How to test Radiator Fan, Control Modle, or relay with VCDS Lite audi a4 / b6

   #21  

DrPeter

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Regarding S4 and S42, how do I identify those fuses in those locations?

Like Jack said... workshop manuals - www.erwin.audi.com

- They will provide wiring diagrams, component locations, repair information and pictures/drawings too!

I would not want to diagnose a Volkswagen, an Audi, a Bentley or a Lamborghini or even a Bugatti without the proper wiring diagram in hand, there are just too many variables that these vehicles can have and sometimes these diagrams are not 100% correct, so pay attention to that as well.

When you find the wiring diagram, use this link below to help understand what you are looking at:
How to read wiring diagrams


drpeter
 
   #22  

verrilli

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The ground points can be verified in the repair manual for locations.

www.erwin.audi.com

You have no faults.....and you don't have readiness achieved.

Please preform readiness tests.........then repost full scan.


Ok, I have the wiring diagrams.
I also checked ground to the Fan CU and the ECU. The bolts to the chassis seem tight.

I performed the readiness test. The first time it was successful, but then I realized that I had the fan plug disconnected. I plugged it in, reset the fault, and now I can't get the O2 sensor heating test to pass. Do I have to wait some time on that one?

Here is the auto-scan output. Following that are the MVBs at various points.
Any suggestions? I'm about to give up and bring to service shop although I hate to give up ! But I also don't want buy another Fan ECU if I'm not sure that's the culprit.

Code:
Thursday,06,August,2015,21:49:19:37593
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 15.7.0.1 (x64)
Data version: 20150729
www.Ross-Tech.com


VIN: WAULC68E13A154719   License Plate: 
Mileage: 270350km-167987mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
          67 69 75 76 77
 
VIN: WAULC68E13A154719   Mileage: 270350km-167987miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 06B-909-518-AMB.lbl
   Part No SW: 8E0 909 518 AF    HW: 8E0 909 018 A
   Component: 1.8L R4/5VT     G   0001  
   Coding: 0016751
   Shop #: WSC 63351 000 00000
   VCID: 74E7161D1429F69E42-515E

No fault code found.
Readiness: 0100 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 01V-927-156.lbl
   Part No: 8E0 927 156 P
   Component: AG5 01V 1.8l5VT USA 0910  
   Coding: 0001002
   Shop #: WSC 63351 000 00000
   VCID: 3B75FD2179F779E643-5140

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 8E0-614-517.lbl
   Part No: 8E0 614 517 H
   Component: ABS/ESP allrad      2328  
   Coding: 04277
   Shop #: WSC 12345  
   VCID: 2D51C379E783E756CD-5124

1 Fault Found:
01826 - Sensor for Steering Angle (G85); Supply Voltage Terminal 30 
            35-10 -  -  - Intermittent

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 8E0-820-043.lbl
   Part No: 8E0 820 043 L
   Component:   A4 Klimaautomat   1016  
   Coding: 00000
   Shop #: WSC 63351  
   VCID: 2A5BC865D66DF06E28-5140

4 Faults Found:
00710 - Defroster Flap Positioning Motor (V107) 
            41-10 - Blocked or No Voltage - Intermittent
00727 - Potentiometer in Positioning Motor for Defrost Flap (G135) 
            30-10 - Open or Short to Plus - Intermittent
01810 - Actuating Motor for Temperature Flap; Right (V159) 
            41-10 - Blocked or No Voltage - Intermittent
01274 - Air Flow Flap Positioning Motor (V71) 
            41-10 - Blocked or No Voltage - Intermittent

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 8E0-907-279-8E2.lbl
   Part No: 8E0 907 279 E
   Component: int. Lastmodul  USA 0305  
   Coding: 00003
   Shop #: WSC 63351  
   VCID: 3467D61D04A9B69E82-4B00

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 8E0-959-655-84.lbl
   Part No: 8E0 959 655 C
   Component: Airbag 8.4EP        2000  
   Coding: 0010607
   Shop #: WSC 63351 000 00000
   VCID: 377DE11145DF5D86A7-5140

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 8E0-953-549.lbl
   Part No: 8E0 953 549 L
   Component: Lenksáulenmodul     0308  
   Coding: 00041
   Shop #: WSC 63351  
   VCID: 3C77FE3D2CF97EDE4A-4B1A

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 8E0-920-9xx-8E2.lbl
   Part No: 8E0 920 950 L
   Component: KOMBI+WEGFAHRS. RB4 D35  
   Coding: 03200
   Shop #: WSC 09211  
   VCID: 326BD005FEBDB8AE90-5140
   WAULC68E13A154719     AUZ6Z0B0187480

