Flash memory chip support #8
Replies: 11 comments 94 replies
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I just checked its datasheet and the commands are different. And there's no status register. M28F2xx family operates in another simpler way using a status register. |
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Makes sense, i hadn't tried writing. Thanks! |
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I don't know my PCM type. I try bootstrap SBEC(256K). I try bootstrap JTEC(256K) I teardown PCM. Flash number is TMS28F010A 2 chips. |
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I tried to check the circuit, I think the circuit is like this. |
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Okay, they seem to be wired in series, neat! |
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Thank you so much. |
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Update is out with improved flash ID function! It now returns 4 bytes in signature mode and GUI decides if it uses 2nd of 4th byte (word-organization) or 1st and 2nd byte (byte-org). Also increased internal delays a few milliseconds. JTEC usually needs longer timeouts to complete a request. |
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Mr.X, new updates (GUI and scanner firmware) are out with improved flash chip detector feature. Putting flash memory chips in tandem can have its own consequences that this scanner is not prepared for. Like the memory mapping setup of the bootloader. From TMS28F010A datasheet: |
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Thank you very much for update.
Sorry, I've been very busy at the end of the year.
I'll test it and let you know soon.
Thanks
Mr.X
ในวันที่ พ. 28 ธ.ค. 2022 เวลา 19:09 László Dániel ***@***.***>
เขียนว่า:
… Mr.X, new updates (GUI and scanner firmware) are out with improved flash
chip detector feature.
Select chip type manually if detector still doesn't work. GUI won't try to
detect it.
Putting flash memory chips in tandem can have its own consequences that
this scanner is not prepared for.
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Hi Daniel The Patient is Jeep Grand Cherokee ZJ 1997 Below you have dump of my trials. Cheers, Arek ========================================== Upload worker function: flash ID. Flash memory type could not be determined. =========================================== [RX->] Upload worker function result: [INFO] Worker function upload success. [RX->] Upload worker function result: [INFO] Worker function upload success. [<-TX] Start worker function: [RX->] Upload worker function result: [INFO] Worker function upload success. [RX->] ProgVolt settings changed: [INFO] VPP (20V) applied to SCI-RX pin. [RX->] ProgVolt settings changed: [INFO] VPP (20V) applied to SCI-RX pin. [RX->] ProgVolt settings changed: [INFO] VPP (20V) applied to SCI-RX pin. [RX->] SCI-bus (PCM) high-speed message: [RX->] SCI-bus (PCM) high-speed message: [RX->] SCI-bus (PCM) high-speed message: [RX->] ProgVolt settings changed: [INFO] VBB/VPP removed from SCI-RX pin. [RX->] ProgVolt settings changed: [INFO] VBB/VPP removed from SCI-RX pin. [RX->] ProgVolt settings changed: [INFO] VBB/VPP removed from SCI-RX pin. ============================================ |
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Hello Arek, we established early in this year that Flash ID won't work with TMS flash chips. Suggestion: when flash chip is selected by hand, the GUI won't try to identify it and the GUI moves to the next steps. Since total memory size is 256 kB and erase/program algorithm is same that of 128 kB variant (TMS28F010), you can go ahead and select "TMS28F210 (256 kB)" chip. Follow these exact steps:
I suspect there are multiple bootloaders for JTEC units, based on internal architecture, and this one in the GUI is not good enough. |
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I already tried to use tis memory, but will try again after “pumping up” a little bit discharged battery. I noticed read errors when charger is connected, probably caused by the noise from SMPS.
Thank You Daniel,
Arek
From: László Dániel ***@***.***>
Sent: Saturday, 4 March 2023 15:17
To: laszlodaniel/ChryslerScanner ***@***.***>
Cc: SP2JGY ***@***.***>; Comment ***@***.***>
Subject: Re: [laszlodaniel/ChryslerScanner] Flash memory chip support (Discussion #8)
Hello Arek, we established early in this year that Flash ID won't work with TMS flash chips.
Suggestion: when flash chip is selected by hand, the GUI won't try to identify it and the GUI moves to the next steps.
Since total memory size is 256 kB and erase/program algorithm is same that of 128 kB variant (TMS28F010), you can go ahead and select "TMS28F210 (256 kB)" chip.
Follow these exact steps:
1. Connect scanner to OBD2 port and make sure it's fresh out of reset state.
2. Start GUI fresh and connect to scanner.
3. Verify/Apply proper SCI-bus settings (OBD-config A or B).
4. Open "Tools / Bootstrap tools" menu.
5. Select "JTEC (256 kB)" bootloader.
6. Click on Bootstrap button and follow instructions.
7. Select "TMS28F210 (256 kB)" flash chip.
8. Keep "flash backup" checkbox on, if you don't have backup of the flash chip.
9. Click on flash Browse button and select new flash file.
10. Click on flash Write button.
11. "Are you sure you want to continue?" -> Yes.
