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16 pin Mercedes diagnostic connector layout
16 pin Mercedes diagnostic connector
used in some models of 1993-1998's ( MB C (W202), E (W124))

Description (may be empty)
1 GND  Ground
2    Self-diagnostic button (if present)
3 K-Line  benzine engine diagnostic (CFI, KE) and DM
4 K-Line  diesel engine diagnostic (EDS, ARA) or self-diagnostic LED (if present)
5 K-Line  ASD, 4MATIC diagnostic
6 K-Line  safety devices: Airbag, SRS, AB diagnostic. Service interval reset.
7 K-Line  air-conditioner and heater (Tempmatic, Automatic) diagnostic
8 K-Line  benzine engine diagnostic (HFM-SFI, DI)
 9  K-Line  ADS diagnostic
 10    Engine speed sense (gasoline engine). K-Line for RST (R129), CST (W124)
11   K-Line  Anti-thieft (ATA) diagnostic
 12  K-Line  IRCL diagnostic
 13  K-Line  Transmission Control Unit diagnostic (EGS, EATC)
 14  K-Line Engine (ESCM, MAS) diagnostic, ISC, EA, EFP diagnostic, cruise-control (CC) diagnostic
 16  +12v  Power
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Mercedes old 16 pin diagnostic connector visual pinout:click to enlarge
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