Hello all,
So on my 2005 VW Jetta wagon 1.8t I do not get a confirmation "beep" when I lock the car. I first thought it was due to faulty door lock modules because I had signal communication error codes to several doors, and intermittent locking issues, I have since replaced them all and all are now in working order. Upon my last replacement, I went to do the celebratory lock anticipating the "beep" and to my disappointment I did not receive it (although all doors lock/unlock now correctly, so that was a plus). I then used my lovely VCDS and measuring block 08 in central convenience and noticed the front hood latch showed "open" even though the hood was shut. Ahhhhaaaa! So while looking at measuring block 08, with hood open, i manually clicked up and down on the hood latch contact switch, and sadly the measuring block value stayed at "open". So I thought to myself, OK, easy fix, i'll just purchase a new hood latch switch + harness.
Fast forward to today, before tearing apart the front grill + hood latch assembly, I simply unplugged the harness at the easily accessibly harness connector (front of engine bay on passenger side) and plugged in the new OEM one. Started up my VCDS, went to measuring block 08, and clicked the contact switch up/down and the valued stayed at "open". !! I then thought, OK maybe it is a defective part (unlikely) so I tested the new part on my older 2003 VW jetta and sure enough the value in VCDS went from "open" to "close" etc etc. So i know the new OEM switch (and most likely the original is good too). I then grabbed my trusty test light, unplugged the connector and found with the ignition ON (engine off) on my older 2003 VW jetta I get +12V on pin #2 (brown wire with red stripe). I then go repeat this test on my 2005 mk4 jetta and wouldnt you know I do not have power at pin #2 !!
So I start trying to trace this wire all over the engine bay, tearing things apart and thanks to my lack of electrical wire tracing skills, cannot find where it terminates or really where it even leads too.
So my question to the VCDS community is this: Can I make a program / coding change to trick the car to think it is a always "closed" signal ? This would avoid tearing apart wiring looms trying to find where the single wire is open? Oh and I should mention before I started tearing thru, I was able to de-pin the #2 to inspect the crimped connector and all was secure with a good connection.
If I cannot, does anyone have a clue where this wire has a common failure point? FYI, my full auto scan is below:
I know this is small potatoes, but i am a mechanical engineer and it bugs me when a system is designed in a certain way and it does not perform as expected! Cheers and thank you for reading!
So on my 2005 VW Jetta wagon 1.8t I do not get a confirmation "beep" when I lock the car. I first thought it was due to faulty door lock modules because I had signal communication error codes to several doors, and intermittent locking issues, I have since replaced them all and all are now in working order. Upon my last replacement, I went to do the celebratory lock anticipating the "beep" and to my disappointment I did not receive it (although all doors lock/unlock now correctly, so that was a plus). I then used my lovely VCDS and measuring block 08 in central convenience and noticed the front hood latch showed "open" even though the hood was shut. Ahhhhaaaa! So while looking at measuring block 08, with hood open, i manually clicked up and down on the hood latch contact switch, and sadly the measuring block value stayed at "open". So I thought to myself, OK, easy fix, i'll just purchase a new hood latch switch + harness.
Fast forward to today, before tearing apart the front grill + hood latch assembly, I simply unplugged the harness at the easily accessibly harness connector (front of engine bay on passenger side) and plugged in the new OEM one. Started up my VCDS, went to measuring block 08, and clicked the contact switch up/down and the valued stayed at "open". !! I then thought, OK maybe it is a defective part (unlikely) so I tested the new part on my older 2003 VW jetta and sure enough the value in VCDS went from "open" to "close" etc etc. So i know the new OEM switch (and most likely the original is good too). I then grabbed my trusty test light, unplugged the connector and found with the ignition ON (engine off) on my older 2003 VW jetta I get +12V on pin #2 (brown wire with red stripe). I then go repeat this test on my 2005 mk4 jetta and wouldnt you know I do not have power at pin #2 !!
So I start trying to trace this wire all over the engine bay, tearing things apart and thanks to my lack of electrical wire tracing skills, cannot find where it terminates or really where it even leads too.
