Coolant Temperature Sensor wiring diagram needed

2000 FORD F-150

163,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC

GESTAABO

MEMBER
5 POSTS

I found the Cylinder Head Temperature Sensor behind the thermostat housing. However, the two wires going to the plug are chewed through by mice right at the plug and I cannot find the wire that it connected to. I’m going to buy a new wire connector, but where exactly does it go? Any specific picture of where the wire connector goes would be great because I’ll have to find it to connect the wires from the connector to the wire that links to the PCM. Thanks. That white plug is the connector. Also, apologies for the picture rotation this website put it sideways.

Image (Click to enlarge)

Jun 9, 2020 at 11:19 PM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,240 POSTS

Hi,

The yellow wire with a light green tracer goes to the PCM (right side of engine compartment). The gray wire with a red tracer joins with other sensors. See the attached pics.

Let me know if that helps.

Joe

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Feb 15, 2021 at 1:52 AM

GESTAABO

MEMBER
5 POSTS

Thanks for the info and diagram. I am going to take a look at the PCM and DPFE to trace the wires. I will let you know how it goes after I am able to work on it today.

Feb 15, 2021 at 1:52 AM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,240 POSTS

Sounds good. Let me know if you need anything else.

Take care,
Joe

Feb 15, 2021 at 1:52 AM

GESTAABO

MEMBER
5 POSTS

The part is now on the way. I did some digging around and found those wires hidden under electrical tape from the previous owner. Just to be sure I do not put the wires in the wrong slots on the connector to the sensor, which colored wire is on the left and the right of the connector for sensor? Yellow/green right gray/red left? I see it on the diagram but just want to clarify before I put everything back together.

Feb 15, 2021 at 1:52 AM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,240 POSTS

Interestingly, there is no pin location info. Was there anything left on the old plug? To be honest, all it does to function is produce resistance based on temperature. I don't think it would even matter simply because power runs directly through it and resistance would be the same in either direction.

Let me know.

Joe

Feb 15, 2021 at 1:53 AM

GESTAABO

MEMBER
5 POSTS

Unfortunately no, there was nothing left on the old plug. I was wondering the same thing, if it even mattered which side or not. I’ll just go off the diagram to be safe. Will let you know how it goes after I get the part today and get everything back together now that the part should arrive.

Feb 15, 2021 at 1:53 AM

GESTAABO

MEMBER
5 POSTS

Update: Solved the issue. Thanks for your help! Just to give the info, I did follow the wiring diagram so yellow/green right and gray/red left and worked like a charm. Used some wire holders and crimped them down. Covered them up good as to prevent corrosion.

Feb 15, 2021 at 1:53 AM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,240 POSTS

Hi,

That's good news. I'm glad to hear you got it taken care of. Feel free to come back anytime if you need anything.

Take care of yourself,

Joe

Feb 15, 2021 at 1:53 AM

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