Hi everyone. Long time no chat.
So before I get started.... here's my autoscan:
Short back story:
I just completed two major repairs:
1)Steering lock replacement (complete disassembly of steering column) I'm mentioning this one because it's the only place I worked inside the car?????
2)Drivers wheel bearing replacement. (I think I blew something up during this process)
What does the HVAC have to do with the wheel bearing you ask? ME - a DIY amateur who breaks as much as he fixes. So basically, I was wrestling getting the CV shaft out of the old hub assembly, and into the new one. I was repeatedly turning the steering wheel left and right trying to find a good position to get the shaft slip in (That's what she said). This went on for some time. During this I had to have the key in the run position to allow the wheel free movement without the steering lock engaging. The battery was starting t run down - ******** so I pulled the negative battery cable**************. When I was finished the wheel bearing install and put everything back together, I proceeded to reattach the negative cable. BUT I DIDNT TURN THE IGNITION OFF FIRST!!!! So you can imagine the the sparks at the battery post during this process as current started pouring in to the vehicles systems again.
Well I pulled the key out, crossed myself, reinserted the key and started the vehicle. All is good! I consider myself lucky at this point. Take it for a quick test drive. Call it a night.
Next day wife takes the car and says I broke the heater.
THE PROBLEM
The Blower wont blow. It doesn't even attempt to spin. There might be a slight single twitch if I hold it in my hand and turn on the blower with the climate control but that could be my imagination.
So, this brings me to today. As best I can tell, all functions work with the climate control module -MAYBE
My testing: basic output test in VCDS for the BLOWER MOTOR yields nothing.
I removed the blower unit from under the dash. I have removed the Fan resistor from the unit. I left the climate controller/power connector from vehicle plugged in to resistor and measured the open circuit voltage on the 2 pins for the fan motor connector on the resistor. I have 14.4 volts on these pins when the engine is running. If I plug the fan back in, NOTHING from the fan. The fan is difficult to spin with my hand. It doesn't spin freely if I give it a good twist and let go.
Off the cuff Id guess I nuked the fan. Fine, whatever, Ill take it. It's 35 buck for a new Denso unit on fleabay.
BUT!!
Here's where I'm confused. Fan doesn't spin when plugged into resistor even though voltage present on fan connector pins. If I wire the fan directly to a car battery with some jumper wire..... IT SPINS!!!! So WTF?
I get the ERROR 01273 - Fresh Air Blower (V2) whether or not the fan motor is plugged into the resistor. I also get Open Circuit or Short to Positive (code not in this autoscan but is usually there) whether or not the the fan motor is plugged into the resistor
Other stranger behavior????????? If I measure the open circuit voltage on the fan motor pins of the resistor, the readings don't change regardless of the fan setting on the climate control. If I had set the fan to half speed, shouldn't there be a change in the voltage output at the fan connector to reduce the fan motor speed????
So, I think it's the fan? but then it works on the work bench hard wired to battery. So why doesn't it spins if there voltage on the pins on the resistor? Is the resistor actually borked and not allowing enough current to pass to the motor?
Resistor in question : 3C0 907 521 B
Blower in question : 1K1 820 015 F
So before I get started.... here's my autoscan:
Code:
Saturday,15,February,2020,15:39:14:09709
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 19.6.2.2 (x64)
Data version: 20200210 DS308.0
www.Ross-Tech.com
VIN: WAUHF68P98A125197 License Plate:
Mileage: 312810km-194371mi Repair Order:
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Chassis Type: 8P (1K0)
Scan: 01 03 08 09 0F 15 16 17 19 25 42 44 46 52 55 56 62 72 77
VIN: WAUHF68P98A125197 Mileage: 312810km-194371miles
01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
0F-Digital Radio -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine Labels:. 06F-907-115-AXX.clb
Part No SW: 8P0 907 115 P HW: 8P0 907 115 B
Component: 2.0l R4/4V TFSI 0010
Revision: 5BH16--- Serial number: AUX7Z0GDFNB0G4
Coding: 0103010A18070160
Shop #: WSC 65728 1018 854933
VCID: 3FA3B5B36E5851B79C-806A
No fault code found.
