I programmed SoC, BTM, MxC, MxD, and MDV from post #7, all have TXD beginning with 074522****. All of these have a blank data display. Other displays such as TBV work as expected.

Post #61 has four additional battery xgauges that I will also try, but I would expect the same results.

 

Try changing the SoC TXD first four characters to 0740, 0741, 0742, 0743, 0744, 0746, 0747. Probably won't work, but at least it will eliminate 7 possible addresses. There are 128 possibilities, 07E0 is the PCM, 07E1 is the TCM, 0745 seems to work for all FWD for the TBCM. If none of the 074x work, you could then try 07E2, 07E3, 07E4, 07E5, 07E6, 07E7.

If there is anyone in the Phoenix area with a non-displaying SoC, bringing it by Linear Logic with your FEH might be a big help.

 

I edited SoC TXD to try the suggested data. Tried 0740, 0741, 0742, 0743, 0744, 0746, 0747, 07E2, 07E3, 07E4, 07E5, 07E6, 07E7. SoC displayed blank data for all attempts.

Is there another condition that needs to be met to get a SoC display, i.e. ICE running, vehicle moving, etc? I'm doing this testing with the key in run position but ICE off, vehicle stationary, and I can see TBV under that condition.

I'd be happy to try other data if you can define exactly what you want me to do. Thanks.

 

Well, you could try the remaining addresses and hope for the best...
They would be 0700 through 07F7. The last nibble only goes from 0 to 7.
For example, you could change the TXD for SoC to 0735224923 and see if you get anything. Methodically, you could try 0700,0701,....0707 and then progress to 0710,0711,....0717, 0720,0721, etc. Keeping the last 6 characters 224923 for all of them, of course. You would progress through 07A0, etc. You have already eliminated the 07E and 074 addys. You tried 07E0 and 07E1, right?

The key just needs to be in the run position. The ICE does not have to be running to get TBCM data. If you get the PCM and TCM xgauges to respond (07E022**** and 07E122****), you should be getting the TBCM data also.

This will take some time and may yield nothing, be forewarned. If we eliminate all of those addresses, though, then maybe Ron could advise another road to go down.

 

Desert Dog, again, thanks for all of your effort. Just as a curiosity, I was watching the Generator Speed (GNS) XGauge lately. I noticed that it was giving realistic absolute values but there would be a negative indication sometimes. I could correlate this to the operation of the FEH system as follows: 1. When the ICE is off, the GNS is always negative. 2. With the ICE on and when charging the traction battery through deceleration, the indications is negative. 3. With the ICE on and the electrical system assisting, the indication is positive. Surely this positive/negative indication is not indicative of the generator reversing directions with this frequency? Any ideas. Thanks.

 

I did not originally try 07E0 and 07E1 but I have eliminated them just now.

I will try 0700 thru 07F7 with lower nibble ranging 0-7. I think there are 104 numbers to try, so if anyone (with the same SoC problem) wants to work with me we could split-up the job. Let me know. Thanks Carl

 

What you're seeing is perfectly normal. The Generator is connected to the sun gear, the Traction Motor is connected to the ring gear, and the ICE is connected to the planetary carrier of the eCVT planetary gearset. Try backing up with ICE off. Traction and Generator should be negative. Rapidly reversing rotation of the generator is probably hard on the bearings, but I'm sure the tranny is engineered to take it.

 

There is a mechanical brake on the generator1, I thought it was for engine start when moving but maybe ------?

 

Brady and I split-up the task and tried the full range of 0700 thru 07F7 for SoC programming of TXD. The SoC display remained blank for every value.

Let us know if there is anything else we can do. Thanks.

 

For more detailed info, look here:
https://www.greenhybrid.com/discuss/...-vs-rpm-15518/

Post #9 has a graph that should help you visualize.
Yes, the direction of the generator spin changes frequently.

I would just like to point out that in EV the generator and traction motor spin in reverse directions. So moving in reverse, the TM will be negative, and the GM will be positive. -John