Golf 7 2.0 TDI ACC: Error

[Rene82]

Hello

Sorry if my english is not the best but anyway i got this error on the car cant figure this out, the problem was the alternator did break down (it is replaced to a new now) all was fine before no error or anything, i did run the battery low as you can see on the log from VCDS, even the voltage is ok now on the battery i cant reset the first error "0076 - Internal Fault" the 3 other error 0077/0078/0080 do reset but come back again


But i wonder why the Voltage on the terminal 15: 0.3 V is that low? i did check fuse 32 for ACC / Front Assist, and thats ok is there ar relay for terminal 15 or anything? as i guess it need to be 12v?

i did try to leave the car with no battery on at all do any have a clue what is going on here?

Chassis Type: AU-VW37 (5Q0)
Scan: 01 02 03 08 09 10 13 15 16 17 19 42 44 52 5F 69

VIN: WVWZZZAUZDW060447 Mileage: 285993km-177707miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
10-Park/Steer Assist -- Status: OK 0000
13-Auto Dist. Reg -- 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
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
69-Trailer -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CRBC) Labels:. 04L-907-309-V1.clb
Part No SW: 04L 906 021 DT HW: 04L 907 309 D
Component: R4 2,0L EDC X22 4943
Revision: 83X22---
Coding: 011D0012037405082000
Shop #: WSC 01286 386 08256
ASAM Dataset: EV_ECM20TDI01104L906021DT 002003
ROD: EV_ECM20TDI01104L906021DT_002_VW37.rod
VCID: 7AADF2F55C5CA70B3D7-802E

1 Fault Found
17156 - Databus
U1123 00 [039] - Received Error Message
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 2
Mileage: 285993 km
Date: 2022.01.07
Time: 14:45:18

Engine RPM: 755.00 /min
Normed load value: 34.9 %
Vehicle speed: 0 km/h
Coolant temperature: 41 °C
Intake air temperature: 27 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.780 V
Unlearning counter according OBD: 40
Drivetrain coordinator: ACC fault status-Bits 0-7: 0
Drivetrain coordinator: ACC fault status-Bits 0-7: 0
Drivetrain coordinator: brake fault status-Bits 0-7: 0
Drivetrain coordinator: brake function status-Bits 0-7: 0
Drivetrain coordinator: brake function status-Bits 0-7: 0
Acceleration: 0.000 m/s²


-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428) Labels:| 5Q0-907-567.clb
Part No SW: 5Q0 907 567 G HW: 5Q0 907 567 G
Component: ACC3 H08 0390
Serial number: 13121203030700
Coding: 001E1900FE030B
Shop #: WSC 55195 000 1048576
ASAM Dataset: EV_ACCBoschMQB 001021
ROD: EV_ACCBoschMQB_VW37.rod
VCID: 3FDB43E107FE42234A9-806A

4 Faults Found
0076 - Internal Fault
B200F F0 [047] - Unknown Error Elaboration
[FAULT_VMON_VZ_FAIL]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 254
Mileage: 285852 km
Date: 2022.01.03
Time: 09:53:15

Control Module temperature: 11 °C
Voltage terminal 15: 10.4 V
Vehicle speed: 35.58 m/s
Acceleration: -0.13 m/s²

0077 - Function Restricted due to Insufficient Voltage
U1400 00 [047] - -
[FAULT_VMON_VZ_LOW]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 4
Fault Frequency: 1
Reset counter: 165
Mileage: 285993 km
Date: 2022.01.07
Time: 14:45:18

Control Module temperature: 11 °C
Voltage terminal 15: 0.3 V
Vehicle speed: 0.00 m/s
Acceleration: 0.00 m/s²

0078 - Function Restricted due to Insufficient Voltage
U1400 00 [047] - -
[FAULT_VMON_VZ_LOW1]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 4
Fault Frequency: 1
Reset counter: 165
Mileage: 285993 km
Date: 2022.01.07
Time: 14:45:18

Control Module temperature: 11 °C
Voltage terminal 15: 0.3 V
Vehicle speed: 0.00 m/s
Acceleration: 0.00 m/s²

0080 - Supply voltage
U1011 00 [047] - Voltage too Low
[FAULT_VMON_VZ_CONFIRMED_LOW]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 4
Fault Frequency: 1
Reset counter: 165
Mileage: 285993 km
Date: 2022.01.07
Time: 14:47:20

Control Module temperature: 11 °C
Voltage terminal 15: 0.3 V
Vehicle speed: 0.00 m/s
Acceleration: 0.00 m/s²




End----------(Elapsed Time: 01:06, VBatt start/end: 12.7V/12.6V)-----------

 

[davegsm82]

Hi Rene82,

I perform repairs on these ACC Radar modules and currently have a customer who has the same list of errors that you have there.

The main problem is corrosion that pushes the casing of the radar open, splits the rubber seal, moisture enters and causes damage to the PCB and connectors. They are sometimes repairable, sometimes not unfortunately, depends how long they have been allowed to marinade with moisture inside.

Have you been able to get yours working again or is it still faulty?

Dave.

 

[MrBounce]

Hi Rene82,

I perform repairs on these ACC Radar modules and currently have a customer who has the same list of errors that you have there.

The main problem is corrosion that pushes the casing of the radar open, splits the rubber seal, moisture enters and causes damage to the PCB and connectors. They are sometimes repairable, sometimes not unfortunately, depends how long they have been allowed to marinade with moisture inside.

Have you been able to get yours working again or is it still faulty?

Dave.

Hi,

Im having an issue with my ACC and I see that you repair them, the codes i'm getting (amongst other database errors) are below. I have checked the fuse (32) and that is ok, it a 13 plate golf (domed long range radar) are you able to repair these and does it sound like its a faulty radar?

Address 13: Auto Dist. Reg Cannot be reached and 4709 - No Communications with Cruise Control (Front) Distance Sensor.

 

[davegsm82]

Hi,

Im having an issue with my ACC and I see that you repair them, the codes i'm getting (amongst other database errors) are below. I have checked the fuse (32) and that is ok, it a 13 plate golf (domed long range radar) are you able to repair these and does it sound like its a faulty radar?

Hi Mr Bounce,

Definitely sounds like a faulty radar or the wiring to the radar has been broken somewhere, worth checking the wiring as much as you can first. No communication is a sure sign that it's not receiving power or that the canbus connection has got a bad connection or a break in the wire.

You'll likely have a bunch of codes in other modules like the engine management and the abs controller complaining about 'missing messages' because they can't talk to the radar.

Whether or not it can be repaired is unfortunately not easy to say without having a look at it, I offer a 'no fix no fee' initial diagnosis to check the electronics, just pay the postage here and back if it's too far gone, if it is a feasible repair then the cost is usually around £100-150 depending on the condition of the case, data connector and what other repairs need doing to the board inside.

Feel free to get in touch with me via PM if you want me to take a look at it.

Hope this helps!