which contains the ambient temp sensor wire on the AC ECU ?
(sorry not great picture. it was an awkward position to reach in the footwell)

Can you please take a picture of the connectors plugged to the instrument cluster for both sides? I wanna know what is different. Thanks

[JudgeM]

I don't remember if we ever verified that your car actually has the sensor behind the bumper?

I did find the sensor. I will try again tonight. I hope I dont have a fake sensor i.e. they put the sensor housing there but not the actual sensor in it.

[CTScott]

I did find the sensor. I will try again tonight. I hope I dont have a fake sensor i.e. they put the sensor housing there but not the actual sensor in it.

If you saw it, it should definitely be there. Did you have the white wire with the blue on one side and grey on the other?

[JudgeM]

Can you please take a picture of the connectors plugged to the instrument cluster for both sides? I wanna know what is different. Thanks

Apa khabar japle.

I think the picture of what you want can be found in my other post : http://http://www.yarisworld.com/forums/showthread.php?t=49406

I will also be doing a full write up once I've sorted out everything.


Great news. I've got the ambient temp sensor working as well. It was a bit of a trial and error but I got it to work.

Thing is now everything works but there are still some wires that need to be connected and I dont know what they are for. I think they are for some warnings that cant be seen when the car is in ignition/engine off.

So far I have managed to find the following wire and their functions. Can some one please help me fill in the missing pieces:

16pin connector:
Black - CEL (check engine )
Yellow - Oil pressure
Pink - Hi beam
Red - Front fog
Orange - GND
Gray - Right turn signal
light green - lights on
blue - battery
violet - ?
dark green - ?
brown - ?
light blue - ?

I left of some of these unknown connections and everything still works so I am confused as to what they are for. I need to know since the wiring pinout is different to the JDM meter.

[CTScott]

This is what I have documented for the 16 pin connector on Japanese market cluster:

1. Light Blue - Alternator Charge Warning
2. Violet - Brake fluid level warning
3. No connection
4. Black - CEL
5. White - Auto Headlight Warning
6. Sky Blue - Front Fog
7. Red - Rear Fog
8. Light Green - Left Turn Signal
9. Orange or Beige - Passenger seat belt warning
10. No Connection
11. Pink - Illumination
12. Yellow - Oil Pressure Warning
13. No Connection
14. Green - Hi Beam Indicator
15. Brown - Right Turn Signal
16. Green - Headlight Indictor

[JudgeM]

This is what I have documented for the 16 pin connector on Japanese market cluster:

1. Light Blue - Alternator Charge Warning
2. Violet - Brake fluid level warning
3. No connection
4. Black - CEL
5. White - Auto Headlight Warning
6. Sky Blue - Front Fog
7. Red - Rear Fog
8. Light Green - Left Turn Signal
9. Orange or Beige - Passenger seat belt warning
10. No Connection
11. Pink - Illumination
12. Yellow - Oil Pressure Warning
13. No Connection
14. Green - Hi Beam Indicator
15. Brown - Right Turn Signal
16. Green - Headlight Indictor

This is same as the chart you sent me a while back, unfortunately for JDM meters its not right. The JDM meter has almost sort of reversed wiring pattern to USDM and EUDM.

Thats why I asked for the colors, with that I can make a wiring chart for JDM meters. I have a couple of queries though:

the orange wire, why does it go to the cluster? the passenger seat belt warning is shown on one of the panels next to the ac vent.

some of the colors dont match up with what I get. e.g. the red, pink, light green.

I wonder why Toyota didnt keep their wiring pinouts consistent over regions.

[CTScott]

This is same as the chart you sent me a while back, unfortunately for JDM meters its not right. The JDM meter has almost sort of reversed wiring pattern to USDM and EUDM.

Thats why I asked for the colors, with that I can make a wiring chart for JDM meters. I have a couple of queries though:

the orange wire, why does it go to the cluster? the passenger seat belt warning is shown on one of the panels next to the ac vent.

some of the colors dont match up with what I get. e.g. the red, pink, light green.

I wonder why Toyota didnt keep their wiring pinouts consistent over regions.


That chart is actually directly out of the JDM Vitz wiring diagrams. It looks like your car (which would be considered Asian market, rather than JDM) has different wiring from JDM.

I would inquire with your local Toyota dealer to see if they can print you a copy of the cluster wiring diagram.

[JudgeM]

That chart is actually directly out of the JDM Vitz wiring diagrams. It looks like your car (which would be considered Asian market, rather than JDM) has different wiring from JDM.

I would inquire with your local Toyota dealer to see if they can print you a copy of the cluster wiring diagram.

Thats really odd. My car was imported from Japan. I doubt the dealer can help me with a car thats not sold locally

[CTScott]

Thats really odd. My car was imported from Japan. I doubt the dealer can help me with a car thats not sold locally

Ah, I missed the fact that yours is a Vitz from Japan. In that case, the diagrams that I have should be correct for your car.

[JudgeM]

Ah, I missed the fact that yours is a Vitz from Japan. In that case, the diagrams that I have should be correct for your car.

Unfortunately they're not the same. I will do more probing and show you what I got for my car.

[bennyh253]

does anyone have a dump file from the cluster with the mileage display? I have a few digital clusters to play with and wanted to see the difference in the eeprom my clusters all use 93c56 from yaris 2005 -2010.

[dj92]

You could hook up a logic analyzer to see what is written to the EEPROM while the miles increase.
That'd be probably more interesting than a plain dump ;)

[bennyh253]

I know how to change the odometer just wanted to see the difference between the uk/Japanese clusters with the temp/mileage display and my own to see if I could adjust the program to enable this option. Australian clusters don't have the fuel mileage/outside temp display, but look to have the hardware, with a dump I was hoping to rule out wether I could enable this option by programming the eeprom.

thanks

[CTScott]

I know how to change the odometer just wanted to see the difference between the uk/Japanese clusters with the temp/mileage display and my own to see if I could adjust the program to enable this option. Australian clusters don't have the fuel mileage/outside temp display, but look to have the hardware, with a dump I was hoping to rule out wether I could enable this option by programming the eeprom.

thanks

I have worked with quite a few variants of clusters and the EEPROM only stores mileage related data. The enabling of features is done within the firmware of the microcontroller.

[bennyh253]

ok, there wasn't much information on the eeprom compared with other clusters I have been playing with. Some of the GM clusters I have worked with you can turn on or off and adjust settings via eeprom file.
Thanks for your reply It will save me a lot of messing around

[irakli_86]

Can anyone post a picture of which pin on the cluster connector does the ambient sensor wire plug into please ?