Readiness: 0110 0101
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1K0-907-379-MK60-F.lbl
Part No SW: 1K0 907 379 AC HW: 1K0 907 379 AC
Component: ESP FRONT MK60 0101
Revision: 00H11001
Coding: 0021122
Shop #: WSC 06314 000 00000
VCID: 73CB29831290C5D7A8-8026
No fault code found.
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8P0-820-043.lbl
Part No SW: 8P0 820 043 AH HW: 8P0 820 043 AH
Component: KlimavollautomatH19 0430
Revision: 122007 Serial number: 8P0820043AH
Shop #: WSC 00000 000 00000
VCID: 72C52C876D8ACCDFA3-8026
2 Faults Found:
01273 - Fresh Air Blower (V2)
003 - Mechanical Failure
Freeze Frame:
Fault Status: 01100011
Fault Priority: 3
Fault Frequency: 1
Reset counter: 213
Mileage: 312811 km
Time Indication: 0
Date: 2020.01.21
Time: 15:29:31
Freeze Frame:
Temperature: -50.0°C
Speed: 0.0 km/h
(no units): 139.0
(no units): 248.0
01487 - System Function Test
001 - Upper Limit Exceeded
Freeze Frame:
Fault Status: 01100001
Fault Priority: 3
Fault Frequency: 1
Reset counter: 253
Mileage: 62392 km
Time Indication: 0
Date: 2011.05.31
Time: 11:30:31
Freeze Frame:
-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels:. 8P0-907-279-30-H.lbl
Part No SW: 8P0 907 279 K HW: 8P0 907 279 K
Component: Bordnetz-SG H54 2501
Revision: 00H54000 Serial number: 00000007987463
Coding: E98C1F81D0141000CF1818001800000000194E175A150202000000000000
Shop #: WSC 12345 444 54321
VCID: 45AFA75B0C840B67D6-8010
Subsystem 1 - Part No: 8P1 955 119 E Labels: 1KX-955-119.CLB
Component: Wischer AU350 H01 0130
Coding: 00062736
Shop #: WSC 12345
Subsystem 2 - Part No: 4E0 910 557 B Labels: 8K0-955-559.CLB
Component: REGENLICHTSENSORH13 0100
Coding: 00150573
Shop #: WSC 12345
No fault code found.
-------------------------------------------------------------------------------
Address 0F: Digital Radio Labels: 8E0-035-593-SIR.lbl
Part No SW: 8E0 035 593 H HW: 8E0 035 593 H
Component: SDAR SIRIUS H06 0080
Revision: 00000000 Serial number: AUZ4Z7F0033365
Shop #: WSC 00000 000 00000
VCID: 2E7DF8F7B932A83F07-807A
1 Fault Found:
02635 - Tuner Not Enabled/Activated
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 213
Mileage: 312811 km
Time Indication: 0
Date: 2020.01.21
Time: 15:26:00
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8P0-959-655-94.lbl
Part No SW: 8P0 959 655 M HW: 8P0 959 655 M
Component: Airbag 9.41 H01 4210
Revision: 91H01421 Serial number: 003CQ0002134
Coding: 0030605
Shop #: WSC 06314 000 00000
VCID: 4CB9927F2FEEFA2F09-8018
Subsystem 1 - Serial number: 6332DRB4067E4723Q
Subsystem 2 - Serial number: 6342DRB4067DD397%
Subsystem 3 - Serial number: 63528RB403463D3FR
Subsystem 4 - Serial number: 63628RB40329781DO
Subsystem 5 - Serial number: 63747RB403290827E
Subsystem 6 - Serial number: 63847RB403290D66N
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8P0-953-549-F.lbl
Part No SW: 8P0 953 549 F HW: 8P0 953 549 F
Component: J0527 H36 0070
Coding: 0004042
Shop #: WSC 06314 000 00000
VCID: 41A7B34B18AC2747EA-8014
Subsystem 1 - Part No: XXXXXXXXXXX
Component: E0221 H02 0030
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8P0-920-xxx-17-MY8.clb
Part No SW: 8P0 920 931 J HW: 8P0 920 931 J
Component: KOMBIINSTR. VDO H22 0660
Revision: D0H22003 Serial number: 224DG003101725
Coding: 0036378
Shop #: WSC 12345 444 54321
VCID: 3A55C4A7757A749FAB-806E
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels:. 1K0-907-530-V3.clb
Part No SW: 1K0 907 530 L HW: 1K0 907 951
Component: J533__Gateway H15 0180
Revision: H15 Serial number: 1400K07C050F97
Coding: E9817F060007020102
Shop #: WSC 12345 444 54321
VCID: 3041E68FA306BECF15-8064
No fault code found.
