Blower motor wire harness

It may either be a broken blend door (can cost you around $400 to fix)
Or it needs a reverse flush done on the heater core, If your passenger side floor is wet or has water stains then the heater core needs to be replaced (maybe $600)

Possible plugged heater core, low on coolant, broken control cable. Could you be more spacific?

u need a new blower motor, just replace mines last winter

Check this procedure...Blower Motor Resistor and Controller Replacement


REMOVAL

1. Disconnect and isolate the batten' negative cable.

2. Depress locking tab and unplug the wire harness connector from the blower motor

resistor or controller (power module).

3. Depress locking tab and unplug the resistor or controller connector from the blower

motor.

4. Remove the 2 screws that secure the blower motor resistor or controller to the

heater-AC housing.

5. Remove the blower motor resistor or controller from the heater AC housing.


INSTALLATION

1. Install the blower motor resistor or controller to the heater AC housing. The

housing is indexed to allow (controller power module) mounting in only one

position. Tighten the mounting screws to 2.2 Nm(20 in. Lbs.).

2. Plug in the wire harness connector to the blower motor resistor or controller.

3. Plug in the connector from the blower motor resistor or controller to the blower

motor.

4. Connect the batten' negative cable.




Hope this helps (rerember to rating this and leave a testiomonial).

LX? DX? EX? Hatchback? sedan? wagon?coupe? engine size? did you check the fuse? Fuse #19, 30 amps in the auxilary fuse box (your owners manual may show the location ,it may be near the blower ?). The Blue/White wire at the heater blower motor should be HOT (12v) with key on. If you ground the Blue/Black wire the motor should run full speed.

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Blower Motor Resistor and Controller Replacement

Image Blower Motor Resistor Or Controller/Power Module Remove/Install

REMOVAL

1. Disconnect and isolate the batten' negative cable.

2. Depress locking tab and unplug the wire harness connector from the blower motor

resistor or controller (power module).

3. Depress locking tab and unplug the resistor or controller connector from the blower

motor.

4. Remove the 2 screws that secure the blower motor resistor or controller to the

heater-AC housing.

5. Remove the blower motor resistor or controller from the heater AC housing.

INSTALLATION

1. Install the blower motor resistor or controller to the heater AC housing. The

housing is indexed to allow (controller power module) mounting in only one

position. Tighten the mounting screws to 2.2 Nm(20 in. Lbs.).

2. Plug in the wire harness connector to the blower motor resistor or controller.

3. Plug in the connector from the blower motor resistor or controller to the blower

motor.

4. Connect the batten' negative cable.

Thank you for using FixYa.com

Regards, Lee Davidian

Hope this helps....please don't forget to rate...thank you:

Removal & Installation

1. Before servicing the vehicle, refer to the Precautions section.
   
2. Disconnect battery negative cable from battery and properly isolate to prevent accidental reconnection.
   
3. Disengage the wire harness connectors from the retainer.
   
4. Disconnect the blower motor electrical connector.
   
5. Remove the motor cooling hose.
   
6. Remove the screws and remove the blower motor.
   
   NOTE

   Prior to removing a wheel that is to be reused, clean any corrosion from the blower motor shaft to prevent damage to the wheel mounting shaft.
   
   

7. Remove the wheel from the blower motor as follows:
   
   • Remove the push clip.
     
   • Remove the wheel from the blower motor.
     

Blower motor cooling hose

Blower motor mounting plate

To install:

1. Install or connect the following:
   
   • Wheel to the blower motor, if removed.
     
   • Blower motor and securely tighten the screws.
     
   • Motor cooling hose
     
   • Blower motor electrical connector
     
   • Wire harness retainers
     

Although vehicle electronics is not my strongest suit, I will tell you about the problems this year has had with HVAC components: The resister is a known problem which can heat up and melt wires and cause problems and "back feed" current into joining harnesses and melt and fuse them together causing you your grief. It should in all honesty, blow fuses when it does this but I did not encounter this when my hvac system was bad. Sometimes, the heater blower motor gets old and draws too much current as well and allows current to back feed into joined harnesses as well. Replace the black relay on the passenger side under the glove box with a high quality one. Check your resister,and blower fan for appropriate current and grounding. If you are having other related issues with your heater blower speed your selector switch may be bad too. Remove the cowling panel and pull the hvac module out of the dash (like a stereo) check for melted wires,plugs and harnesses. Run your fingers along the wiring and check for melted fused spots. Are you blowing fuses? This is your starting point. Let me know once you get this done and tell me what you have found. Take care and let me know how it goes.

Unless you live in the desert, crimp connectors should NEVER BE USED, except for emergency temporary repair aid. Use either repair harness end or get a harness section from a junkyard. make sure you connect wires properly and use proper sized heat shrink tubing to cover soldered joints.. To replace blower motor, locate it and remove it. If complicated by location, spring for $20. and get a manual (which will help you many more times with other stuff as well!!!)

there is no relay for the heater fan it's a 15 amp fuse and is on the accessories circuit. the reostat is responsible for all 3 speeds .with the key off there should be no voltage to the blower motor whether the fans speed fan switch is on or off. the fuse will be located in the fuse paneleither on the drivers left side in the dash or underneath the dash in the fuse block. you have a short in the harness that is under the dash and most likely it's a bad plug on the harness. your going to have to do some searching but that's where the problem short is... please rate