The 3SZ works perfectly fine, and I didn’t have any issues with the wiring harness I made, but I do have 3 warning lights: check engine light, ABS warning light, and brake warning light.
To start with the check engine light: I checked the engine, and it’s still there, so that can’t be it. The issue is that I can’t connect the OBDII scanner to the ECU, where I didn’t have any problems with the old engine. As far as I know, all the pins are in the right place on the DLC as on the ECU. I can’t connect to the ECU, so I can’t erase the codes and turn off the CEL. Very annoying. I don’t think the scanner is the problem, but I’m going to try it on a different car and see if that works. Any ideas?
Now, the ABS warning light is no big deal, because the rear sensors are not connected yet, so that’s probably why it’s on. The brake warning light is a bit weird though. The light is on, no matter what The brake fluid is okay, the handbrake too, and both circuits are closed in their ‘normal’ position (handbrake off, enough fluid). I was watching an MCM video the other day, and would you look at that:
They appear to have the same issue as well, so I don’t think I messed up on my homemade wiring harness.
I looked into the manual, and noticed that both circuits go through the ABS ECU. Could it be that the ABS ECU sends a signal to both lights, and not just the ABS light? I’m probably going to unplug the wire for the ABS light, and bypass the ABS ECU for the brake warning light, but I like to know why the light is on, before I mess anything up.