
Black-Orange is injector power, as you already found out. The wiring harness connecting these two is. The ECU sends a pulsing ground to the injector, which closes the circuit, providing the injector's solenoid with current. One pin is connected to the battery through the ignition relay and the other pin goes to the ECU. The codes are p0304 and p0204 I have changed both the coil and injector and suspect the Harness to be the culprit.Cadaholic said: I have an important question. I´m having two codes on my 2006 cadillac dts 2006 with vin #1g6kd57y圆u108037. 7986 Views 8 Replies 4 Participants Last post by Kirsa, Jump to Latest. We've checked continuity for the ground wire back to the ecu for that cylinder and. 12 volts at the injector plug now, but it's still not firing. In result, fuelRe: Injector wiring, power/ground help! (invain) Well, we fixed the voltage problem, there was a short in the power wire for that injector and the connection back in the harness was pretty ****ty too. Once this has taken place, high pressure oil is directed on top of the injector intensifier piston.

This shifts the spool valve in the injector to the open state. The open coil is driven (via a 20A pulse) to open the injector. To drive the fuel injector, the FICM produces two control signals for each injector.

Video explains the how to test the Fuel Injector Electrical Actuation Diagnostics using a Wiring Diagram. Set it to the lowest range if the meter doesn’t autorange. There may be a slide lock that you need to move before you can press down on the tabs to remove the wiring harness.

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