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In the car. It reads the part number from the ECU and then gets stuck.
Definitive answer on DYI software updates?
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Probably not all modules on CAN-bus went silent. This was also mentioned by one of the contributors.
Once I get my car fully fixed (OTE pipe does not hold boost, engine throws the "MAF flow is too high" error) and get a new inspection sticker, I'll try it in-car myself.
Once I get my car fully fixed (OTE pipe does not hold boost, engine throws the "MAF flow is too high" error) and get a new inspection sticker, I'll try it in-car myself.
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Looks like I finally got it to connect and run the program. Sat in the car for about 20 minutes letting it do it's thing until it got progressively slower until it looked like the program froze. Gonna give it another try again tomorrow.
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No, it froze on the second byte.
I ran it again this evening. Was only able to get it to run once but it looks like it failed to get the right pin. Shows verification failed. I was using putty to look at the program output.
I tried running it a few more times after and it kept getting stuck on entering settings mode.
![116043]()
I ran it again this evening. Was only able to get it to run once but it looks like it failed to get the right pin. Shows verification failed. I was using putty to look at the program output.
I tried running it a few more times after and it kept getting stuck on entering settings mode.
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Did some more poking around today. Realized that Arduino has a built in serial monitor. Horray, don't have to screw around with Putty.
Anyway, it seems like Teensy is accessing MCP2515 too fast because I keep getting a message enter setting mode fail. The only time it actually manages to initialize and proceed is if I drop the CPU speed right down to 24 MHZ. I am gonna reattempt to crack it again tomorrow.
Anyway, it seems like Teensy is accessing MCP2515 too fast because I keep getting a message enter setting mode fail. The only time it actually manages to initialize and proceed is if I drop the CPU speed right down to 24 MHZ. I am gonna reattempt to crack it again tomorrow.
Use +12v from OBD port and DC-DC converter to +5. MCP may consume enough power to overrun USB. Even if CAN-controller itself seems to work, its transceiver may have not enough power to drive CAN lines.
Also there are a lot of fake or broken MCP2515 chips on the market. I got 8 of them in last batch, 3 did not work out of the box in one way or another
The code also supports a built-in CAN-controller in Teensy, I used a SN65HVD230 transceiver, which also does not require level shifter.
Also there are a lot of fake or broken MCP2515 chips on the market. I got 8 of them in last batch, 3 did not work out of the box in one way or another
The code also supports a built-in CAN-controller in Teensy, I used a SN65HVD230 transceiver, which also does not require level shifter.
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I am using an old cell phone charger to power everything up.
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Yup.
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Got 2 new MCP2515 units. Same issue. Only talks at 24 MHZ. Tried running it at that speed. Same problem as before. PIN verification failed. I don't think it's actually talking to the CEM because the part number it pulls up initially is 86 followed by a bunch of zeros.
This may be a dumb question but do I need to have 2 MCP2515 units for in car cracking or just the optional unit shown in the diagram? Does it use both HS and LS lines or HS is only needed for cracking while on the bench?
This may be a dumb question but do I need to have 2 MCP2515 units for in car cracking or just the optional unit shown in the diagram? Does it use both HS and LS lines or HS is only needed for cracking while on the bench?
In theory you have to silent both CAN-buses. It may work with 1, I didn't try. Cracking can be done on any of two buses, HS is apparently faster.
What units did you get? I may get one and try myself. Wonder if it's SPI or slow level shifter issue and defining your own SPI transaction may solve that.
SN65HVD230 is also a possibility - it is 3.3v, works w/o level shifter.
Good thing is the cracker works for a dozen of folks, who dropped me a note. Repeating the device is still troublesome, maybe somebody will bake those PCBs and sell them on ebay.
What units did you get? I may get one and try myself. Wonder if it's SPI or slow level shifter issue and defining your own SPI transaction may solve that.
SN65HVD230 is also a possibility - it is 3.3v, works w/o level shifter.
Good thing is the cracker works for a dozen of folks, who dropped me a note. Repeating the device is still troublesome, maybe somebody will bake those PCBs and sell them on ebay.
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These are the ones I got.
www.universal-solder.ca
CAN Bus Micro Controller Interface with MCP2515 and TJA1050
CAN-Bus interface with MCP2515 CAN-Bus controller with SPI interface and TJA1050 High-Speed CAN-Bus Transceiver.
www.universal-solder.ca
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No jumper. Should there be one?
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Looks like 4 for 4 of these that I got are dead. Can you recommend a unit that works 100% of the time?
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