Turn the ignition key to the "ON" position (or bench-power the ECU using the +B and IG1 pins if working outside the car). Measure the voltage on the remaining pins relative to the ground pins. Look for the pin putting out a precise 4.95V to 5.05V. This is your sensor power line. Step 3: Map the Injector Loops
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To help give you the exact wiring diagram details you need, could you share the specific ? Additionally, Share public link Turn the ignition key to the "ON" position
Protects sensitive analog sensor wires from engine heat and moisture ingress. This is your sensor power line
Main battery feed, ignition switch signal, and multiple chassis/sensor grounds.