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2009 Nissan Xterra Off Road - Blower mix damper actuator is continuously cycling back and forth and will not shut off

The motor for the blend door opens all the way one way then the other on startup. It then stops for a few seconds then rotates slightly one way then back the other continuously and will not stop, Even with the key out of the ignition after you shut it off it still does this, I have had to unplug it to make it stop. Here is a link to the video of what it is doing on starting it and then trying to shut it off. Any ideas? https://youtu.be/sxdVdVJYp-o

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6ya6ya
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Posted on Jan 02, 2017

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pal03246
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SOURCE: 96 NISSAN MAXIMA SHUTS OFF UPON DECELLERATION OR WHEN STOPPED

Check to see if the floor on the passanger side is wet. If so, than your A/C drain clogged up and your ECM/computer got flodded by water causing all sorts of funky stuff happening. Right next to the gas pedal is a small cover attached to the computer. It has a clip in it. Remove the clip and tug on the cover. Look at the top of the computer to see if its rusted up. Remove the other side cover also, which is on passanger side floor next to your left foot(if you sitting in passenger seat). and check other side of ECM/computer. Check the ECM for rust on top.
If ALL of that looks OK, than I would replace the switch,(since you are telling me that the key got VERY hot) that is mounted on the back of the ignition cylinder. Its a white round switch that failes after a while especially car beeing 1996, just think about how many times that ignition has been turned ON/OFF since 1996. The mechanism in the switch failes, causing starting issues and funky electrical issues.
Does the car have a remote starter installed?? Or didi it have one in the past?? I have seen companies that install them cause some damage to the harnesses on the switch that is mounted to the back of the igniton cylinder. They use "scotch locks" to connect the remote starter and after a while the connection corrode and cause problems too.
Anyways, check the computer for rust first. Than I would install that switch on back of the igniton. You can buy the switch seperately. You dont need the whole ignition assembly/switch only. Switch is pretty cheap (approx $50 ?). Try that and post results. I would feel pretty good about the switch beeing faulty. I have ssen them fail in the past and that's where your power comes into for the starter circuit.(key getting HOT, switch shorting out, making the key hot and starting the car without the key)

Posted on Jul 27, 2008

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  • 491 Answers

SOURCE: '01 Nissan Xterra won't turn over starter, after trying to start the headlights flash.

starter possibly going bad

Posted on Nov 03, 2008

auditech13
  • 43 Answers

SOURCE: Driver door central locking

You need a new door lock unit to fix properly.

Posted on May 28, 2009

  • 436 Answers

SOURCE: How do you fix the driver side air blend door actuator?

you cannot repair the actuator you need to replace it with new one. These motors turn but get weak with time. if you test it, it works, put it in and it doesn't. this is because the motor is weak, unfortunately GM does not sell these motors separately.

Posted on Aug 23, 2009

  • 401 Answers

SOURCE: my blower motor stays on after key is off and door is open

hi for the blower motor staying on replace the resistor
check the connector make sure it is not corroded or melted
should have nothing to do with the remote start
this is an after market remote start
then the module could be feeding the blower motor
i have seen the after market modules do some strange things
hope this helps

Posted on Nov 11, 2009

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2 Answers

Side windows on passenger side fog up. Not on driver's side, only on passenger.


so find out which vent is dead,?
before 5 gallon LYSOL flush an a week long GAG !
make sure first never to use RECRIC, when wanting to defog.
and is the A/C running in dash defrost mode (compressor main shaft spins)

if a vent is dead, its a bad damper valve, (not saying a part, a function)
the book is free, you can read it, HVAC. see venting and dampers.
its very simple in concept, a fan, a damper and dry air. hot.
the heater core makes heat the non recirc, damage gives you fresh air, the A/C makes that air dry. and the dampers the supply all vents work work.
so make sure the controls are set right,
then see if the upper vents all blow, with hand waved on them.
see? that is easy, and not reporting a dead vent ,makes help harder.
the FSM is on line, ill look for you.
but first HVAC 101
  1. does blower work on high?
  2. does the recirc turn to fresh are,and you get fresh air with blower off moving, at all top vents. y/n
  3. do you have full heat? 180F + engine heat (scan tool shows this as ECT)
  4. do all vents top work , blower on?
  5. is the A/C compressor working in A/c mode (cold) and Defrost?
  6. more... below.
Rule one, dont work in dash until air bags are DEFEATED (injury) (pull battery neg lug, and wait 1hour)

got fsm page open, ill state some facts needed to fix this.

