A few months back I managed to knock off the passenger side mirror. I replaced with what I thought would be an acceptable replacement but not OEM. Of course, once received it DID NOT have the ambient sensor mounted or a place to mount the new one. Can someone send a wiring diagram of the sensor since I need to wire it to the old harness. Thanks!

 

Hope this helps you...

 

now that is awesome!! now I get my A/C set to 70degs back!! thank you!!!!

 

I'm also having this problem in my 2014 Superduty XL. I damaged the right mirror and bought new mirrors (unaware of the temp sensor) and the cluster (work truck edition) said -40 temp outside. After I realized what was causing this I pulled the temp sensor out of the old mirror and pulled the pins out of the old harness plug so I could insert them into aftermarket harness plug. One problem, stupid me forgot to label the wires for which wire was in what position.

The question I have is, is the sensor wired direction dependent? Also my wires seem to be different colored. I have the same yellow-green in the same position but instead of the black-yellow I have yellow-violet(or maybe brown) on the vehicle side. On the sensor side both wires are black with a green stripe. This leads me to believe it doesn't matter which position the temp sensor wires are put into the plug.

I have tried the temp sensor wires in one position the flipped them with no change in either configuration.

I have not performed any type of reset (unhook the battery for a half hour or so), should I?

Any help would be greatly appreciated.

 

I believe the numbers by wire are the pin location of that connector.

 

So after doing some more digging last night I came across the following statement in 412-00 Climate Control System — General Information and
Diagnostics Manual??

"The outside air temperature is displayed in the message center. The ambient air temperature sensor is
monitored by the PCM. The PCM sends the raw value through the HS-CAN to the BCM . The BCM sends
the data through the MS-CAN to the HVAC module. The HVAC module filters and stabilizes the value and
sends it back to the BCM . The BCM sends the filtered ambient temperature data to the IPC over the HSCAN
. The IPC sends the filtered ambient temperature data over the I-CAN for the Sync Gen II display when
equipped.
While the actual external temperature can vary continuously, the value that is displayed updates at a specific
rate depending on whether or not the engine is "hot" and whether or not the vehicle is moving.
When the external temperature is rising, the display updates slowly.
Updates (when the actual external temperature is higher than currently displayed value) is limited to 0.6°C
(1°F) every 20 seconds while the vehicle is moving at greater than 32 km/h (20 mph) for more than 60
seconds or 0.6°C (1°F) every 20 minutes if the vehicle is not moving at this speed. This is to prevent the
heat from the engine compartment from affecting the accuracy of the display.
When the external temperature is dropping, the display updates quickly. "

When I was doing the wiring in the driveway I was not moving, thus it was only updating every 20 minutes (much longer than I was patient for) on the way to work this morning it updated and it's working correctly.

 

Hey guys, I also am changing the mirrors on my 2011 f250 xl

made sure to buy mirrors with the sensor, but I do not see a wire to plug in to the wire coming off the new mirror and also there was not a sensor in the old mirror. Wondering if some base model trucks didn’t have this option?

 

I just bought a 2012 F-250. This truck has only 64k miles, but a rough life; it's not pretty. The previous owner had an excavating company and this was a real working truck. I was told he recently replaced the AC compressor, but never recharged the system because the blower fan isn't working.

The blower motor works though, so he put a toggle switch on it to get him through the winter. He bought a resistor pack for it, but never got it put in. I looked at it briefly, and you can reach up under the dash and unsnap it, but there appears to be insufficient room to remove it from it's hole. I'm thinking I'm going to have to remove (at least the passenger side and loosen up some of the driver side) to give me another inch of clearance from the firewall. Not looking forward to that.

This is the most basic model you can buy so it has not automatic temperature, dual climate or anything fancy like that. Heck, it just has AM/FM radio and crank windows.

I notice the information center on the dash reads crazy outside temperature like -20F (When it's 80 outside.) Obviously, this is wrong. I hear the temp sensor is in the RH mirror. I'm not sure if this was replaced with a mirror without a sensor, or if it's just gone bad.

I've read some forums where they say that the AC and the temperature sensor are tied together. I don't want to tear the dash out only to find out the problem is a sensor in the mirror. Can anyone tell me if the sensor is bad or missing, would that prevent the blower fan from running (even when on heat mode)? Or do I really have two problems that need addressed?

Thanks so much in advance.

 

I don't believe they work together. There is a temp sensor for the heat and AC inside the truck. Outside temp makes no difference.

 

I have been battling a false reading for almost a year now. I have a 2014 F550 XL and the AC is not affected by the temp reading being -20 at 80 actual outside temp. The biggest thing that concerns me is that the truck thinks it's very cold outside and starts up at an immediate idle of 1000-1200rpm. This causes the truck to smoke a bit before if smooths out after a few seconds. Seems to be unnecessary wear and tear on the internals.

Here is what I've done so far to no avail:

Replaced sensor with a Motorcraft part.
Verified the sensor is good on another F550
Cut out the connector in the door and soldered the wires together to rule out that connector
Verified 4.3 volts of current coming from the PCM with the truck engine off and key turned on
10.4 ohms from the door connector (now soldered together) going to the senor
10.4 ohms through the sensor by itself

Next step is to load test each battery to rule them out and test the alternator to rule it out.

Extremely frustrating ordeal.

I have another wacky ordeal with my turbo surging when driving empty on a flat road and my radio speakers intermittently not working. I'm starting to wonder if I do have a dead battery (don't know because it's summer time) or bad alternator if that might be the cause of these issues.

 

If the batteries are leaking or old don't bother load testing them. With these new trucks the batteries need to be at the top of there game for the truck to function correctly. You can't just replace one. A old battery will drain the life out of a new battery so you need 2.

 

Batteries load tested fine.

Turned out the problem was at the GEM. Lots of corroded pins. Got everything cleaned up and greased and the ambient air temp sensor, radio speakers, brake controller and all speeds on blower motor not work as they should. There was also a connector that was not all the way connected. With a little persuasion, it's back together.