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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKV-A5 Golf/Jettas

VW MKV-A5 Golf/Jettas Discussions area for A5/MkV Jetta/Golf (2005/2006 PD and 2009 CR).

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Old February 9th, 2011, 19:41   #1
xxcsu
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Join Date: Sep 2008
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Lightbulb Blower motor in 2006 Jetta stopped working

Anyone know where is the relay located ? part number maybe
I dont think the problem is with the resistor pack ,the fan not working on any speed...all fuse is ok... any idea ?
Thank You!
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Old February 10th, 2011, 11:44   #2
Ol'Rattler
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No relays. Fan is CanBus (computer) controlled.

Step one would be to check fuses. There are HVAC fuses at multiple locations. (Bentleys)

Something I have done on older cars is to access the blower, turn the ignition and fan to on and spin the blower with a pencil. if the blower is shot it will sometimes work this way enough to tell you it is getting power.

While you are at the motor, undue the connector, turn the ignition and blower switch on and check for voltage.

After that it is time to hook up a VCDS and pull DTCs.

If you have to replace the blower or the resistor pack, I would replace both.
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2006 Jetta TDI
5 speed, Manufactured 06/06
DC stage 1 SMF Clutch
Draw-Tite hitch
Dash Tray
Blue tint aspherical mirrors
Euro Cupholder
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VCDS Hacks: DRL Disabled-Seatbelt Chime Disabled-Key fob Power Windows
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Old February 10th, 2011, 12:41   #3
xxcsu
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I just checked with ross-tech vcds, i got 1 fault code:

Thursday,10,February,2011,15:40:43:21084
VCDS Version: Release 10.6.3
Address 08: Auto HVAC Labels: 1K0-907-044.lbl
Control Module Part Number: 1K0 907 044 BE
Component and/or Version: ClimatronicPQ35 090 0808
Software Coding:
Work Shop Code: WSC 00000 000 00000
VCID: 6BDE0BA93303
1 Fault Found:
01273 - Fresh Air Blower (V2)
014 - Defective - Intermittent
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Old February 10th, 2011, 13:57   #4
xxcsu
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connected the blower motor directly to 12v , and then its working fine , blowing air , like crazy... checked all fuse... everythink looks ok... have to be a relay somewhere.. my ac not kicking out , when i set the temp to low... Maybe ac relay ? Any idea ? i checked the enginn area on the driver side , i found only one relay (part no: 7M0 951 253A) , under a black cover with some fuse's... Where is the ac relay located ?
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Old February 11th, 2011, 11:00   #5
Ol'Rattler
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Per Bentley's there is no relay for A/C.

Just checked my car, and with the engine running, if you have the fan on any position except fan speed 0, and turn on the A/C, the A/C comes on. If you turn the fan to 0, the A/C light goes off. If the controller never sees anything except 0, the A/C will not even turn on the A/C light.

Given that you can make the fan work by jumping it directly, I would assume that the blower and resistor pack are not the problem.

For what ever reason, the CanBus "on"command from the switch is not seen by the controller. It would explain why the A/C doesn't work either. That one could be a bad switch or wiring. The other less likely senario could be that the fan is commanded on but there is a wiring or fuse issue between the fan and the controller.

Something to try with VCDS is something called a readiness test and also I have seen references to guided fault finding, or something like that. When I get a chance, I will fire up my CD version of Bentleys and study a little closer.

Do you have Climatic or Climatronic? What is your build date?
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2006 Jetta TDI
5 speed, Manufactured 06/06
DC stage 1 SMF Clutch
Draw-Tite hitch
Dash Tray
Blue tint aspherical mirrors
Euro Cupholder
Euro Light Switch
2nd grocery hook
VCDS Hacks: DRL Disabled-Seatbelt Chime Disabled-Key fob Power Windows
Adjusted Cam to Crank Timing

Last edited by Ol'Rattler; February 11th, 2011 at 11:07.
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Old February 11th, 2011, 21:33   #6
Ol'Rattler
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Just looked at the CD Bentleys and from the DTC you pulled you probably have Climatronic.