12. "Do you want to use selected flash chip?" -> Yes.
13. Wait for tasks to finish.
I suspect there are multiple bootloaders for JTEC units, based on internal architecture, and this one in the GUI is not good enough.
Let me know if you still have issues, and I will try following up with another bootloader.
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Good morning, the EATX3 (128k) worked with partnumer read, flash-id read (but N28F010 instead of TMS) and reading the flash. The detected hardware-type at "engine tools" is I measured the VPP-pin of TMS28F010 during an erase-procedure, it had 12,2V. The wiring looks proper to me.
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Ralf, be sure that you have latest FW in scanner, I had same headake before. |
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thank you, but it is: |
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SP2JGY |
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JTEC bench pinout: C1 Black (power): C3 Gray (communication):
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Something couldbe wrong here:
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Simply, I will try independent supply ESP from USB only and interfacing. |
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Ground will be the common rail. |
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Thanks for your wisdom, Arek! |
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Daniel, consider single 5V supply, USB port has 500mA efficiency. |
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@SP2JGY It turned out that Ralf's scanner was defective! It slipped through my tests. He sent me his JTEC PCM, along with the faulty scanner. I was able to promptly erase and write the controller's flash memory, using another scanner, so troubleshooting was quickly done. |
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hi Laszlo I need your help,My dad has a PT Cruiser car, the computer broke more than a year ago, several technicians tried to fix it and nothing. I decided to take a look and when I saw the PCB board it turns out that they tried to do a reballing and I think some components were damaged. Do you know where I can get a schematic diagram of the pcb? I've been searching for a year and nothing, I hope you know something about it. thanks |
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Hello, I don't have schematics for either PCMs. |
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I believe there are no schematics available anywhere from the PCBs of any generation ECU. I believe your best chance is to buy the exact same ECU via the Partnumber on the ECU itself. Maybe some official reconfiguring needs to be done for e.g. immobilizer. Best bet is to go to Chrysler for that probably. |
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Hello . Some body can help me.. |
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Hi, Daniel!
Hope you're well.
Could you please explain if I can do a camshaft position sensor
synchronisation by your Chrysler scanner?
Albert
пт, 31 мая 2024 г., 16:52 László Dániel ***@***.***>:
… JTEC bench pinout:
C1 Black (power):
2: Ignition switch to battery
31, 32: Ground (one pin enough), to OBD2-4
22: Battery, to OBD2-16
C3 Gray (communication):
27: SCI Transmit, to OBD2-7
29: SCI Receive, to OBD2-6
JTEC_pinout.jpg (view on web)
<https://github.com/laszlodaniel/ChryslerScanner/assets/20598072/9b048127-f1e5-41e7-a3e3-bf1e3af0b2d5>
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Hi Albert, yes, normally this is done by SCI 23 06 with an F0 response, but I noticed that JTEC/JTEC+ skips this parameter. There is another one, SCI 23 0B, that involves cam and crank sensor reference:
This writes 00 to SCI 28 00 0F EEPROM offset. I'm not sure if the effect is the same, so backup this value just in case. |
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Hi Daniel!
Thanks for the quick response.
What does this field stand for?
In the end of this video it is demonstrated how to set Camshaft
Synchronizer on a Jeep 4.0L using a Scan Tool (from 17th minute):
https://youtu.be/igsJU7SnAxU?si=FZmRZHeY28wmpjHF
He checks for degree that Camshaft Synchronizer doesn't match the
Crankshaft and then rotates the Synchronizer to reach near Zero position:
As you can see the Camshaft signal might be not aligned with the Crank:
So it would be great if we could do this using your Chrysler Scanner.
чт, 7 нояб. 2024 г. в 09:41, László Dániel ***@***.***>:
… Hi Albert, yes, normally this is done by SCI 23 06 with an F0 response,
but I noticed that JTEC/JTEC+ skips this parameter.
There is another one, SCI 23 0B, that involves cam and crank sensor
reference:
reset_cam_crank_sync_reference_01.png (view on web)
<https://github.com/user-attachments/assets/ff030faf-cc35-4173-a08d-31d4ea1cc003>
This writes 00 to SCI 28 00 0F EEPROM offset. I'm not sure if the effect
is the same, so backup this value just in case.
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Oh, I see, I think this is the Set Sync feature. Latest GUI version supports it. Here are my notes on setting a non-zero sync value:
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What a wanderful notes! Thanks. I guess I have the latest version. |
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You are welcome! Start the engine and wait for it to reach operating temperature. The GUI checks a number of things before going further, like engine is idling, throttle is closed, or timing could be changed. Then idle-speed is automatically increased and ignition timing is reduced to basic (spark scattering is disabled). Make the desired adjustment and finally click the Stop button. |
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The V2 scanner supports only a handful of commonly used flash memory chips. Copy/paste the manufacturer and chip ID bytes from the log window/file to this thread if you encounter an unknown chip.
Examples:
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