Question about 1993 Mercedes-Benz Mercedes Benz 300 Class

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Blower works but air is not cooled - 1993 Mercedes-Benz Mercedes Benz 300 Class

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Your ac compressor probabley needs recharged.

Posted on Jul 29, 2009

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1 Answer

Cooling fans on 2007 ford edge not working


If you removed coolant hoses you probably have air in the cooling system now and the coolant isn't at the sensor.you need to bleed the air out.

Oct 12, 2017 | Ford Cars & Trucks

1 Answer

2007 Buick Lucerne CXL: Cooled seats not working. LIghts come on, temperature adjusters work but the motors under the seats do not come on.


Air Circulation
When the heated/cool seat switch is pressed to initiate operation of the climate control seat (CCS) system, cabin air is drawn through the heated/cool ventilation module air filter, then directed through passages in the foam of the seat cushion and seat back to the seat's occupant. In order for the CCS system to operate to its optimum performance, it is crucial to have unrestricted air flow through the system. A dirty or restricted air filter, the blockage of an exhaust air duct, a misaligned heated/cool ventilation module, or incorrect foam installation of the seat cushion or seat back will all have negative effects on CCS operation.
Heated/Cool Ventilation Module
Each heated/cool seat has 2 ventilation modules, one located under the seat cushion and one located in the seat back. These modules are controlled by the climate control seat module (CCSM). Each ventilation module contains a thermo-electric device (TED), a temperature sensor, and a blower motor. The TED and temperature sensor are mounted downstream of the blower motor. Each TED consists of a circuit of positive and negative connections sandwiched between 2 ceramic plates. Each ceramic plate is equipped with copper fins for heat exchange. The air flowing past these fins is either directed as conditioned air into the seat cushion and seat back, or directed into the cabin as waste air.
A TED is essentially a solid state heat pump that is used to heat or cool the air supply to the seat cushion and seat back. When voltage is applied to a TED, one side releases energy as heat, while the opposite side absorbs energy and gets cold. When the polarity of the current flow to the TEDs is switched, the hot and cool sides of the TED reverse.
During the following climate control seat system description and operation, the TEDs, blower motors, and temperature sensors will be referenced independently even though they are all packaged together as a module.
Climate Control Seat (CCS) System
The CCS system consists of two heated/cool ventilation modules and one climate control seat module (CCSM) that controls both the driver and passenger heated/cool seats systems. The CCSM is mounted below the front passenger seat cushion. It receives power from both, battery positive voltage and ignition 3 voltage.
Once a CCS system is activated, cabin air is drawn through the seat blower motors and directed across the fins of each of the thermo-electric device (TED) located under the seat cushion and in the seat back. The air is either heated or cooled as it passes over the TEDs. This conditioned air is then directed through channels in the foam of the seat pad and through small holes in the seat cover to the occupant. Once the system is activated, the CCSM uses a set of algorithms to control the temperature of the selected heating or cooling modes.
Your best bet is to take your vehicle to a qualified repair shop an have it diagnosed .
DTC B19A4: Driver Seat Back Blower Speed Circuit High

DTC B19A8: Driver Seat Back Blower Speed Circuit Short to Ground

DTC B103D: Driver Blower Power Circuit

DTC B272E: Driver Seat Back Blower Circuit Open
DTC B19A3: Driver Seat Cushion Blower Speed Circuit High

DTC B19A7: Driver Seat Cushion Blower Speed Circuit Short to Ground

DTC B2729: Driver Seat Cushion Over Temperature
DTC B19A2: Passenger Seat Back Blower Speed Circuit High

DTC B19A6: Passenger Seat Back Blower Speed Circuit Short to Ground

DTC B111D: Passenger Blower Power Circuit

DTC B272F: Passenger Seat Back Blower Circuit Open
DTC B19A1: Passenger Seat Cushion Blower Speed Circuit High

DTC B19A5: Passenger Seat Cushion Blower Speed Circuit Short to Ground

DTC B272A: Passenger Seat Cushion Over Temperature
Driver and Passenger Heated/Cool Seats Inoperative
  1. Ignition OFF, disconnect the C1 harness connector at the CCSM.
  2. Test for less than 5 ohms between the ground circuit terminal M and ground.
  3. ?‡'
    If greater than the specified range, test the ground circuit for an open/high resistance.

  4. Verify that a test lamp illuminates between the B+ circuit terminal E and ground.
  5. ?‡'
    If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

  6. Disconnect the C2 harness connector at the CCSM.
  7. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 1 and ground.
  8. ?‡'
    If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

  9. If all circuits test normal, replace the CCSM.


Sorry

Jul 10, 2016 | 2007 Buick Lucerne CXS Sedan

1 Answer

The heater blower stopped working and the fuse is not blown?