If that is correct, putting 12V directly to the motor was a bad idea. You may have blown out the J126 Blower motor controller that is integral with the blower motor.

Something about these CanBus cars is you never should put power straight to something unless you know EXACTLY what that power is doing. 12V on the CanBus, for example, can brick some expensive components very quickly.

I did find some Guided Fault Finding stuff on the Bentleys CD that may help to pinpoint exactly were the problem is....................
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2006 Jetta TDI
5 speed, Manufactured 06/06
DC stage 1 SMF Clutch
Draw-Tite hitch
Dash Tray
Blue tint aspherical mirrors
Euro Cupholder
Euro Light Switch
2nd grocery hook
VCDS Hacks: DRL Disabled-Seatbelt Chime Disabled-Key fob Power Windows
Adjusted Cam to Crank Timing

Last edited by Ol'Rattler; February 11th, 2011 at 21:41.
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Old February 12th, 2011, 10:17   #7
xxcsu
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YEAH ! Its working Again !!! No problem at all
There is what i've done :
  1. - Checked all fuse - all ok
  2. - Pulled a code with VCDS : 01273 - Fresh Air Blower (V2) Deffective
  3. - Disconnected the battery - Straight 12v to blower motor - result : motor working
  4. - Left the blower motor disconected , reconnected the battery , run VCDS again , i got a different code , i can not recall exactly what was that , but something like : 01273 - Fresh Air Blower (V2) Failure
  5. - Then i cleared the codes with VCDS
  6. - Disconnected and reconnected the battery
  7. - Reconnected the blower power wires
  8. - Started the engine , and turned on my CLIMATRONIC , blower started blowing air!!!
  9. - Run VCDS again , no more Fault Codes
Also... there is a few relay is in our TDI They are located below the instrument cluster on the driver side ,above the on board power supply control module... and there is a relay carrier of on board power supply control module , on the left under the instrument cluster !


Ol'Rattler ! Thank You for the information ...
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Old February 12th, 2011, 12:23   #8
Ol'Rattler
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Great you got it going again. The car does have relays, just none for the HVAC. Does the A/C work now?

I have heard of folks with controller issues disconnecting the battery cables and touching them together to fix a problem. Sounds like your fix kinda did the same thing.

Thanks for the opportunity to further my limited troubleshooting skills a bit.
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2006 Jetta TDI
5 speed, Manufactured 06/06
DC stage 1 SMF Clutch
Draw-Tite hitch
Dash Tray
Blue tint aspherical mirrors
Euro Cupholder
Euro Light Switch
2nd grocery hook
VCDS Hacks: DRL Disabled-Seatbelt Chime Disabled-Key fob Power Windows
Adjusted Cam to Crank Timing
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Old February 13th, 2011, 06:42   #9
Crosley
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I bought my 2006 Jetta in Sept 2005... in December 2005 the blower fan stopped working.

The dealer replaced an item they called a relay that took 4 days to come into AZ

1KO-951-253-A RELAY

Listed RELAY as # 75X tested faulty
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Old February 14th, 2011, 11:45   #10
Ol'Rattler
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Quote:
Originally Posted by Crosley View Post
I bought my 2006 Jetta in Sept 2005... in December 2005 the blower fan stopped working.

The dealer replaced an item they called a relay that took 4 days to come into AZ

1KO-951-253-A RELAY

Listed RELAY as # 75X tested faulty
When I was in Bentleys, I did see reference to a terminal 15 and a terminal 30 relay. Do you know what your replacement relay actually controls? With XXCSUs problem I kinda ruled out relays because I couldn't quite follow the current flow through any particular relay to the end user. XXCSUs question about relays I didn't really answer very well................
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2006 Jetta TDI
5 speed, Manufactured 06/06
DC stage 1 SMF Clutch
Draw-Tite hitch
Dash Tray
Blue tint aspherical mirrors
Euro Cupholder
Euro Light Switch
2nd grocery hook
VCDS Hacks: DRL Disabled-Seatbelt Chime Disabled-Key fob Power Windows
Adjusted Cam to Crank Timing
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