braebyrn
Forum Supporter
Posts: 84
Joined: Thu Nov 14, 2013 5:20 pm
Delivery Date: 08 Nov 2013
Leaf Number: 024521
Location: Seattle, WA

Re: Leaf 2012 won't start or charge [SOLVED]

Fri Jun 08, 2018 6:43 am

Any idea if the VCM are vin tied to the Leaf? I could swap the one in my 2012 to see if it is the VCM.

mux
Posts: 159
Joined: Sat Jan 13, 2018 3:52 am
Delivery Date: 13 Oct 2011
Leaf Number: 6177

Re: Leaf 2012 won't start or charge [SOLVED]

Sat Jun 09, 2018 2:05 am

I don't have any experience with that, but I'd imagine it is. If you can try to swap it for little cost, you can certainly try.

braebyrn
Forum Supporter
Posts: 84
Joined: Thu Nov 14, 2013 5:20 pm
Delivery Date: 08 Nov 2013
Leaf Number: 024521
Location: Seattle, WA

Re: Leaf 2012 won't start or charge [SOLVED]

Sun Jun 17, 2018 8:46 pm

The large antifreeze reservoir at the drivers side front was almost empty. The other smaller reservoir containers were not empty. After I filled it with the correct blue antifreeze and reset the codes, I only have the following codes now.

C118C 0109 ABS EV/HEV System BRC-126
C1A6E 0109 Brake EV/HEV System BR-146
C1A70 0109 Brake Brake Control System BR-160

Which one do I tackle first?

mux
Posts: 159
Joined: Sat Jan 13, 2018 3:52 am
Delivery Date: 13 Oct 2011
Leaf Number: 6177

Re: Leaf 2012 won't start or charge [SOLVED]

Sun Jun 17, 2018 11:01 pm

Those trigger everytime you remove 12V power or if other critical codes occur. You can just clear them all in random order.

mauiEVenthusiast
Posts: 9
Joined: Thu Aug 16, 2018 6:06 pm
Delivery Date: 17 Aug 2018

Re: Leaf 2012 won't start or charge [SOLVED]

Fri Aug 17, 2018 7:25 pm

I have been posting in another thread that I found about the car we got ( https://www.mynissanleaf.com/viewtopic.php?f=30&t=26343 ), but it seems like this thread may be more on point.

My friend who has several 2013+ Leafs bought this Leaf here on Maui.
The battery was replaced by Nissan in 2016. It shows a SOC of 67% and a SOH of 92.18%.
I got those numbers with Leaf Spy Pro. There is no battery charge level or range displayed on the GOM...
Car will not charge, or go to "ready" mode, and go into Drive or Reverse.

There are a lot of trouble codes. I think these are the most important ones here.

P0AA0 00C4 EV/HEV QNRH Hybrid Batt. Positive Contactor EVC-141
P317A 00C0 EV/HEV Motor System EVC-247.
P0A1B 000A MOTOR CONTROL Drive Motor A Cntrl Mod TMS-46
P0C79 000A MOTOR CONTROL Drive Motor A Inverter Voltage TMS-70
P324F 000A MOTOR CONTROL Drive Motor A IGBT TMS-99

The rest of the codes are ABS, HVAC, or Multi AV codes which I think are a result of no HV to the HV Junction Block.
Now this is my first time I have worked on a Leaf, however I have been servicing the family Prius for 13 years. I have fixed a lot of other Prius, and changed everything at least once. Inverters, traction batteries, HV Contactors, Drivetrains, ABS modules, etc. I have an associates degree in electronics, so at least I know enough to not complete a High Voltage circuit with myself...

The original owner was driving normally one day, and suddenly a bunch of warning lights lit up, and the car lost all power. The owner had the car towed to the dealership. They pulled all the same codes I got on the invoice. The dealer paperwork says the inverted is at fault, & the motor has a slight fluid leak so they want to replace it too. The repair quote was over $12k in parts, & over $2k in labor. Also the dealer replaced the 12V battery as part of the diagnostics protocol.

I have the factory service manual now too. According to the manual so far I have found the inverter problem code and the HV contactor code receive the same Priority level in the troubleshooting flow, but the code P0AA0 HV contactor diagnosis page says if there are other DTC's present, deal with them first, as the P0AA0 may be caused by the other problems... That is good I suppose since it appears the HV contactors are inside the battery case, & I do not want to drop the battery and split the case if that is not needed... Still it seems to me that none of the HV componenets will work if the +HV contactor has failed, and the contactor/precharge assembly is the least expensive component of the suspected failure points...

Any pointers will be greatly appreciated.

Mahalo

Return to “Problems / Troubleshooting”