Toyota Harrier ASU60/ASU65 Port Fuel Injector Wiring Diagram

[Roland.O]

This diagram is essential for circuit tracing, power supply verification and injector ground pulse analysis across the port injection network(connectors u1 to u4). It provides terminal pinouts and wiring layout needed to measure standard 12V operating feeds, check driver signal integrity and perform cylinder specific diagnostics for the ECM. Without the factory diagram, you can easily mistake a simple wiring open or high resistance as a component failure. This can cause pinning damage to the delicate ECM circuits.

Common questions that this diagram answers​

1. What is the pinout chart for the port fuel injector u1 connector on a Toyota Harrier ASU60/ASU65?
2. How do I test the 12V power supply and ECM ground pulse at the cylinder 4 port injector u4 on an ASU60/ASU65?
3. What are the factory wire colours for the port fuel injector harness on a Toyota Harrier 8AR-FTS engine?
4. How do you isolate a wiring fault from a faulty injector solenoid when diagnosing a port injection system error for 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 Port Fuel Injector 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.