OBD Connector Pinout

[Yargon]

Hi all.

Could someone tell me the pinout of the OBD-II connector of my car?

It's a W209 and the pins used are: 1,3,4,5,7,8,9,11,12,15,16

I know what pins 2,4,5,6,7,10,14,15 and 16 are.

Pin 2 - J1850 Bus+
Pin 4 - Chassis Ground
Pin 5 - Signal Ground
Pin 6 - CAN High (J-2284)
Pin 7 - ISO 9141-2 K Line
Pin 10 - J1850 Bus
Pin 14 - CAN Low (J-2284)
Pin 15 - ISO 9141-2 L Line
Pin 16 - Battery Power

But, what are those 1,3,8,9,11 and 12 pins for?

 

[guydewdney]

try looking here:-
http://www.gendan.co.uk/diagnostic/connectors.shtml

 

[miro]

Hi all.

Could someone tell me the pinout of the OBD-II connector of my car?

It's a W209 and the pins used are: 1,3,4,5,7,8,9,11,12,15,16

I know what pins 2,4,5,6,7,10,14,15 and 16 are.

Pin 2 - J1850 Bus+
Pin 4 - Chassis Ground
Pin 5 - Signal Ground
Pin 6 - CAN High (J-2284)
Pin 7 - ISO 9141-2 K Line
Pin 10 - J1850 Bus
Pin 14 - CAN Low (J-2284)
Pin 15 - ISO 9141-2 L Line
Pin 16 - Battery Power

But, what are those 1,3,8,9,11 and 12 pins for?

http://www.obdii.com/connector.html

Pins can be allocated in the future.

 

[Yargon]

Tnx, but those pages are where I got my info from.

I've asked a friend and he gave me this list. I think it is based in ML model, but not sure.


Pin 1 ECU
Pin 2 -
Pin 3 TNA (engine rpm signal)
Pin 4 chassis ground
Pin 5 signal ground
Pin 6 CAN High (J2284)
Pin 7 ISO 9141-2 K line (ECU), engine load data, etc
Pin 8 ignition, circuit 15, fuse 22
Pin 9 ABS/ASR/EBP/ETS/BAS/ESP, electronic shift lever detector
Pin 10 -
Pin 11 transmission 722.6
Pin 12 AAM, EAM, transfer case
Pin 13 airbag, seatbelt, SRS, audio, nav, CDC, teleaid
Pin 14 CAN Low (J2284)
Pin 15 ISO 9142-2 L line, instrument cluster, headlamp range control, immobiliser
Pin 16 battery power, circuit 30, fuse 13