Alibro
Well-Known Member
I've been quiet here since Sunday because things went from bad to worse and I was getting worried. On Saturday the fault went from intermittent to permanent with a bang when I tried a test drive. All things were pointing towards either a bad connection or a blown inverter.
I spent a couple of days going through the connections testing the wiring and eventually found a short from one of the inverter/motor wires to ground. It was a connection I had made nearly two years ago so I was surprised it took so long to show the fault.
Thinking this was the issue I repaired the wire and tried again.
Before I had both motor temperature and motor rpm showing full scale as below.
After repairing the fault the Motor temperature fell back to the correct reading but the RPM was still full scale.
I spent another full day triple checking connections but couldn't get the RPM back to normal. I even started looking at Ebay for replacement inverters but decided to pull the top off the inverter to see if I could find anything and eventually found that one of the connections was not making it from the outside to the inside.
After jumping the broken connection I tried again and the RPM was now correct and the with the car out of gear the motor was spinning again. So I had not just one fault but two.
I think the second problem may have been caused by plugging the round grey connector in and out too often over the last couple of years so as I can no longer trust it I decided to remove it completely.
I had a couple of spare white connectors from other areas in the Nissan Leaf so cut the grey connector off and rewired the external loom to it directly. I then removed the internal green connector and wiring intact. This meant I still have the green socket intact in case I ever need it in the future or find a good grey connector and decide to put it back to standard.
Obviously I'll have to seal up the hole somehow but have plenty of sealant to do that. I'll double check my connections tomorrow and try testing again.
I spent a couple of days going through the connections testing the wiring and eventually found a short from one of the inverter/motor wires to ground. It was a connection I had made nearly two years ago so I was surprised it took so long to show the fault.
Thinking this was the issue I repaired the wire and tried again.
Before I had both motor temperature and motor rpm showing full scale as below.
After repairing the fault the Motor temperature fell back to the correct reading but the RPM was still full scale.
I spent another full day triple checking connections but couldn't get the RPM back to normal. I even started looking at Ebay for replacement inverters but decided to pull the top off the inverter to see if I could find anything and eventually found that one of the connections was not making it from the outside to the inside.
After jumping the broken connection I tried again and the RPM was now correct and the with the car out of gear the motor was spinning again.
So I had not just one fault but two. I think the second problem may have been caused by plugging the round grey connector in and out too often over the last couple of years so as I can no longer trust it I decided to remove it completely.
I had a couple of spare white connectors from other areas in the Nissan Leaf so cut the grey connector off and rewired the external loom to it directly. I then removed the internal green connector and wiring intact. This meant I still have the green socket intact in case I ever need it in the future or find a good grey connector and decide to put it back to standard.
Obviously I'll have to seal up the hole somehow but have plenty of sealant to do that. I'll double check my connections tomorrow and try testing again.
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I drove it into a field and planted it. The fronts were spinning but the rears just pushed me forward.
) yesterday so some lights that should have come on with the ignition didn't.
