current consumption issues Golf IV

Irbiss · Post 16 Apr 2023, 17:37

Hey,

since last 2 two days my current consumption display isnt real to the driving situation in my Golf IV.
its shows some times 0,0 if i acclarate, next more then normal and somtimes the correct data.
There no issues in cluster, car is normal working.
The average consumption, oil & water tem. also correkt.
Maybe some can bus Problems?
How can i check this?

Reegads

Holger

DRIVE2 · Post 17 Apr 2023, 05:37

You can see CAN bus problems on the CAN Status screen in the hidden menu.
Do you have fuel consumption readings on the diagnostics? Can you compare data?
What firmware version is installed?

Irbiss · Post 11 May 2023, 22:52

So, 1 day after my post, everything is running well.
Today same problems for 10 minutes while driving, after this time, everything ok.
Newest firmware istalled.
In diagnostic, correct data are displayed.
All other datas, including average consumption, are correkt.
This cant be a cable connection problem, or?

DRIVE2 · Post 12 May 2023, 11:36

Please see motor CAN information on the CAN Status screen (hidden menu).
During normal operation and after a problem occurs.

Irbiss · Post 12 May 2023, 19:13

I checked oder firmware, same problem.

You mean this Can- Status- Screen?

DRIVE2 · Post 12 May 2023, 22:59

Yes, this screen.
Too many errors on Motor-CAN. ColorMFA may interrupt data reception for a short time if there are many errors on the CAN-bus.
Make sure the wires are well connected. That they are twisted into a twisted pair.
Are there any non-original devices on the motor CAN bus ?
Are there any errors in the ECUs on this bus (motor, gearbox, abs/esp unit, dashboard, e.t.c.) ?
Have there been any problems with the abs/esp unit recently ?

Irbiss · Post 13 May 2023, 07:09

Where are die motor- can errors displayed, in section "Ewarn"?
There are no errors in Log.
Motor Can, just connected with original devices.
No Problems with ESP.
Color MFA works fine since more then 6 years.

Here Can Status with everything is running:

I will check the cabel connection...

Irbiss · Post 13 May 2023, 10:52

While my cabel check in the cluster, indeed, there was a cabel from the motor Can pin looks like a bit bruised.
After correction, the can screen (engine is running) looks so:

Everething is working fine, i hope we have find out the problem.
Thx for help.

DRIVE2 · Post 13 May 2023, 11:21

Where are die motor- can errors displayed, in section "Ewarn"?

In good condition, all data on the columns of the CAN bus should be equal to zero. Always.
It is possible that when the ignition is turned on, some parameters will increase. This may be due to different initialization times in different ECUs. But it is unacceptable to change the values when the ignition is already on. If the values increase, then there are connection problems or problems in the operation of some ECUs.

Everething is working fine, i hope we have find out the problem.

Fine. The data really looks better.