P0A0D to no end…

Hello to all. I had a hybrid battery that I had to replace a few modules in, so I took it out of the vehicle and did several different load tests on each individual module in different conditions and the failed modules have now been replaced and grid charged to 137v total pack voltage, then discharged, then charged back up, left for 24 hours, checked voltages, then load tested, etc. Everything was fine so I topped off the charge and put the battery pack back in. With the downtime on waiting for charging and discharging, I also cleaned the whole EGR system, which doesn’t amount to much on my concern I don’t think.

I put the battery is back in and all plugs are plugged in, including the interlocking switch (yes it’s in correctly, 100%). I have tested this circuit and it’s good but the battery voltage sensor ecu is saying otherwise.

This has been a nightmare and I’m reaching out in hopes of someone out there who has experienced this because I’m out of what the heck to do next.

Will not go into “READY” mode. Hybrid battery COOLING FAN is on as soon as the ignition is “on” and remains on until I power off the ignition.

I have replaced all the bus bars and nuts. I have replaced the bus bar wiring harness to the battery ecu and I have also replaced the whole junction relay box with new relays.

Techstream says as follows:

P0A0D
P0AE7
U029A
P0453

Also,
Anyone know what “connector cover assembly” is in the “ILK” circuit right before it gets to the “air conditioning harness”?

Thanks in advance. I’ve learned so much from this forum!

 

Not positive, but in the diagram you are referring to, all three of ("inverter terminal cover", "no. 4 floor wire", and "connector cover assembly") are shown as being within the inverter with converter assembly. My first guess would be that you find more than one independently openable terminal cover on the inverter, and a pair of interlock contacts beneath each one.

None of those would normally be the cause of a P0A0D unless you had removed any of those covers on the inverter.

Only the P0A0D code is about the interlock circuit. The other codes you have indicate other issues and should be looked up on their own.[/QUOTE]

ahhh.. Yes. The inverter cover I’m not sure why I didn’t realize that yesterday. That should be fine under the cover. This P0A0D that has been brought upon me is beyond me and I’m not understanding what could possibly be the problem but when I can accomplish that, I can at least get into ready mode and other codes my disappear along with it would be nice.

My fan kicks on and it remains on which could indicate a stuck relay by chance and will check it as soon as I get a moment..?..
As for this interlocking switch trouble code, I think I might just trace the 2 wires back and see where they go exactly. I jumpered them together at the interlocking switch at the connector, so that’s isolated from being the problem. The leads coming off the battery have the packs volts being delivered to the junction box with the switch engaged as well.

 

I’m not sure that I replied correctly, format wise...