RHD Vitz RS cluster

[Kioshi]

Originally Posted by CTScott

Update on progress with the JDM one:

I can read the vehicle speed from the ECM and send it to the cluster, so the pointer does the correct thing. The issue I am having now is that I can not reliably get it to increment the odo. There are two extra bytes in the CAN message that thus far I can't make sense of (nor find any documentation for). I'll have to do some more watching of data from my 09 to try to make some sense of it.

To increase the kilometers on the odo to the correct ones on my stock cluster?

[CTScott]

Originally Posted by Kioshi

To increase the kilometers on the odo to the correct ones on my stock cluster?

That, and just having the odo function correctly.

[Kioshi]

Is the odo taking a slower time to show accurate kilo/miles traveled? Or just misses a few odometers every now and then?

I dont know if this would help or not....i know my stock cluster (adjusted) the miles/kilos i drove testing out the RS cluster. You could try to see after driving a bit, that if the RS cluster adjusts the miles it just did right after starting up your car again....?

[CTScott]

Originally Posted by Kioshi

Is the odo taking a slower time to show accurate kilo/miles traveled? Or just misses a few odometers every now and then?

I dont know if this would help or not....i know my stock cluster (adjusted) the miles/kilos i drove testing out the RS cluster. You could try to see after driving a bit, that if the RS cluster adjusts the miles it just did right after starting up your car again....?

It's only incrementing 1/10 km every once in a while (like one or two per hour). I am thinking that the extra bytes are some form of security in the packet to make it difficult to modify the odo data.

That auto update is interesting. The ECM separately receives and stores the mileage, so the cluster must grab a delta from the ECM on powerup. So far I have identified one message from the ECM to the cluster and four from the cluster to the ECM (which send the ECM the indicator status).

[Kioshi]

Originally Posted by CTScott

It's only incrementing 1/10 km every once in a while (like one or two per hour). I am thinking that the extra bytes are some form of security in the packet to make it difficult to modify the odo data.

That auto update is interesting. The ECM separately receives and stores the mileage, so the cluster must grab a delta from the ECM on powerup. So far I have identified one message from the ECM to the cluster and four from the cluster to the ECM (which send the ECM the indicator status).

Those extra bytes can be override somehow when the odo gets reflashed though....

Is there any companies in your area that do odo reflashing? I was thinking of paying you to get it reflashed by a company and do a trial run to see if the odo is functioning correct kilos/miles traveled.....

I can do it here through Speedo, but just in case there is any adjustments that need to be made to the cluster itself, it'd be easier and in your hands already to take a look at and do.... (just a thought)

[CTScott]

Originally Posted by Kioshi

Those extra bytes can be override somehow when the odo gets reflashed though....

Is there any companies in your area that do odo reflashing? I was thinking of paying you to get it reflashed by a company and do a trial run to see if the odo is functioning correct kilos/miles traveled.....

I can do it here through Speedo, but just in case there is any adjustments that need to be made to the cluster itself, it'd be easier and in your hands already to take a look at and do.... (just a thought)

The extra byte issue has to do with making it function correctly on a daily basis. The reflashing is completely different.

[Kioshi]

I see.

Toyota really has to make it complicated from jumping 1-2 years ahead in the car model...

[Kioshi]

Any update on the message ID deciphering? Also, a bit thinking ahead, but what happens if out of those 11 remaining messages there is no link to the odo? Could you make another unit that helps the odo to increment accordingly?

I mean, i could...drive it as is, but i would have to calculate how many miles i drove whenever got back home....

[CTScott]

Originally Posted by Kioshi

Any update on the message ID deciphering? Also, a bit thinking ahead, but what happens if out of those 11 remaining messages there is no link to the odo? Could you make another unit that helps the odo to increment accordingly?

I mean, i could...drive it as is, but i would have to calculate how many miles i drove whenever got back home....

It's been a busy weekend, but I did make some progress Friday night. I have deciphered how the cluster sends the mileage back to the ECM, but am still working on the other direction.

[Kioshi]

good to hear. It gets closer and closer in solving how the two clusters work on USDM cars.

I meant no rush by my previous comment. I just had a thought and usually I like to prepare myself for worse case scenario.

Enjoy your weekend Birthday guy.

[Kioshi]

Originally Posted by CTScott

I have the speedo working, but still can't get the odo correct. So far it either increments way too slow or way too fast.

From the OZ thread....