So my question to the VCDS community is this: Can I make a program / coding change to trick the car to think it is a always "closed" signal ? This would avoid tearing apart wiring looms trying to find where the single wire is open? Oh and I should mention before I started tearing thru, I was able to de-pin the #2 to inspect the crimped connector and all was secure with a good connection.
If I cannot, does anyone have a clue where this wire has a common failure point? FYI, my full auto scan is below:
Code:
Sunday,28,July,2019,20:24:04:53404
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 19.6.1.0 (x64) HEX-V2 CB: 0.4508.4
Data version: 20190529 DS308.0
www.Ross-Tech.com
VIN: WVWSE61J25W010683 License Plate: BR76LB
Mileage: 273120km-169708mi Repair Order:
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Chassis Type: 1J (9M - VW Jetta IV (1998 > 2014))
Scan: 01 02 03 08 09 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57
75 76
VIN: WVWSE61J25W010683 Mileage: 273120km-169708miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: 06A-906-032-AWP.lbl
Part No: 06A 906 032 SK
Component: 1.8L R4/5VT G 0030
Coding: 07500
Shop #: WSC 01266
VCID: 79AF10D230C45B0F8D7-5160
WVWSE61J25W010683 VWZ7Z0D9180863
3 Faults Found:
16804 - Catalyst System; Bank 1
P0420 - 35-10 - Efficiency Below Threshold - Intermittent
16795 - Secondary Air Injection System
P0411 - 35-10 - Incorrect Flow Detected - Intermittent
16840 - EVAP System
P0456 - 35-10 - Very Small Leak Detected - Intermittent
Readiness: 0000 0000
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1C0-907-37x-ESP-F.lbl
Part No: 1C0 907 379 M
Component: ESP FRONT MK60 0102
Coding: 0019970
Shop #: WSC 01266 785 00200
VCID: 3431E1E6522666671E1-5184
No fault code found.
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 6Q0-909-605-VW5.lbl
Part No: 1C0 909 605 F
Component: 17 AIRBAG VW61 0108 0003
Coding: 12599
Shop #: WSC 01266
VCID: 270B06AA96F01DFFAB3-513C
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 1J0-907-487-A.lbl
Part No: 1J0 907 487 A
Component: Lenkradelektronik 0005
Coding: 00118
Shop #: WSC 01266
VCID: 2F3BEE8ABE0045BF633-5184
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 1J0-920-xx5-17.lbl
Part No: 1J5 920 906 J
Component: KOMBI+WEGFAHRSP VDO V03
Coding: 05232
Shop #: WSC 00000
VCID: 3431E1E6572666671E1-513C
WVWSE61J25W010683 VWZ7Z0D9180863
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 6N0-909-901-19.lbl
Part No: 6N0 909 901
Component: Gateway K<->CAN 0001
Coding: 00006
Shop #: WSC 01266
VCID: 70B92DF663BE1A473A9-513C
1 Fault Found:
01332 - Door Control Module; Passenger Side (J387)
49-10 - No Communications - Intermittent
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 1C0-959-799.lbl
Part No: 1C0 959 799 C
Component: 8A Komfortgerát HLO 0004
Coding: 00259
Shop #: WSC 01266
VCID: 372BD6EA46508D7F3B3-4B1E
Subsystem 1 - Part No: 1C1959801A
Component: 8A Tõrsteuer.FS KLO 0202
Subsystem 2 - Part No: 1C1959802A
Component: 8A Tõrsteuer.BF KLO 0202
Subsystem 3 - Part No: 1C0959811A
Component: 8A Tõrsteuer.HL KLO 0202
Subsystem 4 - Part No: 1C0959812A
Component: 8A Tõrsteuer.HR KLO 0202
1 Fault Found:
00930 - Locking Module for Central Locking; Rear Left (F222)
27-10 - Implausible Signal - Intermittent
-------------------------------------------------------------------------------
Address 56: Radio Labels: 3B7-035-1xx-56.lbl
Part No: 3B7 035 180 G
Component: Radio PM6 0016
Coding: 04031
Shop #: WSC 01266
VCID: 241111A6E7C6F6E78E1-513C
No fault code found.
I know this is small potatoes, but i am a mechanical engineer and it bugs me when a system is designed in a certain way and it does not perform as expected! Cheers and thank you for reading!