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#1
07-30-2004, 12:07 AM
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On-off 70 % ratio Readout !
This is what I get when I check for duty cycle at pin 3 of the X11 connector with the engine running. It's a 93 190E 2.6L engine. Definition to this code is: (Implausable TNA-signal (rpm signal) at CIS-E control unit (N3).
Would anyone explain what this mean and how would it effect the drivibality of the car? What should I do? Thanks, Meza 
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Meza 1993 190E 2.6 Advanced Diesel Systems Test and Research Engineer Last edited by Meza; 07-30-2004 at 12:15 AM. 
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#2
07-30-2004, 12:24 AM
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#3
08-01-2004, 09:01 PM
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Problem solved..
The coolant temperature sensor was disconnected from an earlier work on the car. Once connected, the duty cycle was fluctuating around 50% like it supposed to. Thanks for all the help.
Meza
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Meza 1993 190E 2.6 Advanced Diesel Systems Test and Research Engineer
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