Reverse signal for dashcam rear view

[Mocko1962]

Where can i connect the rear camera activate ( 12V reversing light ??) Signal for rear view mirror type dashcam.

 

[marksmithuk]

I used the green cable running down to the light cluster at the back of the van. Worth testing it with a multimeter first though whilst the van is in reverse to make sure you pick up a 12v feed.

 

[mmi]

T6 - Rear Lights circuit diagrams

Circuit diagrams for tRear Lights

www.t6forum.com

Page 25/4 - green connector T17n under left seat. Or even by BCM (J519) under/in dash.

 

[Cb83]

I have just connected one of these to said Green and black cable running into the reverse light, I have an issue now that the reverse cam won't stay on, it comes on momentarily, then flicks off, on, off etc. All connections are sound, I'm thinking a lack of power? Anyone have any thoughts or way around this?

 

[Robert]

I have just connected one of these to said Green and black cable running into the reverse light, I have an issue now that the reverse cam won't stay on, it comes on momentarily, then flicks off, on, off etc. All connections are sound, I'm thinking a lack of power? Anyone have any thoughts or way around this?

First thing I would do would be to check and make sure that Byte 11 Bit 4 is deactivated(unticked) in 09 BCM.

 

[Cb83]

Is that through vcds? @Robert

 

[Robert]

Is that through vcds? @Robert

Yes mate

 

[Cb83]

Ah OK, I don't have it unfortunately, but if I ever get chance to I will, does that supply 12v to the light then? Thanks for the heads up

 

[Robert]

Ah OK, I don't have it unfortunately, but if I ever get chance to I will, does that supply 12v to the light then? Thanks for the heads up

Yes it does provide 12V DC which could be PWMed( pulse width modulated).
Alternatively if you don't have VCDS you could use this signal as a trigger to a relay and then bring any fused ignition 12V from the fuse board.

 

[Scott6]

I fitted some parking sensors a few weeks back. I used the green reverse light from the rear light cluster, I had issues with the sensors so I wired a 4 pin relay in with a permanent supply to the relay.
Works a treat now.
As mentioned above.

 

[david173]

I fitted some parking sensors a few weeks back. I used the green reverse light from the rear light cluster, I had issues with the sensors so I wired a 4 pin relay in with a permanent supply to the relay.
Works a treat now.
As mentioned above.

What relay did you use mate?

 

[Pauly]

any 12v automotive relay will work, you just need to use the reverse signal to trigger the relay then you can run a clean 12v supply through the relay to the piece of kit that you are trying to control

 

[david173]

any 12v automotive relay will work, you just need to use the reverse signal to trigger the relay then you can run a clean 12v supply through the relay to the piece of kit that you are trying to control

Thanks Pauly i have one connected but it buzzes with the LED rear lights but not the OEM halogens, any ideas?

 

[Cb83]

Bit of a resurrection of this, I have had a chance to look via vdcs but can't seem too find

First thing I would do would be to check and make sure that Byte 11 Bit 4 is deactivated(unticked) in 09 BCM.

Is it possible my bcm doesn't have this option? @Robert

 

[Robert]

What's your BCM?
Maybe you could post your complete unedited VCDS Autoscan?

 

[Cb83]

Sunday,21,February,2021,13:09:52:04173
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 20.12.0.1 (x64) HEX-V2 CB: 0.4529.4
Data version: 20201125 DS322.1
www.Ross-Tech.com


VIN: WV1ZZZ7HZHH0***** License Plate:


Chassis Type: 7H-VN75 (7E0)
Scan: 01 03 04 09 15 17 19 25 5F 61 0B

VIN: WV1ZZZ7HZHH****** Mileage: 191700km-119116miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010
61-Battery Regul. -- Status: Malfunction 0010
-------------------------------------------------------------------------------
Address 01: Engine (2D2D2-CXGB) Labels:. 04L-907-309-V2.clb
Part No SW: 04L 906 056 KA HW: 04L 907 445
Component: R4 2.0l TDI H02 6163
Revision: 23002001
Coding: 00114010430401090000
Shop #: WSC 02737 790 50316
ASAM Dataset: EV_ECM20TDI03004L906056KA 004012
ROD: EV_ECM20TDI03004L906056KA.rod
VCID: 76B5ED5B9846396B59E-8022

