For check engine lights and speed signals.
Regardless of the year, the 2UZ-FE ECU relies on several "critical" circuits to run. If you are doing a standalone swap or a harness merge, focus on these primary pin groups: 1. Power and Ground (The "Must-Haves") Constant 12V power from the EFI relay. 2uzfe ecu pinout
You can find high-resolution diagrams and detailed terminal voltage specifications at the following locations: 100 Series Land Cruiser : Specialist shops like ChipTorque For check engine lights and speed signals
Late-night forum posts whispered in the back of his mind. Check the E2 ground. Watch for the immobilizer pins. He felt like a safe-cracker listening for the click of a tumbler. One wrong bridge on the E6 connector and he’d smell the expensive, ozone scent of a fried ECU. Power and Ground (The "Must-Haves") Constant 12V power