-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 1K0-920-xxx-25.clb
Part No SW: 8P0 920 931 J HW: 8P0 920 931 J
Component: KOMBIINSTR. VDO H22 0660
Revision: D0H22003 Serial number: AUX7Z0GDFNB0G4
Shop #: WSC 00000 000 00000
VCID: 3A55C4A7757A749FAB-806E
No fault code found.
-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 8P0-959-801-MIN3.lbl
Part No SW: 8P0 959 801 K HW: 8P0 959 801 K
Component: Tuer-SG H03 0050
Coding: 0001209
Shop #: WSC 06314 000 00000
VCID: 43ABB94302B03557F8-8016
1 Fault Found:
00928 - Locking Module for Central Locking; Front Driver Side (F220)
008 - Implausible Signal
-------------------------------------------------------------------------------
Address 44: Steering Assist Labels: 1Kx-909-144-G2V3.clb
Part No: 1K1 909 144 M
Component: EPS_ZFLS Kl.079 H08 1901
Shop #: WSC 02069 000 90108
VCID: 354FD79B5C649BE746-8060
No fault code found.
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 8P0-959-433.lbl
Part No: 8P0 959 433 K
Component: KSG H11 0080
Coding: 1B8022A0014036240F0FCC0F0477
Shop #: WSC 12345 444 54321
VCID: 44A9BA5F07BE326FC1-8010
Subsystem 1 - Part No: 1K0 951 605 C
Component: LIN BACKUP HORN H03 1301
Subsystem 2 - Component: NGS n.mounted
Subsystem 3 - Component: IRUE n.mounted
1 Fault Found:
01403 - Glass-Break Sensors; Rear
011 - Open Circuit
-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels:. 1K0-959-702-MIN3.clb
Part No SW: 8P0 959 802 K HW: 8P0 959 802 K
Component: Tuer-SG H03 0050
Coding: 0001209
Shop #: WSC 06314 000 00000
VCID: 44A9BA5F07BE326FC1-8010
No fault code found.
-------------------------------------------------------------------------------
Address 55: Headlight Range Labels: 4F0-910-357.lbl
Part No SW: 4F0 910 357 F HW: 4F0 907 357 F
Component: AFS 1 H01 0020
Revision: 00000001 Serial number:
Coding: 0000020
Shop #: WSC 06314 000 00000
VCID: 29770BEB80DCCF07D2-807C
Subsystem 1 - Part No: 8E0 941 329 A
Component: AFS-Modul links H05 0030
Subsystem 2 - Part No: 8E0 941 329 A
Component: AFS-Modul rechtsH05 0030
No fault code found.
-------------------------------------------------------------------------------
Address 56: Radio Labels: 8J0-035-1xx-56.clb
Part No SW: 8P0 035 186 Q HW: 8P0 035 186 Q
Component: R Concert2+ H01 0270
Revision: 00H01000 Serial number: AUZ1Z3G6868463
Coding: 0740122
Shop #: WSC 12345 444 54321
VCID: 40A1B64F13A62E4FE5-8014
No fault code found.
-------------------------------------------------------------------------------
Address 62: Door, Rear Left Labels: 8P4-959-801.lbl
Part No SW: 8P4 959 801 E HW: 8P4 959 801 E
Component: Tuer-SG H04 0040
Coding: 0001176
Shop #: WSC 06314 000 1012544
VCID: 41A7B34B18AC2747EA-8014
No fault code found.