first ill prove the dash system does not need total dismantle
for all jobs. Does NOT.
Air /mix blend door
Single Zone/Dual Zone Driver's Side(FSM)
  1. Disconnect and isolate the negative battery cable.
  2. Remove the instrument panel silencer from the driver side of the instrument panel.
  3. Remove the three screws that secure the blend door actuator to the driver side of the HVAC air distribution housing .
  4. Remove the blend door actuator from the air distribution housing and disconnect the HVAC wire harness connector from the actuator.
  5. Remove the blend door actuator from the vehicle.

next page, is blend door 2, type.
has vacuum servos.
we move the controls and make sure all servo vacuum motors
work

this car has driver side and passenger side seperate blend doors.
so,,, we are getting close here>
?
if the defroster fails,(seems not) then that is electric motor drive
and very hard to test . (if not door jam)

in any case, we need to know what part is failing,
if the passenger blend is dead.
seen below,
we then must find out why
1: just stuck.
2: servo actuator failure
3: controls to #2 above bad, or connections to each.


25414659-fivq5xl3wt5ieutt12itpjng-5-0.jpg
login to alldata.com see HVAC chapter, read how it works and the tests.

Feb 11, 2015 | 2001 Jeep Grand Cherokee

1 Answer

Blower motor works but no air out of vents


that means the dampers are failing.
cause by.
1: stuck damper. or stuck damper motor, or actuator.
2: bad controls. to the damper actuators.

the FSM covers this, read the FSM.
see chapter HVAC.
it shows all steps to do.

TJ 1999 here
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service
page 35 on.
this car has vacuum controls and blend door motor.

chapter heatingandaircondiditioning.

Feb 04, 2014 | 1999 Jeep Wrangler

1 Answer

Air blend door actuator


This could be a computer problem or a defective blend door actuator .most common is the blend door actuator . Now if the actuator is not giving the proper feedback to say what position is it in then if could be defective . im not saying to buy from this website ok ....it simply to show you the part picture . you should be able to get it at auto zone or advanced auto locally
http://www.partsgeek.com/ss/?i=1&ssq=air+flap&x=0&y=0

Nov 05, 2013 | 2004 Pontiac Grand Prix

1 Answer

Air conditioning does not blow cold air in my 2004 nissan x terra


If your a/c compressor kicks on and your manifold gauges show proper hi/lo readings then I would inspect the blend door. The blend door is a motor that moves back and forth when u set the temp for hot or cold . In your case, it may be stuck in the same position. The blend door is located in the dash, usually behind the glove box or in that general area. I hope you are able to fix your problem. Scott

Jan 22, 2013 | 2004 Nissan XTerra

1 Answer

2002 toyota tacoma air damper doesn't seem to close all the way


Your blend door is actuated by the motor shown below. It is possible the door is sticking or the actuator has internal damage.
You would have to remove the heater to access the actuator...



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Jul 08, 2017 | 2002 Toyota Tacoma

2 Answers

Blend door for front temp control is stuck in the 'cold' position this winter. Is there a way to manually move and fix the door to get some heat?


you have to replace the blend (heat/cold) door motor, you can try to remove motor and turn door and try to jam something in door handle slot ,that the part that the motor turns,hope this helps.

Dec 26, 2009 | 2001 Ford Windstar

2 Answers

My a/c won't blow cold and heater doesnt get hot


Is the heater working? Turn the A.C. off with the car at an idle. Turn the A.C. on and listen for the compressor to turn on. (should hear a click under the hood and the motor should change pitch. If no noise, the compressor is not comming on. The o-rings were bad about leaking on these cars, letting out all the freeon. If there is no freeon, the low pressure switch won't let the compressor run.

May 20, 2009 | 1997 Ford Taurus

1 Answer

Aircondition blows hot air on normal but blows cold air on max


The temp blend door rotates between allowing heat through the heater core, or cold air through the a/cevaporator, or a blending of the 2 by being anywhere between the two.

I would check the heater a/c control head first and hope it's just the control head.
----------------
here is a descripton of the system.