Blower Motor Removal & Installation W/O Air Conditioning Blower Motor (W/O Air Conditioning) gm-10-00-634.gif

To Remove:
  1. Remove the PCM.
  2. Remove the coolant reservoir.
  3. Remove the rear coolant recovery reservoir mounting stud.
  4. Disconnect the cooling tube from the blower motor.
  5. Disconnect the electrical connector from the blower motor.
  6. Remove the blower motor mounting bolts.
  7. Remove the blower motor insulating cover.
  8. Remove the blower motor.
To Install:
  1. Install the blower motor.
  2. Install the blower motor mounting bolts.
  3. Connect the electrical connector to the blower motor.
  4. Connect the cooling tube to the blower motor.
  5. Install the rear coolant recovery reservoir mounting stud.
  6. Install the coolant reservoir.
  7. Install the PCM.
W/ Air Conditioning Blower Motor (W/ Air Conditioning) gm-10-00-633.gif

To Remove:
  1. Remove the PCM.
  2. Remove the coolant reservoir.
  3. Remove the rear coolant recovery reservoir mounting stud.
  4. Disconnect the electrical connector from the blower motor.
  5. Move the PCM connectors out of the way.
  6. Remove the blower motor access cover screws. CAUTION
    Do not cut any deeper than necessary in order to remove the access cover.
  7. Cut through the access cover on the cut line using a sharp utility knife.
  8. Disconnect the cooling tube from the blower motor.
  9. Remove the blower motor mounting bolts.
  10. Remove the blower motor.
To Install:
  1. Install the blower motor.
  2. Install the blower motor mounting bolts.
  3. Connect the cooling tube to the blower motor.
  4. Install the blower motor access cover.
  5. Install the blower motor access cover retaining screws.
  6. Using black weather-strip adhesive, seal the cut line.
  7. Connect the blower motor electrical connector.
  8. Reposition the PCM connectors.
  9. Install the rear coolant recovery reservoir mounting stud.
  10. Install the coolant reservoir.
  11. Install the PCM.
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Feb 08, 2011 | 1996 Chevrolet Blazer

1 Answer

How to change blowermotor on 2001 gmc jimmy


Blower Motor Removal & Installation W/O Air Conditioning Blower Motor (W/O Air Conditioning) gm-10-00-634.gif

To Remove:
  1. Remove the PCM.
  2. Remove the coolant reservoir.
  3. Remove the rear coolant recovery reservoir mounting stud.
  4. Disconnect the cooling tube from the blower motor.
  5. Disconnect the electrical connector from the blower motor.
  6. Remove the blower motor mounting bolts.
  7. Remove the blower motor insulating cover.
  8. Remove the blower motor.
To Install:
  1. Install the blower motor.
  2. Install the blower motor mounting bolts.
  3. Connect the electrical connector to the blower motor.
  4. Connect the cooling tube to the blower motor.
  5. Install the rear coolant recovery reservoir mounting stud.
  6. Install the coolant reservoir.
  7. Install the PCM.
W/ Air Conditioning Blower Motor (W/ Air Conditioning) gm-10-00-633.gif

To Remove:
  1. Remove the PCM.
  2. Remove the coolant reservoir.
  3. Remove the rear coolant recovery reservoir mounting stud.
  4. Disconnect the electrical connector from the blower motor.
  5. Move the PCM connectors out of the way.
  6. Remove the blower motor access cover screws. CAUTION
    Do not cut any deeper than necessary in order to remove the access cover.
  7. Cut through the access cover on the cut line using a sharp utility knife.
  8. Disconnect the cooling tube from the blower motor.
  9. Remove the blower motor mounting bolts.
  10. Remove the blower motor.
To Install:
  1. Install the blower motor.
  2. Install the blower motor mounting bolts.
  3. Connect the cooling tube to the blower motor.
  4. Install the blower motor access cover.
  5. Install the blower motor access cover retaining screws.
  6. Using black weather-strip adhesive, seal the cut line.
  7. Connect the blower motor electrical connector.
  8. Reposition the PCM connectors.
  9. Install the rear coolant recovery reservoir mounting stud.
  10. Install the coolant reservoir.
  11. Install the PCM.
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Dec 08, 2010 | 2001 GMC Jimmy

2 Answers

Ac fan speed


Replace the blower motor resister,this is the speeds for the blower motor,it is located very near the blower motor,and is mounted on the blower box,and it actually goes inside the box,to keep it cool.The reason for it`s failure is the blower motor,even though the blower motor sounds,and runs good,it is drawing too many amps.If this was at all helpful,please rate,thank you.

