power stage coil

[scrotec]

Could some one please identify the four wires to the coils of an 02 jetta 1.8 Turbo.

[Jeremy airjer W]

The black w/ violet is the power from the power supply relay.

The brown and brown w/yellow are the grounds

The black w/blue, yellow, brown or violet is the control from the computer. Coil number four will have two black w/violets. Pin three is the control

[scrotec]

Thanks Jeremy, number one control wire is always grounded so i unplugged the ecu and ohmed all four wires end to end and to ground, all checked good, then checked unpluged ecu control terminals and number one terminal was grounded. Must need an ecu.