Question about 2000 Mercedes-Benz S-Class

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Blower motor don`t come on in the front no power going to it but panel control showing it

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Check blower fuse and blower resistor.

Posted on Oct 01, 2009

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First thing, check to make sure the fuse is still good.

Posted on Oct 01, 2009

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1 Answer

Does anyone have any suggestions regarding how to diagnose no power to front blower motor in a 2006 Ford Freestar mini van.


You also have the front blower motor speed controller and the electronic automatic temperature control (EATC) module to check.

Nov 10, 2016 | 2006 Ford Freestar

2 Answers

Why does blower on A/C sometimes work and sometimes don't on my Saturn 2007 aura


Blower motor control processor would be a good guess but I'm not in the guessing business , you need to test power an grounds for lose connections or corrosion , check for DTC'S in the HVAC control panel an if none , there are three different diagnostic flow charts from Saturn service info .
Blower Motor Always On Blower Motor Inoperative Blower Motor Malfunction
Myself I'd say Blower motor malfunction flow chart !

1

Did you perform the Diagnostic System Check - Vehicle?
--
Go to Step 2
Go to Diagnostic System Check - Vehicle

2

Place the blower motor switch in each speed position.
Does the blower motor operate at the desired speeds?
yes / no
Go to Testing for Intermittent Conditions and Poor Connections
Go to Step 3

3

  1. Disconnect the harness connector of the blower motor control processor.
  2. Measure the voltage between the battery positive voltage circuit and the ground circuit of the blower motor control processor.
Does the voltage measure within the specified range?
10-14 V yes / no
Go to Step 4
Go to Step 6

4

  1. Connect the blower motor control processor.
  2. Disconnect the harness connector of the HVAC control module.
  3. Measure the voltage on the blower motor speed control circuit.
Does the voltage measure within the specified range?
4.5-5.5 V
Go to Step 7
Go to Step 5

5

Test the control circuit of the blower motor control processor for a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
--
Go to Step 12
Go to Step 7

6

Test the battery positive voltage circuit of the blower motor control processor for a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
--
Go to Step 12
Go to Step 9

7

Inspect for poor connections at the harness connector of the blower motor control processor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
--
Go to Step 12
Go to Step 10

8

Inspect for poor connections at the harness connector of the HVAC control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
--
Go to Step 12
Go to Step 11

9

Repair a high resistance in the ground circuit of the blower motor control processor. Refer to Circuit Testing .
Did you complete the repair?
--
Go to Step 12
--

10

Replace the blower motor control processor. Refer to Blower Motor Control Processor Replacement .
Did you complete the replacement?
--
Go to Step 12
--

11

Replace the HVAC control module. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
--
Go to Step 12
--

12

Operate the system in order to verify the repair.
Did you correct the condition?
--
System OK
Go to Step 2
Good luck , hope this helps !

Jul 11, 2015 | 2007 Saturn Aura XR Sedan

1 Answer

Town country climate control


It's the fan resistor that's bad. It's about $20 and 20 minutes to fix (maybe bit longer to get all of the trim off then back on) ask parts house to show you where it is located.

May 27, 2013 | Cars & Trucks

2 Answers

I need to replace a blower motor on a 1998 GMC Sierra 2500 6.5L diesel. Could you tell me how to go about it, how much of the dash do I have to remove? Thanks


