Thanks for the replies and suggestions. I'm going to drop by there tomorrow and have another look. Just wondering if it may be worthwhile to replace the factory contactors with a set of EV100 300amp direction contactors. From what I understand, new contact tips seem to work for a few months. A Toyota tech has told me that the 6 series electrics had a few problems and were dropped in favour of the 7 series pretty quickly.
I'll keep working on the problem...............
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