Engine/Transmission (1994 - 1998) speed sensor wires testing? also alt pulley size?

[hereismylife]

I am trying to test my speed sensor ( the one on the harmonic balancer). I have a green , red , and black wire. I am trying to figure out where these wires go and what they do?



Also I am looking for the alt pulley size. Long story but I think I have the wrong pulley on my alt.



thanks

 

[Missouri Mule]

In my 96 service manual ground from PCM black/light blue, sensor signal grey/ black and supplied voltage (5 volts) violet/white. (The second color would be a stripe. )



Pulley?

 

[hereismylife]

I guess where the sensor plugs in it changes to the other colors. I do not have these wires. If you look at the sensor itself it has the red green n blk wires. So basically I need to know at the sensor conector what wire does what.



thanks

 

[Missouri Mule]

In the service manual it shows the connector to be round the teminals are two on the bottom one on top/middle. Top no. 1 terminal =5volt supply, left/bottom no. 2 terminal = sensor signal and right/bottom no. 3 terminal = ground. See if this is the same as yours, may be they just change the color of the wires.



You can unplug the connetor and using multi-meter look for the terminal that supplies power.

To find the ground put one of the multi-meter probes on the positve battery post and check the other two terminal for ground.

That leaves the third to as the signal wire.

 

[hereismylife]

thank you that is what I was looking for now i have to see if you were talk looking at the plug from the front or looking from the back side for #2 and # 3





thanks again...

 

[Missouri Mule]

Looking into connector (so that should be the front of it).



By the way that is looking at the female terminals.

 

[hereismylife]

thanks for the help I will check it out... .