Go to advanced search

by kiev
Mon May 17, 2021 7:33 am
Forum: Other Electric Vehicles
Topic: Aptera is Back
Replies: 8
Views: 2244

Re: Aptera is Back

Looks like an immensely practical vehicle...

i don't see any manufacturer's license tags--maybe it was trailered down to the nature reserve and off loaded there for a concept car photo shoot at sunset?

where are the solar panels? Range and top speed?
by kiev
Wed May 12, 2021 1:49 pm
Forum: General Technical Discussions
Topic: Not able to drive. P1A15 error.
Replies: 63
Views: 11516

Re: Not able to drive. P1A15 error.

i have almost completed a trace of the ISA board. The final and biggest unknown is the part number/identity of the little 5-pin device on the top near the transformer and op amp. i'm guessing that it is some kind of dual voltage regulator in an SOT 23-5 package, but the part has been etched on my bo...
by kiev
Mon May 10, 2021 7:13 am
Forum: General Technical Discussions
Topic: Not able to drive. P1A15 error.
Replies: 63
Views: 11516

Re: Not able to drive. P1A15 error.

Here is the schematic with the board reference designators for the components in question: https://i.imgur.com/MX7IUyz.png The blue resistors and 3 ceramic capacitors (each should be about .39uF, not the 5pF default shown on schematic) are part of the voltage divider network on the input side to the...
by kiev
Sun May 09, 2021 5:25 am
Forum: General Technical Discussions
Topic: Not able to drive. P1A15 error.
Replies: 63
Views: 11516

Re: Not able to drive. P1A15 error.

Check the resistance of all the little blue resistors and the resistance from the input posts (VH and VL) to the via near pins 2 and 3 of the op amp on the ISA 215-hybrid board. VH to pin 2 ~100k and VL to pin 3 ~50k. Plus those 3 ceramic capacitors are suspect but would need to be removed from the ...
by kiev
Thu May 06, 2021 10:41 am
Forum: General Technical Discussions
Topic: Not able to drive. P1A15 error.
Replies: 63
Views: 11516

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: 67474

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: 1674

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: 63
Views: 11516

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: 1674

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: 1674

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?

Go to advanced search