You probably have this:
"TSB 02-23-6 CLIMATE CONTROL - ERRATIC OPERATION OF THE COOL/WARM FUNCTION OF THE TEMPERATURE CONTROL SYSTEM - REPAIR PROCEDURE FOR STRATIFICATION (SECONDARY) TEMPERATURE BLEND DOOR
Publication Date: November 19, 2002
FORD: 1996-2003 SABLE, TAURUS
LINCOLN: 1998-2002 CONTINENTAL
Some vehicles may exhibit constant warm air discharge from the climate control system. This may be caused by the Climate Control Stratification Door (Secondary Temperature Blend Door) which may distort and bind.
Replace the Climate Control Stratification (Secondary) Temperature Blend Door with a redesigned service part. The service procedure has changed as this door is now available separately versus replacing the case assembly.
System - EATC
diagnostics may show a code B1249 or codes 022, 024 or 025. System defaults to full heat. System operates normally after running EATC
on-demand self test, no concern found after performing appropriate Work Shop Manual Pin Point Test. Concern may repeat after two or more weeks.
Manual System - System has no temp control, possibly "popping" noise when changing temperature setting.
Stratification (Secondary) Temperature Blend Door Replacement
Remove the Instrument Panel. Refer to the appropriate model year Workshop Manual Section 501-12.
Remove the Temperature Blend Door Actuator. Refer to Workshop Manual Section 412-04.
The door control should now move freely. (depending on the extent of door interference, the door may not be able to be moved freely).
Inside the plenum, you will see the Stratification (Secondary) Temperature Blend Door or upper door attached to the main temperature blend door by an internal white nylon link. Disconnect the nylon link from the stratification door. Squeezing the clips together on the white nylon link should aid in removal (Figure 1).
Reach inside and remove the stratification door. Cutting the door with metal snip pliers near the pivots will provide easier removal.
Place the new door 3F1Z-19D842-AA inside the plenum chamber and slide in the large pivot point first (which is closest to you) then slide the door into position until the small door pivot point on the front side of the case clicks into place.
Connect the nylon link, reinstall the temperature blend door actuator, and instrument panel per the Workshop Manual."
On some vehicles, performing the climate control self-test resets it, and it starts working again. Doing the self test will also display any DTC's. Here's how to do it:
Remote Climate Control Module Self-Test
The remote climate control (RCC
) 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.
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°-38°C (40°-100°F) when carrying out the self-test. If the temperature is not within the specified range, 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 AUTO button within two seconds. The display will show a dashed line in the center of the climate control display window of the integrated control panel (ICP
The test may run as long as 30 seconds. Record all DTCs displayed. The self-test is completed when 888 appears in the center of the climate control display window of the ICP
If any DTCs appear during the self-test, refer to the REMOTE CLIMATE CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC
) INDEX. Carry out the diagnostic procedure given under ACTION TO TAKE for each DTC
If a condition exists but no DTCs appear during the self-test, refer to the SYMPTOM CHART condition: The EATC
System Is Inoperative, Intermittent or Incorrect Operation.
To exit the self-test and retain all intermittent DTCs, press the "—" (cooler) side of the TEMP button. The RCC
module will exit the self-test and retain all intermittent DTCs.
To exit the self-test and clear all DTCs, press the front defrost button. All RCC
module 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.