6 Faults Found:
25796 - Body Control Module (Central Electric)
U0140 00 [047] - No Communications
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 24
Mileage: 190860 km
Date: 2050.01.27
Time: 12:22:42

Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 31 °C
Intake air temperature: 15 °C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 12.078 V
Unlearning counter according OBD: 40
Accelerator pedal travel: raw value: 0.00 %
CAN status - engine control module: 0
Cruise Control System (CCS): status: main switch off
selected gear: Shifting process active

29973 - Coolant Pump for EGR
P24A7 00 [032] - Open Circuit
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2
Mileage: 191303 km
Date: 2051.01.01
Time: 16:14:12

Engine RPM: 895.00 /min
Normed load value: 29.4 %
Vehicle speed: 0 km/h
Coolant temperature: 14 °C
Intake air temperature: 11 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.046 V
Unlearning counter according OBD: 34
Air mass at air mass meter 1: 54.0 kg/h
Standardized air flow ratio: 1.024 counts
Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: 1.25 %
Throttl.valve adapt. 1 bank 1: posit feedback - Actual value: 0.13 %
Charge air pressure: specified value: 0.969 bar
Absolute intake pressure: 107 kPa abs
Mean injection quantity: 9 mg/stroke
Index of current engine mode: 0
Index of next requested engine mode: 0
Index of engine target mode: 0

29975 - Coolant Pump for EGR
P24A9 00 [175] - Short to GND
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Mileage: 190860 km
Date: 2050.01.27
Time: 12:22:44

Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 31 °C
Intake air temperature: 15 °C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 12.031 V
Unlearning counter according OBD: 40
Air mass at air mass meter 1: 0.0 kg/h
Standardized air flow ratio: 1.000 counts
Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: -10.17 %
Throttl.valve adapt. 1 bank 1: posit feedback - Actual value: 0.00 %
Charge air pressure: specified value: 0.004 bar
Absolute intake pressure: 100 kPa abs
Mean injection quantity: 0 mg/stroke
Index of current engine mode: 0
Index of next requested engine mode: 0
Index of engine target mode: 0

15560 - EGR Sensor 1
P046C 00 [108] - Implausible Signal
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 190860 km
Date: 2050.01.27
Time: 12:31:41

Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 51 °C
Intake air temperature: 9 °C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 12.679 V
Unlearning counter according OBD: 40
Mass airflow sensor 1 bank 1 airflow: raw value: 0.0 mg/stroke
Exhaust recirc.valve 1 bank 1: posit.feedback - Specified value: 3.26 %
Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: 3.08 %
Exhaust recirc.valve 1 bank 1: posit.feedback - Offset closed: 0.00 %
Exhaust recirc.valve 1 bank 1: posit.feedback - Raw voltage: 2.498 V
EGR vacuum regulator solenoid valve 1 bank 1: res. Cooling mode stop: 2.334 V
EGR vacuum regulator solenoid valve 1 bank 1: res. Bypass operation stop: 2.560 V

23871 - EGR System
P0401 00 [096] - Insufficient Flow
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 191228 km
Date: 2051.01.00
Time: 16:36:19

Engine RPM: 2616.50 /min
Normed load value: 62.4 %
Vehicle speed: 111 km/h
Coolant temperature: 92 °C
Intake air temperature: 14 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.125 V
Unlearning counter according OBD: 31
EGR travel diagnosis: strongly increased NOx emission: 0.00 kg/h
Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: -115.88 %
EGR travel diagnosis: marginally increased NOx emission: -34.10 kg/h
Mass airflow sensor 1 bank 1 airflow: raw value: 904.1 mg/stroke
Throttl.valve adapt. 1 bank 1: posit feedback - Actual value: 0.00 %
Charge press. ctrl deviation after throttle valve bank 1-Pressure_16_signed_10_mbar: 2.9 mbar
O2 sens. 1 bank 1 upstrm oxi cat: raw value: 2.193 counts

