MK4 DBW throttle body - which wire does what?

NO, but what's your problem? So what year of golf/jetta you own? I dislike owners referring to their cars as MK4 which means very little to me... so what's wrong with just stating what year and model car you drive?

Sorry. I thought MK4 + DBW would cover any DBW throttle bodies found on all MK4's that have DBW throttle bodies.

Specific vehicle = 2002 Jetta 2.0L (not 2002.5)

Rey

If I state a 2002 jetta 2.0L and someone has done testing, but on a 2003 GTI 1.8T, there's a chance they may not reply b/c it doesn't match. I was trying to be as general as possible.

Rey

In that situation, your best bet to get the most responses possible, would be to say:

"I have a 2002 jetta 2.0L that has DBW throttle body, anyone else with a same gen 2.0L that has DBW know this info?"

Although all 2001 & up 2.0 have DBW there is some difference in checking the system out. Basically I do a ohm check of the wiring from the ECU to the throttle housing. If ok then a voltage check is done to see if the throttle housing is getting the correct voltage to operate. Another check is doing a pin check of the throttle housing for correct resistance. I can tell you there are very few failures of the system and it's even designed with a backup redundant system so if 1/2 dies you will never know it. They are labeled as "bank 1" & "bank 2" of the system. Is that what you wanted to know? and... what's your issue?