1.) With the power off, measure the resistance between the computer test ground
(black/white wire) on the self test connector and battery ground. You should see less than 2.0 ohms.
With the car off, and my meter on 200 on OHM's I got a .6 OHMS
2.) MAP circuit: Check the resistance between the black/white wire on the MAP/BARO sensor and then the black/white wire on the EGR and the same wire on the TPS. It should be less than 1 ohms. Higher resistance than 1 ohms indicates a problem with the 10 pin connector or the splice inside the main harness where the wire from the 10 pin connectors joins the rest of the black/white wire. Next check the resistance between the black/white wire and the negative battery cable. It should be less than 2.0 ohms.
Black/White on Map and Black/White on EGR- .6 Ohms
Black/White on Map and Black/White on TPS- .6 Ohms
Black/White on EGR and Black White on TPS- .2 Ohms
3.) Engine mounted sensor circuit: Check the resistance between the black/white wire on the TPS and battery ground. It should be less than 2.0 ohms. Higher resistance than 2.0 ohms indicates a problem with the 10 pin connector or the splice inside the main harness where the wire from the 10 pin connectors joins the rest of the black/white wire.
I got no resistance with Black/White wire on TPS and Battery Ground..
But i did get resistance on the TPS Red/White wire and Battery Ground- .4 OHMS
Let me know guys...
The wire inside the harness where the TPS/MAP/Baro black/white wires join the black/white wire for the self test connector has a bad connection.
You get to split the harness open at the point where the 10 pin connector wiring joins the main harness and look for the splice in the black/white wire. When you find it, look for signs of the wire breaking under the insulation or a faulty crimp or solder joint.