32807 - Exhaust Gas Recirculation System
P2457 00 [236] - Insufficient Cooling Performance
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 4
Mileage: 191407 km
Date: 2051.01.02
Time: 16:32:58

Engine RPM: 2552.50 /min
Normed load value: 55.7 %
Vehicle speed: 108 km/h
Coolant temperature: 90 °C
Intake air temperature: 13 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.109 V
Unlearning counter according OBD: 40
Air mass at air mass meter 1: 234.0 kg/h
Standardized air flow ratio: 1.285 counts
Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: -115.94 %
Throttl.valve adapt. 1 bank 1: posit feedback - Actual value: 0.00 %
Charge air pressure: specified value: 2.029 bar
Absolute intake pressure: 201 kPa abs
Mean injection quantity: 22 mg/stroke
Index of current engine mode: 13
Index of next requested engine mode: 13
Index of engine target mode: 13

Readiness: N/A

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels: 7E0-907-37x-MK100ESC.clb
Part No SW: 7E0 907 379 P HW: 7E0 907 379 M
Component: ESC H06 0133
Revision: 00000000 Serial number: 41556000000227
Coding: 517E4098256484818A760276A48221E6790000
Shop #: WSC 02739 790 50316
ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
ROD: EV_Brake1ESCCONTIVN75XGP2_011.rod
VCID: 3FDB487FF7FCB8234A8-806A

No fault code found.

-------------------------------------------------------------------------------
Address 04: Steering Angle (G085) Labels:* 6R0-959-654.clb
Part No SW: 6R0 959 654 HW: 6R0 959 654
Component: LENKW.SENSOR H07 0070
Serial number: 14061613470217
Coding: 01
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_LWSKLOVW25X 005001
ROD: EV_LWSKLOVW25X.rod
VCID: 7EA5F57BB076712B01E-802A

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels:. 7E0-937-BCM-V1.clb
Part No SW: 7E0 937 090 B HW: 7E0 937 090
Component: BCM PQ25 Max4 H81 0744
Revision: B9081001 Serial number: 0982 187161459
Coding: E0A4303A0A212031002009742E2B9C500F00708F60464DE0320400220800
Shop #: WSC 02737 022 1095930
VCID: 2A0D092B1CFE2D8B0D6-807E

Subsystem 1 - Part No SW: 7E0 959 801 P HW: 7E0 959 801 P
Component: J386__TSG_FT 003 0653
Serial number: KU0KU005071661876002
Coding: 1400B0

Subsystem 2 - Part No SW: 7E0 959 802 P HW: 7E0 959 802 P
Component: J387__TSG_BT 003 0653
Serial number: KU0KU023061661755285
Coding: 0400A0

1 Fault Found:
03303 - Response Closing Status of Rear Left Door
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 2
Fault Frequency: 20
Reset counter: 66
Mileage: 190860 km
Time Indication: 0
Date: 2021.02.10
Time: 12:31:42


-------------------------------------------------------------------------------
Address 15: Airbags (J234) Labels:| 5K0-959-655.clb
Part No SW: 7E0 959 655 G HW: 7E0 959 655 G
Component: VW10Airbag021 H08 0018
Revision: -------- Serial number: 003V3001D9J-
Coding: 000000000000000000000000000000003231
Shop #: WSC 02734 790 50316
ASAM Dataset: EV_AirbaVW10BPAVW12X 001028
ROD: EV_AirbaVW10BPAVN750.rod
VCID: 3A2D396BECDE9D0B7D6-806E