1 Fault Found:
00668 - Supply Voltage Terminal 30 
            53-10 - Supply Voltage Too Low - Intermittent

-------------------------------------------------------------------------------
Address 45: Inter. Monitor        Labels: 8E0-951-177.lbl
   Part No: 8E0 951 177 
   Component: Innenraumueberw.   0604  
   Coding: 00001
   Shop #: WSC 00000  
   VCID: 6BD50D611917296693-515E

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 8E0-959-433-MAX.lbl
   Part No: 8E0 959 433 BB
   Component: Komfortgerát T7B    1311  
   Coding: 11788
   Shop #: WSC 63351  
   VCID: 72EB10053E3DF8AE50-4B1A

   Subsystem 1 - Part No: 8E1959801
   Component: Tõrsteuer.FS BRM 0002  

   Subsystem 2 - Part No: 8E1959802E
   Component: Tõrsteuer.BF BRM 0002  

   Subsystem 3 - Part No: 8E0959801A
   Component: Tõrsteuer.HL BRM 0002  

   Subsystem 4 - Part No: 8E0959802A
   Component: Tõrsteuer.HR BRM 0002  

6 Faults Found:
01330 - Central Control Module for Central Convenience (J393) 
            53-10 - Supply Voltage Too Low - Intermittent
01134 - Alarm Horn (H12) 
            29-10 - Short to Ground - Intermittent
01134 - Alarm Horn (H12) 
            49-00 - No Communications
01370 - Alarm triggered by Interior Monitoring 
            35-00 -  - 
01561 - Rear left door 
            59-10 - Can't Unlock - Intermittent
01562 - Rear right door 
            59-10 - Can't Unlock - Intermittent

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 8E0-035-1xx-56.lbl
   Part No: 8E0 035 195 F
   Component: symphony II NP2    0051   
   Coding: 01001
   Shop #: WSC 08102  
   VCID: 2A5BC865D66DF06E28-4E96

3 Faults Found:
00858 - Connection; Radio Intermediate Frequency (IF) Output to Antenna Amplifier 
            36-00 - Open Circuit
00878 - Connection to Speaker Front Left 
            36-10 - Open Circuit - Intermittent
00879 - Connection to Speaker Front Right 
            36-10 - Open Circuit - Intermittent

End-------------------------(Elapsed Time: 06:37)--------------------------

Here are the MVBs right before I turn off the ignition.
Code:
--------------------------------------------------------------------------------


                Address 01: Engine  (8E0 909 518 AF)

21:50:05 Group 131: Engine Cooling (Map Cooling)
  100.0°C  Engine Outlet Temp. (actual)
  101.0°C  Engine Outlet Temp. (specified)
  61.0°C  Radiator Outlet Temperature
  14.1 %  Thermostat Duty Cycle

21:50:05 Group 132: Engine Cooling (Map Cooling)
       
  39.0°C  Temp. Difference Engine/Radiator
       
  00001110  Cooling Status 

21:50:05 Group 134: Engine Cooling (Temperatures)
  97.0°C  Oil Temperature 
  25.0°C  Ambient Temperature
  66.0°C  Intake Air Temperature (G42)
  100.0°C  Engine Outlet Temperature

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (8E0 909 518 AF)

21:50:16 Group 131: Engine Cooling (Map Cooling)
  102.0°C  Engine Outlet Temp. (actual)
  101.0°C  Engine Outlet Temp. (specified)
  57.0°C  Radiator Outlet Temperature
  31.4 %  Thermostat Duty Cycle

21:50:16 Group 132: Engine Cooling (Map Cooling)
       
  43.0°C  Temp. Difference Engine/Radiator
       
  00000110  Cooling Status 

21:50:16 Group 137: Engine Cooling (Air Condition Requirements)
  A/C-Low  A/C Readiness 
  Compr.ON  A/C Compressor 
  13.8 bar  A/C-Pressure 
  79.2 %  Fan Request from A/C-System

--------------------------------------------------------------------------------

Here they are 7 minutes after. I think the 137 is frozen from when the ignition was turned off ??