To Remove:
  1. Disconnect the negative battery cable.
  2. Remove the glove compartment from the instrument panel.
  3. Remove the front screw from the right door sill plate.
  4. Remove the right kick panel trim.
  5. Disconnect the electrical connectors from the powertrain control module (PCM), as needed. Remove the PCM and mounting bracket if equipped with a diesel engine.
  6. Disconnect the electrical connector from the blower motor.
  7. Remove the bolt from the right lower instrument panel support.
  8. Remove the blower motor cover.
  9. Remove the blower motor cooling tube.
  10. Remove the blower motor mounting flange screws.
  11. Carefully pull the blower motor forward in order to avoid distorting the fan and pry back on the right side of the instrument panel to as necessary to remove the blower motor.
To Install:
  1. Guide the blower motor assembly into position. Avoid catching the blower fan on any protruding parts.
  2. Install the blower motor mounting screws.
  3. Install the blower motor cooling tube and blower motor cover.
  4. Install the bolt in the right lower instrument panel support.
  5. Connect the electrical connectors, as necessary.
  6. Install the mounting bracket and the powertrain control module (PCM) if removed.
  7. Connect the electrical connectors to the PCM, as necessary.
  8. Install the right kick panel trim.
  9. Install the screw into the front door sill plate.
  10. Install the glove box in the instrument panel.
  11. Connect the negative battery cable.
  12. Check the operation of the blower motor.

Feb 03, 2011 | GMC Sierra 2500 Cars & Trucks

1 Answer

The climate control system only has the high fan speed. Is this likely to be the panel control switch?


May be but next to the blower motor is the blower control module this has a series of resistors in it to change the current flow to the blower motor ,.When you call for high speed on the fan it bypasse's the resistor module, on all other speeds it runs through the resistor. so check for power going into the blower module from the control panel on some speed other than high if power is at the module control panel is ok. if not blower module is bad

Oct 23, 2010 | 1999 Pontiac Grand Am GT

1 Answer

Heater fan on 2002 Yukon does not operate in front, only rear.


The front blower motor is controlled by the blower resistor module.This is usually the problem with the front blower not working.I looked up the schecmatics and I don`t see separate fuses for the front and rear.But the fuse for the front blower is in the under hood fuse block.If this is good then The problem is probably the resistor module.It is next to the blower motor.The connector from the resistor connects to the blower motor.If you want to confirm this you can check for power and ground at the blower motor connector when you activating the blower switch on.This can be done with a test light.Make sure you have power going into the resistor module also.If you have power going in and no power at the blower motor then replace the resistor.Hope this helps.Good luck.

Dec 28, 2009 | 2002 GMC Sierra C/K1500

2 Answers

94 eldorado blower quit


This Sounds Like the Blower MOTOR Itself has Failed, But There Is a Relay Located...
LH Electronics Bay Board (behind Panel) (2 Door)...........Also one other Part is The Resistor.......
FRONT BLOWER MOTOR RESISTOR
This vehicle does not use a Front Blower Motor Resistor. The Front Blower Motor speed is regulated by the Front Blower Motor Speed Control which is incorporated into the Front Blower Motor and is not serviced separately.

Aug 19, 2009 | 1994 Cadillac Eldorado

1 Answer

Yes i have juice to the blower motor, but it dont blow all fuses are good, freon is good


Cadillac 1999 DeVille
If the front blower motor is not running with battery level power to it, you may have bad blower resistors which controls the speed of the motor.. Unfortunately the resistors are built-in the motor. You may have to replace the motor. If you remove the motor, you can recheck it by direct wiring power to it. OR you may have loose wires.
Also check the Heater and A/C Programmer module.

Here's some info I found from another posting.

Red is positive 12 volts coming from fuse of circuit breaker. The black wire is either the ground or the main hot wire going to the blower motor (3 pin connection only), and the gray wire (if is is small in size) is a variable voltage coming from the body control module requesting speed for the blower motor.The blower control module varies voltage on the main wire going to the blower motor, supposedly in accordance with the requested voltage from the body control module. Usually if all fuses are okay and present on the apprpriate wire of the blower control module, the a blower motor that will not run or stays running after the key is turned off is the fault of the blower control module. If the blower control module has failed the the cause must be determined (over amping blower motor) or else new blower control module may fail when powered up.Usually blower control modules have more than three wires. Usual connections are: B+ (battery voltage) GND (chassis or engine ground), two large wires going directly to blower motor (can be any color, but are usually 10 guage in size), and an optional wire that reports voltage level back to the body control module.

Jun 24, 2009 | 1999 Cadillac DeVille

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