Does anyone know or have a diagram of the pin layout of the ECM or the connectors that go into it?

I’m trying to figure out what wire the ECT(engine control temperature) sensor is so i can splice it.


By the way I have a 98 1.8T FWD automatic.

Thanks

 

Why not just go right to the sensor to see what color and then find it at the ecu or just splice it right at the sensor?


BTW which sensor is the ECT exactly?

 

the engine coolant temperature sensor is located behind the engine(close to firewall)below the crank case vent line.

I dont feel like cutting the harness apart just to find one wire. And i need to splice the wire at the ECM connector because the rest of the wire has been coroded with coolant.

any suggestions?

 

Not enough room to pull the sensor harness to look at what color it is? I will try looking at mine today to see if I can see what color the wires are.

 

Wait...Are the colors of the wires going into the ecm all different?

 

Anyway...Heres a picture of the smaller connector going into the ECM. As you see, theres 2 terminals that have coolant residue, i just want to make sure which one is the engine coolant temperature sensor. I dont know why theres 2. Correct me if im wrong, but I thought one wire goes to the ECM and the other to the Instument Cluster and the other 2 wires were used as ground.

 

How would or did coolant travel up the wires to the ECM?

 

Im not sure either but how the mechanic said that basically, when the car overheated, the coolant built up too much pressure and it seeped through the wiring and into the ecm and instrument cluster. And as you can see,i had put in generic coolant instead of g12.[:'(]

 

If this is true then you will need to replace both wires all the way back to the sensors.

 

Yes, I am replacing the sensor as well as the connector and new wires up until the ECM connector.

I went to a junkyard and ninja’d a connector off a Volkswagen and went ahead and spliced 18 gauge wires onto it.

All there is to do is to connect my new wiring harness onto the ECM and into the Instrument Cluster.