Vida CEM swapping

MaxDenisov · Post by **MaxDenisov** » 09 Mar 2021, 13:34

Done using OBDII!
@Vitaliy Thank you very much!
Key position -0

Same wiring as used before. Just used charger for laptop during pin finding.

Code: Select all

CPU Maximum Frequency:   600000000
CPU Frequency:           180000000
Execution Rate:          180 cycles/us
Minimum CEM Reply Time:  30us
Platform:                P2
PIN bytes to measure:    3
Number of samples:       60
Number of loops:         1000

CAN high-speed init done.
CAN low-speed init done.
Initialization done.

jcdillin · Post by **jcdillin** » 09 Mar 2021, 13:51

Awesome!

Post by **vtl** » 09 Mar 2021, 13:55

Congrats! So it again comes to a wire gauge question (use thick wires) and whether a good source of power is needed (it is needed).

Also I see SAMPLES are set to 60, which also helps to distill the signal in all that noise.

jcdillin · Post by **jcdillin** » 09 Mar 2021, 13:58

Yeah, I think it's mostly a noise issue in the car.

I emailed D5T5 and they will accept the pin to update to your account for configuration changes. I'm just waiting for them to update mine to see if I can do the manual configuration change in the CEM.

Post by **vtl** » 09 Mar 2021, 14:01

They probably have your pin already from here

Wondering how many people are following this thread... I talked to like 30+ folks over email in these few months since the first pin got cracked.

MaxDenisov · Post by **MaxDenisov** » 09 Mar 2021, 14:40

jcdillin wrote: 09 Mar 2021, 13:58 Yeah, I think it's mostly a noise issue in the car.

I emailed D5T5 and they will accept the pin to update to your account for configuration changes. I'm just waiting for them to update mine to see if I can do the manual configuration change in the CEM.

I also just sent my pin to D5T5 and will share some news after.
I want to add extra key and remote instead of lost one.

Post by **RickHaleParker** » 09 Mar 2021, 14:48

MaxDenisov wrote: 09 Mar 2021, 12:03
vtl wrote: 09 Mar 2021, 11:52 What kind of CEM is it? Is it based on Renesas?
How to check it without disassembling?

99.9 % sure this is all correct.

P1 - Motorola S12 chips.
2007–2013 C30.
2013–2019 S40II
2004–2012 V50.
2006–2013 C70II

P2 CEM-H Motorola MC68386.
1999 - 2004 S60, S80, V70II, XC70, XC90

P2 CEM-L Renesas M32C.
2005– 2009 S60.
2005 - 2006 S80.
2005 - 2007 V70II.
2005 - 2007 XC70.
2005– 2016 XC90

Post by **vtl** » 09 Mar 2021, 14:59

-MY2014 XC90. MY2015 was SPA.

Post by **RickHaleParker** » 09 Mar 2021, 15:01

MaxDenisov wrote: 09 Mar 2021, 13:34 Same wiring as used before. Just used charger for laptop during pin finding.

Power supply board not enough current capacity?

MaxDenisov · Post by **MaxDenisov** » 09 Mar 2021, 15:07

RickHaleParker wrote: 09 Mar 2021, 15:01
MaxDenisov wrote: 09 Mar 2021, 13:34 Same wiring as used before. Just used charger for laptop during pin finding.
Power supply board not enough current capacity?

I just thinking that Vitaliy is right, better to have dc/dc converter 12v-5v.
I had some difference/issues because of power supply and long wires