Hi. I have 2006 VW Jetta 2.0 TDI .I don't know why my car injectors socet hasn't got power electric? I changed Crankshaft sensor I changed camshaft sensor I changed injectors wiring harness.
Those sensors wouldn't affect power to the injectors.
You need a voltmeter, it's an electrical problem, so you need a digital volt/ohm meter (DVOM), or also called a multi-meter, and digital because many car circuits that are computer related operate at very low voltages or power demands, from milliamps to thousands of volts, like the ignition delivers to the spark plugs. So you buy a cheap multi-meter, then you also need a wiring diagram for your car to see how the fuel injector circuit works. but start there where you plugged in the new injector harness.
You are looking for power to the injectors, with key on. The injector harness has 8 wires; each injector has a power wire and a ground wire, so 4 of the wires in the harness should have power. At least on most American cars, the injector works by having the ecm control the ground for the injector . The power is constant. It is only when the ecm momentarily internally grounds the injector circuit that the injector fires. On your VW, the injector power wires and ground wires both go to the ecm.
Nov 25, 2016 |
Volkswagen Jetta Cars & Trucks