Thread: Reading Codes
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Old 08-08-2003, 12:46 PM
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JimF JimF is offline
'94 S500: only 793 sold!
  
Join Date: Mar 2001
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To measure Lamdba using a . . .
multimeter (MM), connect the MM 'minus' (blk) lead to ground and the 'plus' (red) to pin #3 (O2 sensor) for the X11 connector.

For the X11/4 connector, pin 14 to MM 'plus' and pin 1 to MM 'minus'.

The other pins are there for the Mercedes HHT or the M0039 which needs 12V and Ground to power it.
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