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16 pin J1962 OBD-2 car proprietary connector layout
16 pin J1962 OBD-2 car proprietary connector
at the Renault car
1997 and later

 

Pin Signal Description
2 J1850 Bus+  
4 CGND Chassis ground
5 SGND Signal ground
6 CAN High J-2284
7 K-LINE (ISO 9141-2 and ISO/DIS 14230-4)
10 J1850 Bus-  
12 LS CAN Bus used for low speed CAN bus, also called as multimedia CAN bus
13 LS CAN Bus used for low speed CAN bus, also called as multimedia CAN bus
14 CAN Low J-2284
15 ISO 9141-2 L-LINE (ISO 9141-2 and ISO/DIS 14230-4)
16 +12v Battery power
 

Pins 12, 13 used for low speed CAN bus, also called as multimedia CAN bus, in some new cars, as Megane 3, Fluence and other... this bus also important for diagnostic.  
 

 

Some OBD-II cables schemes:

OBD-2 ISO 9141-2 (14230-4, KWP2000) simple serial cable
OBD-2 J1850 PWM, J1850 VPW serial ELM327 cable
OBD-2 universal ISO 15765-4 CAN, SAE J1850 PWM, SAE J1850 VPW, ISO 9141-2, ISO 14230-4 and SAE J1939 diagnostic cable

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