Bob:

Yes, those are the wires I replaced. Three pin connector just above the brake booster. One lead goes to oil level sender in oil pan, one lead goes to starter, and last lead goes on back of engine top left side of transmission. I'm not sure what the last lead is for, color on wire is brown/green. I know there is a crankshaft position sensor down there somewhere....could this be it? (I looked at schematics for a while trying to find brown/green wire. I was hoping it would be something related to idle speed/cruise control.....)

J. M. van Swaay

<<The remedy is to erase the code, then reset by ign off then on for 90 seconds prior to start. I did have a code 3 once or twice during this whole process>>

The reset for adaptation mean is to erase codes until the module shows a code ! [ single flash], then hold the button for 6-8 secs, . then the key On sequence. This clears the memory back to mean after codes have been cleared.
If this is done, you do not have to wait for the ECU to relearn using drive cycles .. the poblem using drive cycles is if the adaptation was way out to begin with, then codes can still pop up during the drive cycle relearning process.
So, it is best to do manually, specially after the code fault remedy has beeen found

Pictures of the connector/replaced wires.....

JM van Swaay

Looks just like mine.

Bob

Update: the rest of the story.....

Problem is back, below is description of problem.

Installed rebuilt unit in a 1995 E320 Sedan.
Initially the unit operated correctly, 2 days later, operation became
intermittent. Symptoms are intermittent high idle speed (1400 RPM in park,
1000 RPM in gear) and inoperative cruise control. (either both symptoms are
present, or neither are present. never one without the other) Shutting off
the car and restarting will sometimes cure both problems, but they both
reoccur. Retrieval of stored fault codes (via impulse code reader, not HHT)
consistently yields the following:

Diagnostic module: code 6: Idle speed control inoperative

ECU module: code 8: Idle speed control (ISC) system at upper or lower
control stop

HFM SFI module: code 2: EA/CC/ISC control module (N4/1) or Safety contact
switch (M16/1s1) or Stop lamp
switch or Cruise control switch or Actual value potentiometer or Starter
lock-out/back-up
lamp switch or engine speed signal or vehicle speed signal or closed
throttle position
switch or safety relay in EA/CC/ISC control module

Out of desperation, I replaced the remanufactured unit with a known working
unit pulled from an identical fully functional vehicle. Idle speed/cruise
control now work properly. So far, there is no indication of intermittent
failure.

Returned unit to Beckmann for testing, they confirmed reman unit was defective. (the drive motor was bad)

Hope this story helps someone else........................

Before reading your 'conclusion', while reading the post, I came to the conclusion that the ETA was bad. So I guess it was.

That's a bit troubling since it's supposed to be good . . . hope Beckmann improves its final testing methods to ensure that doesn't happen again!

You have been busy! Tnx for posting your added steps.

My diagnosis was also a bad throttle actuator but I refused to believe it because it was supposed to be a fully tested reman unit. In all fairness to Beckmann, this unit probably did test OK prior to them sending it to me. Intermittent problems are always troublesome. By the way, the motor is the only part of the throttle actuator that can't be rebuilt. It is pressed in and replacement is not possible.

. . . don't forget the "Ref Pot"!

I'm not 100% sure but I think Beckmann can recondition the potentiometers. They have some kind of proprietary process were they reapply resistive material.

If you read Menu#24, specifically in the section entitled: "Update; July 14, 2005", it's fully explained.

Basically, it the Ref Pot is 'toast', then the unit is scrapped. If it's ok (or at least salvagable), it can be 'sputtered' (micro-electronic thick film term) and be re-used.