Section 12-03A: Air Conditioning, Heater System, Manual, Ranger and Explorer 1996 Ranger and Explorer Workshop Manual
DESCRIPTION AND OPERATION A/C-Heater System, Manual The manual air conditioning/heater system used in these vehicles is a split-case, blend air design. This design includes the following major components:
  • An A/C evaporator housing (19850) which is attached to the engine compartment side of the dash panel (01610). This assembly includes: (1) the A/C evaporator core (19860), (2) the suction accumulator/drier (19C836), (3) the A/C cycling switch (19E561), (4) an internal, A/C evaporator core orifice (19D990) located inside the inlet line to the A/C evaporator core, (5) a blower motor (18527), (6) a blower motor wheel (18504), (7) a heater blower motor switch resistor (18591), and (8) the A/C evaporator case (19897).
  • A heater air plenum chamber (18471) which attaches to the passenger compartment side of the dash panel. This assembly includes: (1) the outside/recirculating air inlet door, (2) the panel door, (3) the floor defrost door, (4) the temperature blend door, and (5) the heater core (18476).
  • Other components which link and/or control the heating and air conditioning systems include: (1) the A/C control (19980), (2) the ducts and registers, (3) the windshield defroster hose nozzle (18490), (4) the control cables, (5) the vacuum lines, (6) the refrigerant tubes and hoses, (7) the A/C compressor (19703), and (8) the A/C condenser core (19712).
050240f.gif
The A/C control (19980) assembly consists of three main parts:
  • The function selector knob, a vacuum selector valve combined with an internal electrical switch.
  • Heater blower motor switch (18578), an electrical switch that provides four speeds of A/C blower motor operation.
  • A temperature control knob, which controls the position of the temperature blend door mounted on A/C evaporator housing (19850) assembly.
---------------------------
Temperature Control
The temperature selector actuates a variable resistance switch. This switch varies the voltage to an electric actuator used to position the temperature blend door. Positioning the temperature control in any position between COOL and WARM causes the temperature blend door to direct more or less outside air through or around the heater core (18476) for whatever proportion of heated or unheated outside air is desired. The air blends together as it leaves the heater core and enters the heater air plenum chamber (18471) for distribution.
---------------------------
System Airflow Description Air is drawn into the system by the blower motor (18527) through the outside-recirc. door opening. The air is blown through the A/C evaporator core (19860) and then the heater core (18476) (when the temperature control is moved toward the WARM position). When the temperature blend door is in the maximum COOL position, the air bypasses the heater core. When the temperature control is moved to the right, away from the maximum COOL position, air passes through the heater core where it is warmed, and then mixed with the cool air before it is discharged through the registers. OFF
With the function selector in the OFF position, the outside-recirc. door is in the recirculated air position. It is closed to outside air and no air passes through the system. The blower motor is off. MAX A/C
NOTE: No temperature modulation is possible in the MAX A/C position.

In the MAX A/C position, the outside-recirc. air door is in the recirculated air position. All of the air discharges through the panel registers except for a small amount of floor bleed. The A/C compressor (19703) operates in this function control setting.
--------------------------------
You have to almost remove the dash to get this part out.
Removal
  1. Disconnect battery ground cable.
  1. NOTE: Refer to Section 01-12 for instrument panel removal and installation procedure.

    Loosen instrument panel (04320) and pull back from cowl.
  1. Remove A/C electronic door actuator motor electrical connector from bracket on A/C evaporator housing.
  1. Remove three A/C electronic door actuator motor retaining screws.
  1. NOTE: The mounting bracket remains in place on the A/C evaporator housing.

    Lift A/C electronic door actuator motor vertically approximately 12mm (1/2 inch) to disengage it from bracket and actuator shaft, then pull A/C electronic door actuator motor back toward passenger compartment.
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Apr 25, 2009 | 1996 Ford Explorer

2 Answers

2004 Ford Expedition rear floor cool/heat


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Item Part Number Description 1 — Air inlet door 2 — Temperature blend door 3 — Headliner airflow 4 — Auxiliary mode door 5 — Floor airflow 6 18476 Heater core 7 19860 Evaporator core 8 19805 Blower motor
The auxiliary A/C and heating system has the following features:
  • The auxiliary A/C and heating system is functional whenever the instrument panel mounted A/C control is in any position except OFF.
  • The auxiliary blower motor recirculates the air inside the vehicle. Outside air is not available to the auxiliary system.
  • Air is cooled and dehumidified by the auxiliary A/C evaporator core only if the instrument panel mounted A/C control is adjusted to a position that requires A/C compressor operation.
  • The temperature blend door and the auxiliary mode door are controlled by electric actuator motors.
  • Movement of the auxiliary temperature control between COOL and WARM causes a corresponding movement of the temperature blend door to mix air flowing through and around the auxiliary heater core.
  • Movement of the auxiliary mode control between PANEL and FLOOR causes a corresponding movement of the auxiliary mode door to direct air flow between the panel (headliner) registers and the floor duct.
---------------------------------------
I would say the auxiliary mode door (#4) electric motor is not wokring.

=============================================
Auxiliary Blend Door Actuator —Air Distribution Removal and Installation
  1. Remove the RH quarter trim panel cup holder and access panel.
  1. Remove the screws.
  1. Disconnect the blend door actuator electrical connector.
  1. To install, reverse the removal procedure.

Jan 14, 2009 | 2004 Ford Expedition

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