tiznodd

iTrader: (4)

I know, another alternator thread... I did some searching and found enough info to get me where I'm at, but now I'm stumped.

The alternator is hooked up through the factory ECM (Blue/Green 2004 LQ4). The alternator was not working, so I tested the two wires going into the regulator and the green one has 12v, but the brown energizer wire has 0v. I wired the alternator manually using the resistor method and the alternator works fine.

I'd like to have the ECM control things rather than using the work-around method with the resistor. Any ideas why the ECM wouldn't put out a signal through the brown wire? Everything appears connected properly. Is there even an advantage to having the ECM control the alternator?

Thanks.

busta9876

iTrader: (3)

alternator should have two wires, gray and brown..not sure where you have a GREEN wire.

BROWN goes to Green PCM connector pin 15
GRAY goes to Green PCM connector pin 75

make sure those two are correct.

tiznodd

iTrader: (4)

I think it is gray actually. The flashlight I was using casts a blue light, so it probably looked green. I will double check the pins.