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  #1  
Old 06-21-2010, 05:01 PM
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1985 M117 Jetronic wiring schematic

Does anyone have a schematic for the pin-outs on the Jetronic control computer mounted inside the cab on a 1985 500SEL?

I'm looking for the O2 sensor wire pin.

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Old 06-22-2010, 02:41 AM
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Never mind. Using my trusty multimeter I discovered either the O2 sensor doesn't run to either of the computers or the O2 wire I have is faulty.
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Old 06-22-2010, 08:23 AM
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The O2 sensor wires run to pins # 2 & 3 of the control unit.
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  #4  
Old 06-22-2010, 08:57 AM
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Thank you. That explains why pins 2 & 3 are jumpered at the connector.

I guess I'll recheck them with the multimeter.

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