norwegian096
New member
Hello,
Recently i got some issues with the climate in my 2019 model e-golf. It only blows out cold air, and thats not so suitable for me here in cold Norway.
When i run auto scan through my VCDS i only get one fault, and thats under C5 Therm. mgt. (J1024). The fault code says that there something wrong with local databus:
Address C5: Therm. mgt. (J1024) Labels:* 5GE-907-458.clb
Part No SW: 5GE 907 458 C HW: 5GE 907 458
Component: TME-Min H20 0203
Serial number: 0103207
Coding: 02
Shop #: WSC 00029 028 00019
ASAM Dataset: EV_ThermContrVISAU49X 001021
ROD: EV_ThermContrVISAU49X_VW37.rod
VCID: 45D75B45352397722CD-8010
Auxiliary Air Heater Control Module/PTC:
Subsystem 1 - Part No SW: 12E 963 231 G HW: 12E 963 231 G
Component: J848 HV-PTC H09 0208
Serial number: LR190433003810000483
A/C pressure/coolant temperature sensor 3:
Subsystem 2 - Part No SW: 4M0 959 603 C HW: 4M0 959 603 C
Component: G827 pT-Sens3 H11 0010
A/C pressure/coolant temperature sensor 5:
Subsystem 3 - Part No SW: 4M0 959 603 C HW: 4M0 959 603 C
Component: G829 pT-Sens5 H11 0010
Expansion valve 2 for refrigerant:
Subsystem 4 - Part No SW: 4M0 816 682 D HW: 4M0 816 682 D
Component: N637 EV2_KaMi H12 0102
Serial number: 00000000000120621177
Expansion valve 3 for refrigerant:
Subsystem 5 - Part No SW: 4M0 816 682 D HW: 4M0 816 682 D
Component: N638 EV3_KaMi H12 0102
Serial number: 00000000000120621371
1 Fault Found:
37030 - Local Databus
U1030 00 [00100111] - Electrical Malfunction
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 3
Fault Frequency: 1
Mileage: 116402 km
Date: 2025.01.22
Time: 01:57:51
As you can see from the scan there are several components that are missing, like sensors, ac comp and valves. I have read the wiring diagram and found out that all the missing components that doesnt show up on the auto scan is one the same LIN bus. This is the troubleshooting ive done so far:
- Calibrated HVAC
- Checked AC rele
- Checked all temp/press sensors in VCDS and they provide all info theyre supposed to do.
- Checked/measured the LIN wire between J1024 and AC compressor.
- Checked all grounding points.
- Checked 12V battery voltage (12.6V without being connected)
- Check all fuses.
- Checked AC refrigerant.
- Also checked all connectors related for corrosion.
Im about to buy new (used) Thermal management control module (J1024) and see if thats the problem.... And im wondering if the new old one needs to be coded in?
Any other suggestions for further troubleshooting?
Recently i got some issues with the climate in my 2019 model e-golf. It only blows out cold air, and thats not so suitable for me here in cold Norway.
When i run auto scan through my VCDS i only get one fault, and thats under C5 Therm. mgt. (J1024). The fault code says that there something wrong with local databus:
Address C5: Therm. mgt. (J1024) Labels:* 5GE-907-458.clb
Part No SW: 5GE 907 458 C HW: 5GE 907 458
Component: TME-Min H20 0203
Serial number: 0103207
Coding: 02
Shop #: WSC 00029 028 00019
ASAM Dataset: EV_ThermContrVISAU49X 001021
ROD: EV_ThermContrVISAU49X_VW37.rod
VCID: 45D75B45352397722CD-8010
Auxiliary Air Heater Control Module/PTC:
Subsystem 1 - Part No SW: 12E 963 231 G HW: 12E 963 231 G
Component: J848 HV-PTC H09 0208
Serial number: LR190433003810000483
A/C pressure/coolant temperature sensor 3:
Subsystem 2 - Part No SW: 4M0 959 603 C HW: 4M0 959 603 C
Component: G827 pT-Sens3 H11 0010
A/C pressure/coolant temperature sensor 5:
Subsystem 3 - Part No SW: 4M0 959 603 C HW: 4M0 959 603 C
Component: G829 pT-Sens5 H11 0010
Expansion valve 2 for refrigerant:
Subsystem 4 - Part No SW: 4M0 816 682 D HW: 4M0 816 682 D
Component: N637 EV2_KaMi H12 0102
Serial number: 00000000000120621177
Expansion valve 3 for refrigerant:
Subsystem 5 - Part No SW: 4M0 816 682 D HW: 4M0 816 682 D
Component: N638 EV3_KaMi H12 0102
Serial number: 00000000000120621371
1 Fault Found:
37030 - Local Databus
U1030 00 [00100111] - Electrical Malfunction
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 3
Fault Frequency: 1
Mileage: 116402 km
Date: 2025.01.22
Time: 01:57:51
As you can see from the scan there are several components that are missing, like sensors, ac comp and valves. I have read the wiring diagram and found out that all the missing components that doesnt show up on the auto scan is one the same LIN bus. This is the troubleshooting ive done so far:
- Calibrated HVAC
- Checked AC rele
- Checked all temp/press sensors in VCDS and they provide all info theyre supposed to do.
- Checked/measured the LIN wire between J1024 and AC compressor.
- Checked all grounding points.
- Checked 12V battery voltage (12.6V without being connected)
- Check all fuses.
- Checked AC refrigerant.
- Also checked all connectors related for corrosion.
Im about to buy new (used) Thermal management control module (J1024) and see if thats the problem.... And im wondering if the new old one needs to be coded in?
Any other suggestions for further troubleshooting?