Code:
--------------------------------------------------------------------------------


                Address 01: Engine  (8E0 909 518 AF)

21:58:00 Group 131: Engine Cooling (Map Cooling)
  99.0°C  Engine Outlet Temp. (actual)
  104.0°C  Engine Outlet Temp. (specified)
  44.0°C  Radiator Outlet Temperature
  3.9 %  Thermostat Duty Cycle

21:58:00 Group 132: Engine Cooling (Map Cooling)
       
  55.0°C  Temp. Difference Engine/Radiator
       
  00001000  Cooling Status 

21:58:00 Group 135: Engine Cooling (Fan Activation)
  44.0°C  Radiator Outlet Temperature
  11.0 %  Fan 1 Activation Duty Cycle
       
       

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (8E0 909 518 AF)

21:58:08 Group 131: Engine Cooling (Map Cooling)
  99.0°C  Engine Outlet Temp. (actual)
  104.0°C  Engine Outlet Temp. (specified)
  44.0°C  Radiator Outlet Temperature
  3.9 %  Thermostat Duty Cycle

21:58:08 Group 132: Engine Cooling (Map Cooling)
       
  54.0°C  Temp. Difference Engine/Radiator
       
  00001000  Cooling Status 

21:58:08 Group 137: Engine Cooling (Air Condition Requirements)
  A/C-High  A/C Readiness 
  Compr.ON  A/C Compressor 
  14.2 bar  A/C-Pressure 
  81.2 %  Fan Request from A/C-System

--------------------------------------------------------------------------------

Here they are just before the 15 minutes are up

Code:
--------------------------------------------------------------------------------


                Address 01: Engine  (8E0 909 518 AF)

22:05:20 Group 131: Engine Cooling (Map Cooling)
  99.0°C  Engine Outlet Temp. (actual)
  104.0°C  Engine Outlet Temp. (specified)
  42.0°C  Radiator Outlet Temperature
  3.9 %  Thermostat Duty Cycle

22:05:20 Group 132: Engine Cooling (Map Cooling)
       
  52.0°C  Temp. Difference Engine/Radiator
       
  00001000  Cooling Status 

22:05:20 Group 135: Engine Cooling (Fan Activation)
  42.0°C  Radiator Outlet Temperature
  11.0 %  Fan 1 Activation Duty Cycle
       
       

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (8E0 909 518 AF)

22:05:28 Group 131: Engine Cooling (Map Cooling)
  99.0°C  Engine Outlet Temp. (actual)
  104.0°C  Engine Outlet Temp. (specified)
  42.0°C  Radiator Outlet Temperature
  3.9 %  Thermostat Duty Cycle

22:05:28 Group 134: Engine Cooling (Temperatures)
  97.0°C  Oil Temperature 
  25.0°C  Ambient Temperature
  66.0°C  Intake Air Temperature (G42)
  99.0°C  Engine Outlet Temperature

22:05:28 Group 137: Engine Cooling (Air Condition Requirements)
  A/C-High  A/C Readiness 
  Compr.ON  A/C Compressor 
  14.2 bar  A/C-Pressure 
  81.2 %  Fan Request from A/C-System

--------------------------------------------------------------------------------

and finally here they are after the fans have spontaneously come on and then I turned on the ignition again. The fans go off at this point.

Code:
--------------------------------------------------------------------------------


                Address 01: Engine  (8E0 909 518 AF)

22:07:44 Group 131: Engine Cooling (Map Cooling)
  94.0°C  Engine Outlet Temp. (actual)
  104.0°C  Engine Outlet Temp. (specified)
  42.0°C  Radiator Outlet Temperature
  3.9 %  Thermostat Duty Cycle

22:07:44 Group 132: Engine Cooling (Map Cooling)
       
  52.0°C  Temp. Difference Engine/Radiator
       
  00001000  Cooling Status 

22:07:44 Group 135: Engine Cooling (Fan Activation)
  42.0°C  Radiator Outlet Temperature
  11.0 %  Fan 1 Activation Duty Cycle
       
       

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine  (8E0 909 518 AF)

22:07:52 Group 131: Engine Cooling (Map Cooling)
  94.0°C  Engine Outlet Temp. (actual)
  104.0°C  Engine Outlet Temp. (specified)
  42.0°C  Radiator Outlet Temperature
  3.9 %  Thermostat Duty Cycle

22:07:52 Group 134: Engine Cooling (Temperatures)
  81.0°C  Oil Temperature 
  25.0°C  Ambient Temperature
  66.0°C  Intake Air Temperature (G42)
  94.0°C  Engine Outlet Temperature

22:07:52 Group 137: Engine Cooling (Air Condition Requirements)
  A/C-Low  A/C Readiness 
  Compr.OFF  A/C Compressor 
  6.8 bar  A/C-Pressure 
  0.0 %  Fan Request from A/C-System
 
   #23  

verrilli

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My problem turned out to be a bad (new) Fan ECU module. The module I got was off ebay and was from China. I guess there was a reason it was 1/3 the price of a factory module.
 
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