Troubleshooting temperature sensor alarm fault on the Yanmar mini Excavator @MartyT

Marty T | Troubleshooting temperature sensor alarm fault on the Yanmar mini Excavator @MartyT | Uploaded January 2023 | Updated October 2024, 22 hours ago.
The coolant temp alarm came on while I was running my mini digger, the gauge was showing low temp so I knew there must be a fault somewhere, turned out to be a blown diode.

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