Lic
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Location: Canada

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

Sat Oct 12, 2019 6:19 pm

Thanks kiev. I am doing repair so long time because I am working far away from home. So I decided to bring car closer to me to be able to finish repair. I bought hitch bar and I will remove front bumper to somehow connect hitch bar to car. I will tow car in ready and in neutral mode. I hope everything will be fine and I finally will get car working.

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

Sat Feb 15, 2020 8:13 am

ISA215N board by Nihon Pulse in Japan,

http://nihon-pulse.co.jp/products/amplifiers/03.html

Image

dimensions:
Image


circuit:
Image
kiev = kenny's innovative electric vehicle

FEV2017
Posts: 4
Joined: Sat Feb 15, 2020 7:37 am

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

Tue Feb 18, 2020 11:02 am

Hi,
I have the same code and have had a local Circuit Board repair guy check out the MCU board with the info above, he says that everything is fine on my board. I have also been through the full Mitsubishi Diagnostic process, I have had my pack out and measured resistances and insulation resistance on the contactors. My diagnostics reads pack voltage at 350v and if I clear the codes and try to start I can watch the capacitor/condenser voltage match battery voltage for 1 second then it drops away. I can see that (-) contactor actuating but not the (+).

Are there any other known causes for this fault code like the DC to DC problem or does that fire a different trouble code.

Or has my circuit board guy missed something?

The voltage on the condenser is 2v when it drains back off does this imply anything

kiev
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Contact: Website

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

Tue Feb 18, 2020 9:31 pm

Did you check all the components in the schematic on page 2?

The precharge resistor circuit will charge up the MCU capacitor voltage toward Pack Voltage in the first second, then the Positive contactor is supposed to come ON and hold that voltage as the precharge is turned OFF.

It sounds as if you are seeing the precharge effect, but the (+) contactor is not energized for some reason. There is a bleeder resistor in the MCU that drains the big capacitor if it is not being charged or held up. Also there is a fast bleed resistor thru a FET in the bottom plenum shown in the schematic on page 2. If the FET is stuck ON for some reason, then the fast bleed will prevent the Cap voltage from reaching the proper level and throw this code.

i think there is a data item in the MUT to read if the contactors are open or closed. How are you detecting that the (+) contactor is not coming ON?

Large capacitors will often appear to self-charge and hold a very low voltage after discharge, so 2V is nothing to worry about. It will charge up from the meter leads when you try to measure it.
kiev = kenny's innovative electric vehicle

FEV2017
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Joined: Sat Feb 15, 2020 7:37 am

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

Wed Feb 19, 2020 12:45 am

All my live measurements are taken through my scan obd software. It tells me if the contactors are open or closed in real time, so I can watch the voltage and contactors as I try to start the car.

The board guy checked everything on the board that can be check without power or de soldering.

All the resistors checked out fine, but I don't know if they are being charged or not.

kiev
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Joined: Sun May 03, 2015 7:15 am
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Contact: Website

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

Wed Feb 19, 2020 3:05 am

So if the main (+) is not commanded to come ON, then it may be an issue inside the EV-ECU under the rear seat that sends the coil drive signals to the Pack.

The (+) drive is on pin 107 of connector C-111. It should have 12V on that line with key at ON, and drop to 1V or less after the key goes to START. pin 106 is for the (-) contactor, and has the same key ON and START voltage response, so if it is coming ON, then monitor that and compare with the response of the (+).

Do you know if the car might have had a sudden shutdown event or power hiccup while driving? The main (+) contacts may be frosted over and not conducting if the coil drive was removed while current was flowing thru the contacts--this would cause a large DC arc inside the contactor and damage the precious metal surfaces of the contacts. Possible cause would be weak or failed 12V aux battery.
kiev = kenny's innovative electric vehicle

FEV2017
Posts: 4
Joined: Sat Feb 15, 2020 7:37 am

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

Sat Feb 22, 2020 6:02 am

Contactors are fine, perfect resistance so I am happy that they are ok.

I came across a 2nd hand controller for a good price. so I have just fitted it. HV fault gone but vin miss match still stopping it go into ready. My computer can't sort it so I need to see what my options are. I remember earlier in this thread someone else doing the same, so I'll have a read and a think.

kiev
Posts: 1147
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

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

Sat Feb 22, 2020 6:53 am

i wish we had a way to re-program the VIN, but there is an eeprom chip in the bottom plenum of the MCU that supposedly contains the VIN. It was swapped to get the MCU working.

i have used an arduino UNO board to make an eeprom reader/writer for the CMU boards, but haven't done it for this chip.
kiev = kenny's innovative electric vehicle

FEV2017
Posts: 4
Joined: Sat Feb 15, 2020 7:37 am

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

Sat Feb 22, 2020 7:21 am

Gonna try my local dealer 1st then go from there

Sidemips
Posts: 3
Joined: Fri Mar 20, 2020 10:15 am

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

Fri Mar 20, 2020 10:32 am

Based on the findings from this thread I did some further tests today on my MCU with the same symptoms (P1A15 when car is "hot"):
I mounted the MCU without the lower cover, I put the car in Ready and noted the Vbatt and Vcapacitor from Scantool (same as MUT-3 but for Peugeot)
Batt: 354.8V
Capacitor: 346V

I switched off and disconnected cn5, I was able to put ready:
Batt: 354.8V
Capacitor: 346V
So not leak on the fast bleeder resistor through the FET...

Then still in ready with CN5 disconnected, I applied hot air on the circuit board using a 1000/2000W fan heater.
I rapidly saw the Vcapacitor dropping from 346V to 340V by 2v increments... It took only 1 minute

More tests to come....

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