Help please interior blower not working and nore is replacement

[Petrol_head2000]

Hi there

Hope many someone can help me

My interior blower fan stoped working so I removed it and tested the live feed and there is a live, connected the fan direct to battery and fan spins fine, connceted the fan back to Car and fan span for a brief while then stoped so thought the fan was faulty so ordered a new fan unit and connected the new fan and nothing... not working atall. All fuses seem to be fine is there any relays hidden away that I can check? I wondered if maby the signal is disrupted somehow?

Thanks in advance

 

[Sandra]

May be a good idea to scan with vcds see if there are any faults.

 

[SootySport]

Fan resistor cream crackered?

 

[Petrol_head2000]

May be a good idea to scan with vcds see if there are any faults.

Thanks I have scanned and it's showing no faults?

 

[Petrol_head2000]

Fan resistor cream crackered?

Is the resistor the piece attached to the fan with the heat sink on it? If so I have had the original tested and it's fine and the new fan assembley came with a new one

 

[mechanic69]

Have you tested that the climate control is sending a signal to the fan unit. There is a small wire in the connector to the fan that changes voltage as you increase the fan speed on the climate control. Use a multimeter. Mine had the same issue but I just replaced the controller on the fan, the bit with the heat sink


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[Petrol_head2000]

Have you tested that the climate control is sending a signal to the fan unit. There is a small wire in the connector to the fan that changes voltage as you increase the fan speed on the climate control. Use a multimeter. Mine had the same issue but I just replaced the controller on the fan, the bit with the heat sink


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Thanks I have not check to see if voltage is detected in the signal wires so I will check this

 

[Petrol_head2000]

I have checked the smaller wires and the black one ranges from 2 volts up to around 8 when the fan speed is increased on the climate unit dose this seem right?

 

[mechanic69]

Yeah if it goes up and there's power too you have the right signals to the fan controller. It must be the controller on the fan unit


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[Petrol_head2000]

Ha Han it's driving me mad as I have had the old controller tested and it's fine but not working and I brought a new fan unit and controller and that is also not working, the only wire not getting a live is the big brown one that I assume is the earth going to have to admit defeat and take it go the garage, I can only get the fans to work with a 12v if I unplug it from the control unit and connect the live and neutral to the small fan connector that fits into the controller I cannot get them to work when I try and connect a love and neutral to the control unit with the fan connected to the control unit if that makes sense


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[Petrol_head2000]

Ha Ha it's driving me mad as I have had the old controller tested and it's fine but not working and I brought a new fan unit and controller and that is also not working, the only wire not getting a live is the big brown one that I assume is the earth going to have to admit defeat and take it go the garage, I can only get the fans to work with a 12v if I unplug it from the control unit and connect the live and neutral to the small fan connector that fits into the controller I cannot get them to work when I try and connect a live and neutral to the control unit with the fan connected to the control unit if that makes sense

 

[Chillout]

Disconnect and reconnect the battery,was it a vcds scan you hado done ?

 

[Petrol_head2000]

Disconnect and reconnect the battery,was it a vcds scan you hado done ?

The garage have had the car and scanned etc no faults and they can only get a live to the fan for abut 3 seconds then nothing they replaced a part they thought could be the problem but did not fix and they don't want to touch it any further. Would replacing the climate control unit fix it? Is there a resistor/ controlor for the fan inside the unit?