BYD Sealion 06 EV: Washer System Not Working Diagnosis

Fixing the washer system fault can be very challenging without the proper factory procedures. However, if you refer to the BYD Sealion 06 EV Wiring diagram, you will find the wiper wash system circuit diagram, which will help you trace the washer pump, switch, power supply, and control circuits involved in diagnosing an inoperative washer system.

This diagram helps answer these questions​

1. Why is the BYD Sealion 06 EV washer system not working?
2. How do you diagnose a BYD Sealion 06 EV washer-system fault?
3. How do you test the BYD Sealion 06 EV washer pump circuit?
4. How do you test the washer switch circuit?
5. How do you check the power supply to the BYD Sealion 06 EV washer system?
6. How do you diagnose a washer control-circuit fault?
7. What circuit diagram is needed to diagnose a BYD Sealion 06 EV washer system that is not working?

How to Access the Diagram​

To access the wiring diagram, simply click on the link below. Within the diagram, you will find the wiper wash system circuit diagram. I have attached a screenshot below to help you quickly navigate to the section where the diagram is located. Once you find it, you can then print or save it.

Please note that the year in the document is not the YOM but the document release date, so it covers the entire model range. Also note that the document applies to all countries where the model is sold, including China, South Africa, Singapore, the UK, Australia, New Zealand, Thailand, Brazil, Canada, etc.