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285) Labels:| 5K0-920-xxx-17.clb-SRI1
Part No SW: 7E0 920 960 S HW: 7E0 920 960 S
Component: KOMBI H03 1104
Serial number: 00000000000000
Coding: 450B010300
Shop #: WSC 02737 790 50316
ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A05733
ROD: EV_Kombi_UDS_VDD_RM09_005_VW25.rod
VCID: 392F2667E9D8961374C-806C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533) Labels:. 7E0-909-901.clb
Part No SW: 7E0 909 901 HW: 7E0 937 090
Component: GW-K-CAN TP20 H81 0744
Revision: B9081001
Coding: 042305
Shop #: WSC 02737 022 1095930
VCID: 6889B323C272DF9BDB2-803C

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334) Labels:| 5K0-920-xxx-25.clb
Part No SW: 5K0 953 234 HW: 5K0 953 234
Component: IMMO H03 1104
Serial number:
Coding: 000000
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
ROD: EV_Immo_UDS_VDD_RM09_VW23.rod
VCID: 6A8DC92BDCFEED8BCD6-803E

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794) Labels:| 5G0-035-MIB-ENT2.clb
Part No SW: 1K8 035 150 L HW: 1K8 035 150 L
Component: MU-E-D-ER 055 7067
Serial number: 17061600012794
Coding: 065700003C00000041111101008000001F0000C60000010001
Shop #: WSC 02737 790 50316
ASAM Dataset: EV_MUEnt4CGen2LGE 001032
ROD: EV_MUEnt4CGen2LGE_VW32.rod
VCID: 2E05053B209641ABD1E-807A

4 Faults Found:
0517 - Front Right Bass Speaker
B1062 13 [009] - Open Circuit
[Tieftonlautsprecher Kanal 2: Unterbrechung (DC-Diagnose)]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 7
Mileage: 190860 km
Date: 2021.02.10
Time: 12:22:39

Voltage terminal 30: 11.9 V

0518 - Front Right Treble Speaker
B1064 13 [009] - Open Circuit
[Hochtonlautsprecher Kanal 2: Unterbrechung (AC-Diagnose)]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 9
Mileage: 190949 km
Date: 2021.02.11
Time: 09:45:26

Voltage terminal 30: 11.7 V

0522 - Front Left Bass Speaker
B105F 13 [009] - Open Circuit
[Tieftonlautsprecher Kanal 3: Unterbrechung (DC-Diagnose)]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 7
Mileage: 190860 km
Date: 2021.02.10
Time: 12:22:39

Voltage terminal 30: 11.9 V

0523 - Front Left Treble Speaker
B1061 13 [009] - Open Circuit
[Hochtonlautsprecher Kanal 3: Unterbrechung (AC-Diagnose)]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 9
Mileage: 190949 km
Date: 2021.02.11
Time: 09:45:26

Voltage terminal 30: 11.7 V


-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840) Labels:. 1K0-907-534.clb
Part No SW: 7E0 907 534 HW: 7E0 937 090
Component: Batt.regelung H81 0744
Serial number: 0982 187161459
Coding: 030B1A73
Shop #: WSC 02739 790 00000
VCID: 6889B323C272DF9BDB2-803C

Subsystem 1 - Part No SW: 7E0 915 181 K HW: 7E0 915 181 K
Component: J367-BDMConti H03 1050
Serial number: 75410903001606111808

1 Fault Found:
02252 - Generator
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 7
Mileage: 190860 km
Time Indication: 0
Date: 2021.02.10
Time: 12:23:43


End----(Elapsed Time: 01:03, VBatt start/end: 11.8V/11.8V. VIgn 11.7V)-----

 

[Robert]

Bit of a resurrection of this, I have had a chance to look via vdcs but can't seem too find
Is it possible my bcm doesn't have this option? @Robert

Definitely does.
In fact your BCM is identical to mine.

 

[Cb83]

ok, thank you @Robert sorry to hijack your sunday..! what is the process to get to it? i've obviously missed something along the way

 

[Robert]

Your current BCM coding is: E0A4303A0A212031002009742E2B9C500F00708F60464DE0320400220800
Your current Byte 11 hex value is 74 and you need to change it to 64.

https://www.t6forum.com/threads/bcu-central-electrics-module-09-byte-screen-shots.9778/post-144112

 

[Cb83]

Brilliant, thank you for that!