Toyota Harrier ASU60/ASU65 Horn Wiring Diagram

[Roland.O]

This diagram is required for circuit tracing, power and ground verification and connector identification for the horn loop. It gives the direct electrical paths between the steering wheel horn switch, the spiral(clockspring), the horn relay and the dual horn assemblies. Without this factory diagram you risk incorrect wiring identification which can lead to shorts or mistaken probing of the adjacent airbag circuits in the steering column. This can spring up new circuit faults and lead to unnecessary replacement of components.

Common questions that this diagram answers​

1. Where is the horn relay located on a Toyota Harrier ASU60/ASU65?
2. How do I test the horn switch circuit at the steering wheel on a Toyota Harrier ASU60/ASU65?
3. What is the pinout configuration for the dual horn connector on a Toyota Harrier ASU60/ASU65?
4. Which fuse protects the horn circuit on a Toyota Harrier ASU60/ASU65?

How to access the diagram​

Click on the link below to access the complete OEM Manual, within it you will find the Horn Wiring Diagram. I have given the 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. Let me know if you face any challenges or have any questions and I will be happy to answer in the thread below. 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 the document applies to all countries where the model is sold Including Singapore, Australia, Malaysia, Kenya, UK, New Zealand, etc.