Around what estimate would it be that the odo is increasing too fast? If I have to change my oil sooner than 5000 miles...lets say at +/-1200 miles...i wouldn't mind. I just switched to Eneos 0w-20 oil for my car, it can go 10k before changing the oil...so just curious now~

[CTScott]

You wouldn't want it in the high speed mode. The two modes I've been able to achieve so far are ~ .1 km per hour and ~.1 km per second.

[Kioshi]

Originally Posted by CTScott

You wouldn't want it in the high speed mode. The two modes I've been able to achieve so far are ~ .1 km per hour and ~.1 km per second.

.1km per second is pretty fast, understood. What would be manageable then? In the hundredths or tenths digits ~.0025 km per second, if that's possible to get that low....

[CTScott]

I'm not sure yet. The two that I've run into so far were achieved by experimenting with values that I captured from my 09. I really need to figure out the algorithm that is used for the values. I am thinking that it is related to bus timing between message transmissions.

[Kioshi]

I just wanted to throw this on here.

On Friday night, computerlove87 was kind off to let us take out his 09 Yaris S cluster to try onto advocate's 06 Yaris non ABS. To our surprise, the cluster works. The speed was give or take +/- 1-2 mph difference when advocate and I did a 20 mph side by side comparison run....

ABS light stays on but the speedometer works fine and the odo works correctly according to advocate.

CTScott, I was windering does the odo increasement really matter...because, talking to some people and knowing that the RS cluster does not have a maint. light on it..it wouldn't matter for me to be to be keeping track of when to oil change...I dont know?

Or if you've made progress on the odometer at this moment...

[CTScott]

Originally Posted by Kioshi

I just wanted to throw this on here.

On Friday night, computerlove87 was kind off to let us take out his 09 Yaris S cluster to try onto advocate's 06 Yaris non ABS. To our surprise, the cluster works. The speed was give or take +/- 1-2 mph difference when advocate and I did a 20 mph side by side comparison run....

ABS light stays on but the speedometer works fine and the odo works correctly according to advocate.

CTScott, I was windering does the odo increasement really matter...because, talking to some people and knowing that the RS cluster does not have a maint. light on it..it wouldn't matter for me to be to be keeping track of when to oil change...I dont know?

Or if you've made progress on the odometer at this moment...

Very interesting. It sounds like on 09s they may have gone back to the speedometer being fed from the speed sensor, rather than from the ECM by way of the ABS speed sensors.

The issue with having the ODO not increment would be that you'd have no idea as to how many miles you've driven (for maintenance purposes) and of course you wouldn't be able to sell the car with the non-functioning ODO in it.

I'm still trying to figure this out, but I think what you found with the 09 cluster may mean that I am chasing my tail. I've been trying to emulate my 09 ECM talking to my 09 cluster. I think I need to sniff the CAN bus on an 08 with ABS to see if the message structure is different (which based on the above, I am 99% sure it will be). Enviri lives fairly close to me and he has an 08 with ABS, so his car would be perfect.

[kustom play]

Originally Posted by Kioshi

I just wanted to throw this on here.

On Friday night, computerlove87 was kind off to let us take out his 09 Yaris S cluster to try onto advocate's 06 Yaris non ABS. To our surprise, the cluster works. The speed was give or take +/- 1-2 mph difference when advocate and I did a 20 mph side by side comparison run....

ABS light stays on but the speedometer works fine and the odo works correctly according to advocate.

CTScott, I was windering does the odo increasement really matter...because, talking to some people and knowing that the RS cluster does not have a maint. light on it..it wouldn't matter for me to be to be keeping track of when to oil change...I dont know?

Or if you've made progress on the odometer at this moment...

we knew it work already, somebody on the board swapped there cluster out a while ago when they first offered the 09's with the tach

everything worked perfect except the millage. thats what got everybody started with swapping the clusters.

I dont know if he ever got toyota to fix the mileage issue though.

[Kioshi]

kustom - what model was it swapped from and to what model? The mileage works and increments accordingly from advocate and I's study on last friday night. His was an 06, i remember seeing an 07or 08 swap, but not early as an 06 model.....and from what CTScott could be getting on, the message from the CAN bus could be difference depending on the year of the car~~

CTScott - have you PM'ed enviri about having him be a test car for the CAN bus study...
So which option would you be taking now? Have you got better results w/ the odo w/ playing around with different calculations/algorithms?