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W123 diagnostic port?
I've noticed that there is a round diagnostic port under the hood with a cover that screws on/off. Can this be used to test certain systems in my 280ce and if so does anyone know how. I've always wondered what that plug was for.
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It's known as the x11 port.
I know pin 3 will allow you to use either a duty meter or oscilloscope (depending on fuel system) to measure the air / fuel ratio. The fsm will detail more of its uses. |
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