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Blower motor stopped working.

nav922

New member
Location
Yorkshire
Car(s)
MK5 GTI 2007
Morning.
Can anyone shed some light?

Heater blower motor randomly stopped working.
Put 12v to the fan and it spins.
Bought a replacement fan with a new resistor module
Tried different climate control module
Checked all wiring from fan to climate control module to fuse box. All is good and getting 12v.
Checked fuses and relays

2007 GTI
 

GTI's

Drag Race Newbie
Location
MD
You checked these fuses in the dash fuse panel

SC/F22 V2 blower motor
SC/F4
SC/F14
 

nav922

New member
Location
Yorkshire
Car(s)
MK5 GTI 2007
C786AA3E-B809-48B7-80F1-EC64124F49B1.jpeg

I’ve checked these fuses and they are all good
 

GTI's

Drag Race Newbie
Location
MD
Is the motor seeing ground at the plug? Do you have access to a scan tool that can scan the Hvac?
 

nav922

New member
Location
Yorkshire
Car(s)
MK5 GTI 2007
Yeah that’s all good. 12v and ground is good. Got it scanned and was showing - 01273 fresh air blower
But the blower does work
 

nav922

New member
Location
Yorkshire
Car(s)
MK5 GTI 2007
Yes I’m getting 12v. It doesn’t make sense. Iv tried a new blower motor and new resistor modules. Also blowers work connected to 12v direct
 

nav922

New member
Location
Yorkshire
Car(s)
MK5 GTI 2007
I believe it’s 2006 but was manufactured 2007 according to my logbook.
Is there anyway of testing the fan control module? Iv tried 3 different ones lol, surely they can’t all be bad
 

GTI's

Drag Race Newbie
Location
MD
If you have a scan tool like Vcds you can look at Hvac module 08 and go to MB(measuring blocks) 007 field 1-4 with 4 being terminal 30 voltage and MB 008 field 1 being term 15 voltage.
 

nav922

New member
Location
Yorkshire
Car(s)
MK5 GTI 2007
I had a mess around last night again.
I noticed without the resistor module plugged in, we are getting 12v from connector. As soon as everything is plugged back in together it drops down to 1V ? Does this mean that fan control module is bad even though Iv tried 2 different ones
 

GTI's

Drag Race Newbie
Location
MD
At what location are you looking at voltage and seeing it drop from 12 to 1, at the 6 pin plug red/white wire?
 
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