-------------------------------------------------------------------------------
Address 72: Door, Rear Right Labels: 8P4-959-802.lbl
Part No SW: 8P4 959 802 E HW: 8P4 959 802 E
Component: Tuer-SG H04 0040
Coding: 0001176
Shop #: WSC 06314 000 1012544
VCID: 42A5BC471DAA3C5FF3-8016
No fault code found.
-------------------------------------------------------------------------------
Address 77: Telephone Labels: 8P0-862-335.lbl
Part No SW: 8P0 862 335 R HW: 8P0 862 335 R
Component: FSE_255x BT H26 0350
Revision: 00000000 Serial number: 00000005060601
Coding: 0001277
Shop #: WSC 06314 000 00000
VCID: 45AFA75B0C840B67D6-8010
No fault code found.
End-------------------------(Elapsed Time: 01:21)--------------------------Short back story:
I just completed two major repairs:
1)Steering lock replacement (complete disassembly of steering column) I'm mentioning this one because it's the only place I worked inside the car?????
2)Drivers wheel bearing replacement. (I think I blew something up during this process)
What does the HVAC have to do with the wheel bearing you ask? ME - a DIY amateur who breaks as much as he fixes. So basically, I was wrestling getting the CV shaft out of the old hub assembly, and into the new one. I was repeatedly turning the steering wheel left and right trying to find a good position to get the shaft slip in (That's what she said). This went on for some time. During this I had to have the key in the run position to allow the wheel free movement without the steering lock engaging. The battery was starting t run down - ******** so I pulled the negative battery cable**************. When I was finished the wheel bearing install and put everything back together, I proceeded to reattach the negative cable. BUT I DIDNT TURN THE IGNITION OFF FIRST!!!! So you can imagine the the sparks at the battery post during this process as current started pouring in to the vehicles systems again.
Well I pulled the key out, crossed myself, reinserted the key and started the vehicle. All is good! I consider myself lucky at this point. Take it for a quick test drive. Call it a night.
Next day wife takes the car and says I broke the heater.
THE PROBLEM
The Blower wont blow. It doesn't even attempt to spin. There might be a slight single twitch if I hold it in my hand and turn on the blower with the climate control but that could be my imagination.
So, this brings me to today. As best I can tell, all functions work with the climate control module -MAYBE
My testing: basic output test in VCDS for the BLOWER MOTOR yields nothing.
I removed the blower unit from under the dash. I have removed the Fan resistor from the unit. I left the climate controller/power connector from vehicle plugged in to resistor and measured the open circuit voltage on the 2 pins for the fan motor connector on the resistor. I have 14.4 volts on these pins when the engine is running. If I plug the fan back in, NOTHING from the fan. The fan is difficult to spin with my hand. It doesn't spin freely if I give it a good twist and let go.
Off the cuff Id guess I nuked the fan. Fine, whatever, Ill take it. It's 35 buck for a new Denso unit on fleabay.
BUT!!
Here's where I'm confused. Fan doesn't spin when plugged into resistor even though voltage present on fan connector pins. If I wire the fan directly to a car battery with some jumper wire..... IT SPINS!!!! So WTF?
I get the ERROR 01273 - Fresh Air Blower (V2) whether or not the fan motor is plugged into the resistor. I also get Open Circuit or Short to Positive (code not in this autoscan but is usually there) whether or not the the fan motor is plugged into the resistor
Other stranger behavior????????? If I measure the open circuit voltage on the fan motor pins of the resistor, the readings don't change regardless of the fan setting on the climate control. If I had set the fan to half speed, shouldn't there be a change in the voltage output at the fan connector to reduce the fan motor speed????
So, I think it's the fan? but then it works on the work bench hard wired to battery. So why doesn't it spins if there voltage on the pins on the resistor? Is the resistor actually borked and not allowing enough current to pass to the motor?
Resistor in question : 3C0 907 521 B
Blower in question : 1K1 820 015 F