Jul 27, 2010 | 2001 Ford Expedition

1 Answer

How to install a front blower motor in a 96 ford explorer


Blower Motor - REMOVAL & INSTALLATION
(see Figures 1 and 2)

8e5714d.jpg

Fig. 1: Exploded view of the blower motor mounting

ff3bdf8.jpg

Fig. 2: Exploded view of the blower motor and wheel (fan) assembly

Without Air Conditioning

  1. Disconnect the negative battery cable.
  2. Remove the air cleaner or air inlet duct, as necessary.
  3. If necessary, Remove the speed control module and the washer fluid reservoir.

2587a00.jpg

Fig. 3: To remove the blower motor, first disconnect the electrical wire harness plug...

f234e79.jpg

Fig. 4: ...then remove the blower motor cooling tube from the motor
  1. Disconnect the wire harness connector from the blower motor by pushing down on the connector tabs and pulling the connector off of the motor.
  2. Disconnect the blower motor cooling tube at the blower motor.
3bbd0e1.jpg

Fig. 5: Remove the blower motor attaching screws and the washer fluid reservoir...

8da3ac1.jpg

Fig. 6: ...then slide the blower motor from the housing. Take care to not damage the blower wheel (arrow)
  1. Remove the 2 screws attaching the blower motor and wheel to the heater blower assembly.
  2. Holding the cooling tube aside, pull the blower motor and wheel from the heater blower assembly and remove it from the vehicle.
  3. Remove the blower wheel push-nut and/or clamp from the motor shaft and pull the blower wheel from the motor shaft.
To install:
  1. Install the blower wheel on the blower motor shaft.
  2. Install the hub clamp and/or push-nut.
  3. Holding the cooling tube aside, position the blower motor and wheel on the heater blower assembly and install the 2 attaching screws.
  4. Connect the blower motor cooling tube and the wire harness connector.
  5. Install the vacuum reservoir on the hoses with the 1 screws.
  6. If removed, install the speed control module and the washer fluid reservoir.
  7. Install the air cleaner or air inlet duct, as necessary.
  8. Connect the negative battery cable and check the system for proper operation.

With Air Conditioning
  1. Disconnect the negative battery cable.
  2. In the engine compartment, disconnect the wire harness from the motor by pushing down on the tab while pulling the connection off at the motor.
  3. Remove the air cleaner or air inlet duct, as necessary.
  4. If necessary, remove the solenoid box cover retaining bolts and the solenoid box cover.
  5. Disconnect the blower motor cooling tube from the blower motor.
  6. Remove the blower motor mounting plate attaching screws and remove the motor and wheel assembly from the evaporator assembly blower motor housing.
  7. Remove the blower motor hub clamp from the motor shaft and pull the blower wheel from the shaft.
To install:
  1. Install the blower motor wheel on the blower motor shaft and install a new hub clamp.
  2. Install a new motor mounting seal on the blower housing before installing the blower motor.
  3. Position the blower motor and wheel assembly in the blower housing and install the attaching screws.
  4. Connect the blower motor cooling tube.
  5. Connect the electrical wire harness hard shell connector to the blower motor by pushing into place.
  6. If removed, position the solenoid box cover into place and install the 2 retaining screws.
  7. Install the air cleaner or air inlet duct, as necessary.
  8. Connect the negative battery cable and check the blower motor in all speeds for proper operation.

Hope this help (remember comment and rated this).

Apr 23, 2010 | 1996 Ford Explorer

1 Answer

The blower for the air condition & defrost is not working


You'll need to check all fuses under dash as well as under hood in fuse/relay box, as one may be blown. Then get back to us if you check them all & are good but still have problem.

Aug 24, 2009 | 1999 Jeep Grand Cherokee

1 Answer

My a/c will not blow out air. You can feel the


Sounds like a blower motor not turning the blower. Could be elecrical. Check fuses that control the blower motor or blower motor relay. If these seem to be okay, locate the blower motor relay and try replacing it with a known working relay of the same style. If the A/C begins to blow, then you need a new relay. If not, you'll be looking into the blower motor or fan. Make sure your cooling fans function while your A/C is engaged.

Jul 03, 2009 | 2002 Buick LeSabre

1 Answer

My air conditioner is not working on my 2002 BMW X-5. The air is cool it just won't blow out.


If there is air moving through the vents most likely the final stage transistor(blower resistor) has failed. It controls blower speed from a signal from the ihka (a/c control panel). the final stage receives the signal from the ihka of the drivers preference blower speed. the final stage pwm (pulse width modulates) the blower motor. which means it turns it off and on very quickly to speed up or slow down the blower motor speed. It isn't the easiest part to replace. Usually at a dealership i would expect to pay somewhere around $600 (including diagnosis)but don't hold me to it. bmw dealerships stand behind their repairs and usually include a warranty with the part of 2 years unlimited mileage.

May 07, 2009 | 2002 BMW 5 Series

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