95 E320 Code 11, N4/1 module question.
09-12-2005, 01:02 AM
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95 E320 Code 11, N4/1 module question.
I apologize in advance for the length. You may want to take a bathroom break or whatever before trying to decifer this story!!! Just trying to relieve as much guess work as possible.
The Vehicle,
1995 Mercedes Benz E320 Cabriolet
Model: 124.066
Engine: 104.992
Options:
Automatic transmission
ASR
CD changer
Mileage: 96000
Changes to vehicle:
Wiring Harness
EA/CC/ISC Actuator(M16/1)
Spark plugs......I figure about $250-$300 a hole so far!
(I should have never changed those darn spark plugs)
EGR cleanup routine with instructions found on forum.
Reference info:
Online Forums
AllData
Model 124 Service Manual CD Library
Problems:
ASR light on
Operating in Limp-Home mode
Transmission does not shift unless I let up on accelerator
Codes pulled with Impulse Counter Scan Tool(Awesome tool built from plans found on forum
),
Codes 11 and 14 from the EA/CC/ISC Control Module(Socket 14)
Code 8 from the HFM-SFI Engine Control Module(Socket 8)
Code 6 from the Diagnostic Module(Socket 3)
I ***ume this code is based on the other codes.
The CTP switch, fuel shutoff and brake switch passed the tests.
I checked for air leaks and do not believe there are any. I did replace all the rubber air fittings(I hope!) just in case. I did not replace any plastic lines. I then used a stethescope to try and listen for air leaks. I am not really sure what I was listening for but I touched it to as many lines and connectors as I could get to. I ***umed that if there was a leak it would be noticable through that thing. Kinda fun though :p
The EA does not feel like it is binding. When I turn on the ignition(not starting the vehicle) I hear the EA move and then it snaps back. It is not a smooth return and I can't recall if that is normal. I performed the throttle linkage adjustment. I have about 1/8" of play at the follower spring and the tips lined up on bowden cable. I checked for obstruction around the accelerator pedal and WOT switch. Also vaccumed to make sure. I believe it is setup correctly but the snap from the EA makes me wonder.
The only test step from Alldata I cannot remedy is for the code 11, socket 14, test 19 which is the closed throttle recognition signal to engine control module(N3/4). With the ignition ON the nominal values listed are <=4.8V - closed throttle position and >=5.5v - depress accelerator pedal. My results are 7.87 closed and 7.08 depressed. I am thinking that once I solve this I may be a winner. for now.
Does anyone know where I can get a schematic of the EA/CC/ISC control module(N4/1)? There are alot of numbers on the module...
VDO
412.228/001/032
124 545 6532 E-GAS
29.11.94 0018 HEI.S88
*EC69940I04881* 101 032
Better yet would be advice on how I can repair the unit. I understand there are serious liabilites in handing out that kind of information but I would love to get an anonymous email or find writing on a wall or or or.....to figure this thing out!!
Sorry about the long wind. If you made it this far, thanks for the time!
Take Care
Tom
The Vehicle,
1995 Mercedes Benz E320 Cabriolet
Model: 124.066
Engine: 104.992
Options:
Automatic transmission
ASR
CD changer
Mileage: 96000
Changes to vehicle:
Wiring Harness
EA/CC/ISC Actuator(M16/1)
Spark plugs......I figure about $250-$300 a hole so far!
(I should have never changed those darn spark plugs)
EGR cleanup routine with instructions found on forum.
Reference info:
Online Forums
AllData
Model 124 Service Manual CD Library
Problems:
ASR light on
Operating in Limp-Home mode
Transmission does not shift unless I let up on accelerator
Codes pulled with Impulse Counter Scan Tool(Awesome tool built from plans found on forum
),Codes 11 and 14 from the EA/CC/ISC Control Module(Socket 14)
Code 8 from the HFM-SFI Engine Control Module(Socket 8)
Code 6 from the Diagnostic Module(Socket 3)
I ***ume this code is based on the other codes.
The CTP switch, fuel shutoff and brake switch passed the tests.
I checked for air leaks and do not believe there are any. I did replace all the rubber air fittings(I hope!) just in case. I did not replace any plastic lines. I then used a stethescope to try and listen for air leaks. I am not really sure what I was listening for but I touched it to as many lines and connectors as I could get to. I ***umed that if there was a leak it would be noticable through that thing. Kinda fun though :p
The EA does not feel like it is binding. When I turn on the ignition(not starting the vehicle) I hear the EA move and then it snaps back. It is not a smooth return and I can't recall if that is normal. I performed the throttle linkage adjustment. I have about 1/8" of play at the follower spring and the tips lined up on bowden cable. I checked for obstruction around the accelerator pedal and WOT switch. Also vaccumed to make sure. I believe it is setup correctly but the snap from the EA makes me wonder.
The only test step from Alldata I cannot remedy is for the code 11, socket 14, test 19 which is the closed throttle recognition signal to engine control module(N3/4). With the ignition ON the nominal values listed are <=4.8V - closed throttle position and >=5.5v - depress accelerator pedal. My results are 7.87 closed and 7.08 depressed. I am thinking that once I solve this I may be a winner. for now.
Does anyone know where I can get a schematic of the EA/CC/ISC control module(N4/1)? There are alot of numbers on the module...
VDO
412.228/001/032
124 545 6532 E-GAS
29.11.94 0018 HEI.S88
*EC69940I04881* 101 032
Better yet would be advice on how I can repair the unit. I understand there are serious liabilites in handing out that kind of information but I would love to get an anonymous email or find writing on a wall or or or.....to figure this thing out!!
Sorry about the long wind. If you made it this far, thanks for the time!
Take Care
Tom
