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by kiev
Thu May 06, 2021 10:41 am
Forum: General Technical Discussions
Topic: Not able to drive. P1A15 error.
Replies: 54
Views: 8696

Re: Not able to drive. P1A15 error.

The control board for the MCU is in the bottom plenum, but i don't know if it is easily accessible from below while installed in the car; it may be easy but i have only worked on these on a workbench after the MCU was removed from the car. But removal has it's own set of issues regarding bleeding ai...
by kiev
Thu May 06, 2021 10:25 am
Forum: Batteries and Battery Management
Topic: No READY. P1A15 error. Condenser charge timeout.
Replies: 142
Views: 65133

Re: No READY. P1A15 error. Condenser charge timeout.

i have had problems with intermittent ceramic capacitors due to temperature changes. Hard to troubleshoot too.
by kiev
Thu May 06, 2021 10:21 am
Forum: General Technical Discussions
Topic: Problemwith MCU P062F
Replies: 17
Views: 984

Re: RL78 CRC

That's good to hear. i couldn't find anything about a CRC for the SH-2 32-bit RISC microcontroller used in the MCU in either the hardware or software manuals, which seems very strange. i did find this discussed in connection with the RL78 16-bit series devices and it includes using forward and rever...
by kiev
Thu May 06, 2021 10:06 am
Forum: General Technical Discussions
Topic: Not able to drive. P1A15 error.
Replies: 54
Views: 8696

Re: Not able to drive. P1A15 error.

It is on the right hand side.

You can verify this by lifting the carpet and lid of the rear compartment and reading the labels on the boxes. The left hand box is the OBC/DCDC made by Nichicon. And the right hand box is the MCU made by Meiden.
by kiev
Thu May 06, 2021 6:46 am
Forum: General Technical Discussions
Topic: Problemwith MCU P062F
Replies: 17
Views: 984

Re: Problem with MCU P062F

There are members who have discussed programming the VIN in the P1A15 threads started by Lic and Gencis who may be able to give you some advice. Did you remove the eeprom when reading and programming, or try to do it while still on the board? What voltage did you use for Vcc and for the serial lines...
by kiev
Wed May 05, 2021 10:54 pm
Forum: General Technical Discussions
Topic: Problemwith MCU P062F
Replies: 17
Views: 984

Re: Problemwith MCU P062F

So comparing the eeprom data between the two MCU--in all the other addresses with the random/unknown values other than the VIN and SERIAL Number, Are they identical?
by kiev
Tue May 04, 2021 10:45 pm
Forum: General Technical Discussions
Topic: Problemwith MCU P062F
Replies: 17
Views: 984

Re: Problemwith MCU P062F

Thank you for the answers and for posting the full eeprom contents.

It appears to be other data stored which we do not know the purpose, or if it is corrupted or correct.

But we need to figure out how to calculate the correct check sum for your VIN.
by kiev
Tue May 04, 2021 12:07 pm
Forum: General Technical Discussions
Topic: Problemwith MCU P062F
Replies: 17
Views: 984

Re: Problem with MCU P062F

To help understanding, please confirm or correct the following: 1. Your car is a 2012 Mitsubishi iMiev with VIN# JMBLDHA3WCU00610 ? 2. When you got the car it came with an MCU from a 2011 Peugeot iOn (VIN ..801988) with MCU serial# CF1101004920 ? 3. In the 24C64 eeprom, the VIN and Serial Number are...
by kiev
Sun May 02, 2021 4:46 am
Forum: General Technical Discussions
Topic: Not able to drive. P1A15 error.
Replies: 54
Views: 8696

Re: Not able to drive. P1A15 error.

Sounds like a good approach to me, especially considering all the labor/shop time expense to inspect, clean and verify electrical connections and wiring.
by kiev
Sun May 02, 2021 4:30 am
Forum: General Technical Discussions
Topic: Problemwith MCU P062F
Replies: 17
Views: 984

Re: Problem with MCU P062F eprom error

What was the Old VIN and the new VIN? What was the Old and New Part Numbers and Serial Numbers? Did you happen to capture the hex/ascii screens, or the hex files for both versions of eeprom (before and after making changes)? Coulomb may be able to help decode if this is some sort of checksum, CRC fi...

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