TheBigRedOne
Well-Known LVC Member
Any way to test if a Blend Door Actuator is good or not? I have one but am not sure if it it works. I think it is new,
Thanks,
Thanks,
If it's in the car you can try this but for outside of the car there inst any method.
Electronic Automatic Temperature Control Unit Self-Test
The EATC self-test will detect concerns in the system control functions and will display diagnostic trouble codes (DTC) in addition to intermittent diagnostic trouble codes for concerns that occur during system operation. The vehicle interior temperature should be between 16-26°C (60-80°F) when performing the self-test. If the temperatures are not within the specified ranges, false in-car temperature sensor DTCs will be displayed. 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, refer to the Symptom Chart Condition: EATC System Inoperative, Intermittent or Improper Operation.
The self-test can be initiated at any time with any resulting DTCs displayed. 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.
To exit self-test and retain DTCs, push the blue (cooler) button. The control will exit self-test, retain all diagnostic trouble codes and then turn OFF (display blank).
To exit self-test and clear all diagnostic trouble codes, 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.
The self-test should be deactivated before powering the system down (system turned OFF). Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.
EATC SYSTEM ON-BOARD DIAGNOSTIC TROUBLE CODES
024 Fault in blend door calibration during self test
025 Intermittent fault in blend door calibration
030 Automatic temperature control sensor shorted
031 Automatic temperature control sensor open
040 Ambient sensor shorted
041 Ambient sensor open
042 Ambient sensor intermittent short
043 Ambient sensor intermittent open
050 Sunload sensor shorted
052 Sunload sensor intermittent short
115 Intermittent engine coolant temperature signal
125 Intermittent vehicle speed signal
So i tried the self test and got a code 155.The gray will move up on it's own when lowering the temp setting but will not move down when raising the temp setting.Is this self test done with motor on or off?
That sounds like the upper black arm may be broke or cracked. Easy way to confirm: pull the headlight switch and small panel, then the dash trim so you can access screws to remove the message center. You will be able to see if it is cracked or broken. If so, search my other posts, I made a post showing how to fix this in 10 min using a zip tie, without removing the dash for the top and a small clamp for the grey connecting arm (both of mine were cracked). I included pics so you know what exactly to look for.So i tried the self test and got a code 155.The gray will move up on it's own when lowering the temp setting but will not move down when raising the temp setting.
Thanks,That sounds like the upper black arm may be broke or cracked. Easy way to confirm: pull the headlight switch and small panel, then the dash trim so you can access screws to remove the message center. You will be able to see if it is cracked or broken. If so, search my other posts, I made a post showing how to fix this in 10 min using a zip tie, without removing the dash for the top and a small clamp for the grey connecting arm (both of mine were cracked). I included pics so you know what exactly to look for.