06 F250 climate control sensor

Reply Subscribe

Thread Tools

Search this Thread

Aug 23, 2010 | 09:44 AM

rgarrett

Thread Starter

Freshman User

Joined: Jan 2003

Posts: 35

Likes: 0

From: in a house

06 F250 climate control sensor

Hi- Im having an issue where my a/c blows full blast all the time and have to exaggerate the cllimate control temp for both hot/cold to get the desired result. Im thinking the interior sensor needs replaced. I know where the small vent is on the dash, how do you replace this sensor?

thanks

Aug 23, 2010 | 10:42 AM

dchamberlain

Lead Driver

Joined: Sep 2007

Posts: 8,180

Likes: 669

From: Scio, OR

It may be a good idea to do some diagnostics before you start replacing stuff. There are three sensors feeding the EATC. The interior temp sensor, the ambient temp sensor and the sunload sensor. There is also coolant temperature data fed from the PCM. I don't know if any failure other than the interior temp sensor would cause your problem, but it wouldn't hurt to check them anyway.

The EATC sets and stores codes, just like any other module. I copied this from my service manual on how to read the EATC codes.

Quote:

The EATC module self-test will not detect concerns associated with data link messages like engine coolant temperature or vehicle speed signals. A scan tool must be used to retrieve these concerns.

The EATC module self-test will detect concerns in the system control functions and will display hard diagnostic trouble codes (DTCs) in addition to intermittent diagnostic trouble codes for concerns that occur during system operation. The vehicle interior temperature should be between 4°-32°C (40-90°F) when performing the self-test. If the temperatures are not within the specified ranges, false in-car temperature sensor DTCs will be displayed.
The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.
To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTOMATIC button within two seconds . The display will show a pulse tracer going around the center of the display window. The test may run as long as 30 seconds . Record all DTCs displayed.
If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given.
If a condition exists but no DTCs appear during the self-test, GO to Symptom Chart Condition: The EATC System Is Inoperative, Intermittent or Improper Operation. See: Symptom Related Diagnostic Procedures
To exit self-test and retain all intermittent DTCs, push the blue (cooler temperature) button. The control will exit self-test, retain all intermittent DTCs and then turn OFF (display blank).
To exit self-test and clear all DTCs, press the DEFROST button. The vacuum fluorescent display window will show 888 and all function symbols for one second . Then, the EATC control assembly will turn OFF (display blank) and all DTCs will be cleared.
Always exit the self-test before powering the system down (system turned OFF).
Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.

The codes are shown in the attached file...