Originally Posted by dannoxyz

Here's wiring diagram, showing NO connection of PINK to any other wire.



Given how many non-standard things you've found with this harness. I recommend removing whole thing from bike:

1. spread it out on large 4x8 sheet of plywood

2. unravel all wraps and tape

3. verify every single wire has end-points that connect to destinations shown by manual. And ONLY those end-points, nothing else anywhere!

4. verify again every single wire is run according to manual.

5. triple check again, that every single wire matches what you see in manual. Nothing missing, nothing extra.

6. then put it back on bike, but before connecting ANYTHING, just battery & ground.

verify above tests with ignition-switch only, ignition-switch connected to harness, that you've got exactly 9.0v at pink-wire at ECU connector. DO NOT bring that ECU back out of bank box until you've confirmed these measurements!!!

Originally Posted by GB03

Kept thinking I might be missing part of the wiring harness that might be causing the issue but according to wiring diagram I have everything except the O2 sensor wiring and PC solenoid which is irrelevant for mine being non Cal

Originally Posted by dannoxyz

You’re doing great job, you’re almost there!



Yeah, no O2 sensor or PC solenoid for you. Ignore stuff that’s inside dashed lines. It’s not required unless you have CA ECU with extra lines for those components. And they only come into play with warmed-up engine. Definitely nothing to do with ECU priming pump and starting bike.

Originally Posted by GB03

So, even with the ignition unhooked from harness and hooked directly to battery.
Battery voltage 13.0v. pink wire with ignition on 11.75v. I thought the zener diode was supposed to convert voltage to 9v. Could I have gotten a bad ignition from Honda?

Originally Posted by GB03

Originally Posted by dannoxyz

That’s correct test by itself. Send power in on red wire. Then measure outout on red/b wire and pink.

Nah, diode’s fried by being connected to red/b and blk/wht power wires on outlut side. Diode is not regulator, it does fixed -3.9v drop from input. So 13v -3.9=9.1v output. But as they get fried, voltage drop gets smaller and smaller.

As test, measure voltage on solder blobs holding diode on.

Originally Posted by GB03

I'm not going to fool with taking new ignition apart. I'm sending it back. Just ordered another one. In the mean time tomorrow I'll start taking harness apart awaiting new ignition.
Thanks

Originally Posted by GB03

So I finally went through the wiring harness. Checked every wire and connection. All were good in place and good continuity with no corrosion. New ignition switch tested 9.7 volts on pink wire with kill switch on and off. Still no fuel pump prime. I installed jumper wire on fuel relay brown and bl/w wire and pump will prime with kill switch on. One confusion thing I found on the black ECU plug though. At number 16 slot which on wiring diagram shows no wire connected. On mine is has a green ground wire there. I checked it and it has good continuity just wondering why it doesn't show being there on the diagram? I guess this has nothing to do with anything but was wondering?
So what do you think we try next?

Originally Posted by GB03

So I finally went through the wiring harness. Checked every wire and connection. All were good in place and good continuity with no corrosion. New ignition switch tested 9.7 volts on pink wire with kill switch on and off. Still no fuel pump prime. I installed jumper wire on fuel relay brown and bl/w wire and pump will prime with kill switch on. One confusion thing I found on the black ECU plug though. At number 16 slot which on wiring diagram shows no wire connected. On mine is has a green ground wire there. I checked it and it has good continuity just wondering why it doesn't show being there on the diagram? I guess this has nothing to do with anything but was wondering?
So what do you think we try next?

Originally Posted by GB03

Also forgot to add. Getting 12.7 at coil and injector plugs. New spark plugs as well.