[tinghei]

Hi All,

I recently upgraded my stage 1 to JB4 but when I plugged in the JB4 I kept getting a Drivetrain Malfunction error but I don't see any active error code thru OBD..... email Jon from Burgertuning.... he said it should be just plug and play.... He said I have to get the USB cable first to see what's going on......

Any of you experienced this before????

[Chris@codemybimmer]

Originally Posted by tinghei

Hi All,

I recently upgraded my stage 1 to JB4 but when I plugged in the JB4 I kept getting a Drivetrain Malfunction error but I don't see any active error code thru OBD..... email Jon from Burgertuning.... he said it should be just plug and play.... He said I have to get the USB cable first to see what's going on......

Any of you experienced this before????

i got drive train malfunction when i went from stage 1 to JB4 as well.

turned out when i installed it i accidentally swapped the CAN wire connection.

[tinghei]

Originally Posted by 1lyfe

i got drive train malfunction when i went from stage 1 to JB4 as well.

turned out when i installed it i accidentally swapped the CAN wire connection.

Can you show me a picture if possible?

[Chris@codemybimmer]

Originally Posted by tinghei

Can you show me a picture if possible?

Took this form BMS install guide.

i accidentally swapped these two and got that problem.

also make sure your MAF sensor is unplugged, you dont need it for the stage 2

[tinghei]

THanks..... Got it figured it out..... The dealer mechanic had mess with the wiring before and they had reversed the wastegate connector.....