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Old 07-08-2003, 08:47 PM
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jcwells jcwells is offline
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Join Date: Oct 2002
Location: Toronto, Ontario
Posts: 91
Thanks Arthur for the next step.

Plugged the throttle actuator back in just in case its absence might screw up the readings.

Using the hand built led tester I got error codes 2 and 11 from pin 14 EA module.

From the code book:

Error 2 is - Closed throttle recognition signal to engine control module (HFM-SFI or Left LH-SFI)
Fuel safety shut-off to engine control module (HFM-SFI or left or right LH-SFI)

Error 11 is - 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

This vehicle has 160,000 KM, the neutral safety switch, ignition switch and some fuses were replaced recently to fix a no start problem. Further, in addition to the CEL being on, I do have a stop lamp indicator on, even though I believe all stop lamps are fine. This car still has the original harness.

The question is: is it the actuator or the control module? Remember the actuator is making grinding/squeaking noises when the ignition is on or the car is driving. I was thinking of opening up the actuator just to id the sound source and check for shorts.

Mercedes Canada quoted $1777.00 CDN for the actuator. Checking one other source.

Thanks again for any help,

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