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dalathegreat / Nissan-LEAF-Battery-Upgrade

Software and guides for upgrading LEAFs to bigger and newer batteries
GNU General Public License v3.0
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Battery paired but lots of errors #4

Closed gio-giorgio closed 9 months ago

gio-giorgio commented 11 months ago

Hello,

Just installed the 2x gateway where a broken aftermarket solution was installed, and now I can read the range (281km) on the dashboard of the Leaf. But when using LeafSpy Pro I can see I still have some CAN bus errors, on the Brake and the HV Battery.

Is it the ECU asking for a full reset to clear all the DTC faults, or is it guaranteed that some connection is not ok?

SOC does not show up at all on the dash, but on leafspy I can see 98.5%.

Thank you.

nzautomate commented 11 months ago

What model of leaf is it installed in?

gio-giorgio commented 11 months ago

It's a 2013 Nissan Leaf ZE0

gio-giorgio commented 11 months ago

Ser No. 125L 001761, originally with a 24kwh and now has a 40kwh

gio-giorgio commented 11 months ago

image

Here is a DTC readout with leafspy pro

nzautomate commented 11 months ago

All looks quite strange. I assume these faults can't be cleared? The cell over voltage ones, what does leaf spy show for cell and pack voltages?

gio-giorgio commented 11 months ago

I can clear some faults but they come back after a while. Right now the main issues are the HV Can error, which could be related to the gateway.

IMG-20230803-WA0003 IMG-20230803-WA0004 IMG-20230803-WA0005 IMG-20230803-WA0006

nzautomate commented 11 months ago

If this is a ZE0, several of those can fault codes are likely to show, and won't clear, but don't seem to have an effect on driving the car. P3196 is common on battery swaps, so is P30E0.

If yours is an AZE0, I understood that Dala had all the fault codes cleaned up as your swap is the same as he ran on his own car.

I'd be looking to reflash and make sure you used the right file for your can bridge, and failing that, maybe your can bridge is faulty, especially if you have one of the AliExpress ones

gio-giorgio commented 11 months ago

I reflashed it just now, afterwards I may try the other aliexpress gateway.

Anyway, the range shows up now but there is an I-Key fault there.

About the over voltage, I might discharge them a bit manually to see if that fixes it.

gio-giorgio commented 11 months ago

An update:

We found that the 3rd party gateway I was using before had ignition also wired to the unit instead of being connected directly between the car and the battery.

So the issues I have been having could be explained by that. I would like to try to buy a harness that directly connects them and just modify it for the 2x CAN gateway, that could fix things.

Am I correct in assuming the connector of the 24kwh differs from the 40khw?

dalathegreat commented 10 months ago

@gio-giorgio The connector on the battery is 22pin on ZE0, and 36pin on AZE0 and ZE1. Read the wiki: https://github.com/dalathegreat/Nissan-LEAF-Battery-Upgrade/wiki,

dalathegreat commented 9 months ago

Closing this since it wasn't related to this CAN bridge originally