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16 pin J1962 OBD-2 car diagnostic connector layout
16 pin J1962 OBD-2 car diagnostic connector

 

Pin
Number
Pin
Name
Fiat car function
1   ABS, Brakes, K-Line
2 J1850  DW-FT-CAN
3 K-Line  Airbag
4 GND  Chassis ground
5 SGND  Signal Ground
6 HS-CAN ISO 15765 HS-CAN(+)
7 K-Line ISO 9141 K-Line (engine)
8   n/c
9   Body ECU , EPS
10  PWM DW-FT-CAN (-)
11   Anti-Theft system
12   engine compartment /Auxilliary Heater
13   Luggage compartment
14  HS-CAN(-)  ISO 15765 HS-CAN (-)
15 L-Line  n/c
16  Battery+ Battery +, unswitched

On some models (i.e. Ducato 250 ) only pins 1,4,5,6,9,12,14 & 16 are used.

OBD-2 compatibility list

Note that list is not 100% complete!

Model Engine Year (starting from) OBD-2 Protocol
Fiat 500 1.3 MJT, Diesel (75HP) 2007 CAN 29bit
mjt, Diesel (75HP) 2007 CAN 29bit
1.4, Gasoline (100HP) 2008 CAN 29bit
1,2l), Gasoline (69 HP) 2009 CAN 
twinair, Gasoline (85HP) 2011 CAN 29bit
Fiat Albea 1.2, Gasoline (80HP) 2005 KWP FAST
Fiat Bravo Diesel (100 HP) 1998  
182 1.9 JTD , Diesel (104 HP) 1999 ISO 14230-4 
Diesel (84 HP) 2001  
182 1.6 16V, Gasoline (100 HP) 1995  
Gasoline (102 HP) 1998 ISO 14230-4 
1.9 JTD 105, Diesel (104 HP) 1998 ISO 14230-4 
Gasoline (81 HP) 1999 ISO 14230-4 
1.2, Gasoline (81 HP) 1999 ISO 14230-4 
Gasoline (81 HP) 2000 ISO 14230-4 
JTD 105 GT, Diesel (104 HP) 2000 ISO 14230-4 
1.9 jtd, Diesel (100HP) 2000 ISO 9141
1.2 12V, Diesel (82HP) 2001 KWP FAST
1.9 JTD, Diesel (105HP) 2001 ISO 9141
1.9 MJT, Diesel (120HP) 2007 KWP FAST
1.9 Jtd, Diesel (150HP) 2007 KWP FAST
1.6 multijet, Diesel (90HP) 2008 KWP FAST
Fiat Cinquecento 0,9, Gasoline (39 HP) 1993  
Gasoline (54 HP) 1995  
1.1, Gasoline (54 HP) 1998  
Fiat Croma 2.4 MJT, Diesel (200HP) 2005 KWP FAST
1.9 Mjt, Diesel (202 HP) 2006  
Fiat Croma 2 1.9 MJT, Diesel (120HP) 2005 KWP FAST
1.9 Jtd, Diesel (150HP) 2005 KWP FAST
Fiat Doblo 1.2, Gasoline (65HP) 2001 KWP FAST
1.9 D, Diesel (60HP) 2003 KWP SLOW
1.9 jtd, Diesel (90HP) 2003 ISO 9141
1.9 JTD, Diesel (100HP) 2003 ISO 9141
1.3 jtd, Diesel (105HP) 2003 ISO 9141
1.9 D, Diesel (81 HP) 2004  
1.9 JTD, Diesel (105HP) 2004 KWP FAST
1.3jtd, Diesel (81 HP) 2005  
1.3 jtd, Diesel (70HP) 2005 KWP FAST
1.3 jtd, Diesel (75HP) 2005 KWP FAST
1,9 Multijet, Diesel (104 HP) 2006 ISO 14230-4 
1.9, Diesel (90HP) 2009 KWP FAST
1.6 jtd, Diesel (105HP) 2010 CAN 29bit
Fiat Ducato Diesel (127 HP) 2004 ISO 9141-2 
Diesel (156 HP) 2007 ISO 14230-4 
2.0 Jtd, Diesel (100HP) 2007 KWP FAST
2.3 MJT, Diesel (130HP) 2007 KWP FAST
2.3 multijet, Diesel (120HP) 2008 KWP FAST
Diesel (109 HP) 2006  
2,0 JTD +Chiptuning 110PS, Diesel (108 HP) 2006 ISO 14230-4, ISO 9141-2
2,3 Multijet, Diesel (129 HP) 2008  
Fiat Fiorino MJTD 1300, Diesel (75HP) 2008 CAN 29bit
Fiat Grande Punto 1.9 JTD Sport, Diesel (129 HP) 1997 CAN 
Gasoline (74 HP) 2006  
1.3 mjt, Diesel (75HP) 2006 CAN 29bit
1.4, Gasoline (77HP) 2006 CAN 29bit
1.9 MJT, Diesel (120HP) 2006 CAN 29bit
1.9 MJT, Diesel (130HP) 2006 CAN 29bit
1,4 16V, Gasoline (94 HP) 2007 CAN 
1.3 Mjt 16V, Diesel (90HP) 2007 CAN 29bit
Gasoline (69 HP) 2008  
T-Jet, Diesel (119 HP) 2009  
1.2, Gasoline (65HP) 2009 ISO_CAN_29BIT_500K
1,3 MJet, Diesel (89 HP) 2005 CAN 
Fiat Idea 1.3 16V JTD, Diesel (69 HP) 2004 ISO 14230-4, ISO 9141-2
1.3 JTD, Diesel (70HP) 2004 KWP FAST
1.9 JTD, Diesel (100HP) 2004 ISO 9141
Fiat Marea Diesel (104 HP) 1999 ISO 14230-4, ISO 9141-2
2.4JTD, Diesel (175 HP) 1999  
Gasoline (208 HP) 2000  
1.9 Jtd, Diesel (105HP) 2000 KWP FAST
Gasoline (102 HP) 2001 ISO 14230-4 
2.0 20v, Gasoline (155HP) 2001 KWP FAST
Fiat marea wekend Gasoline (113 HP) 1998  
Fiat Mondeo Gasoline (114 HP) 1998 PWM J1850 
Fiat Multipla Gasoline (102 HP) 1999 KW 2000 VAG 
1.3 jtd, Diesel (105HP) 1999 ISO 9141
1.6 16V, Gasoline (103HP) 2000 KWP FAST
1.9 Jtd, Diesel (110HP) 2001 ISO 9141
Gasoline (102 HP) 2003 ISO 14230-4 
Gasoline (102 HP) 2003 ISO 14230-4 
1.9 Jtd, Diesel (115HP) 2004 ISO 9141
1.9 Jtd, Diesel (120HP) 2005 KWP FAST
Gasoline (102 HP) 2006 ISO 14230-4 
Gasoline (102 HP) 2006 ISO 14230-4 
Fiat Multipla Bipower 1.6l, Gasoline (102 HP) 2000  
Fiat Palio 1.3, Gasoline (60HP) 2003 KWP FAST
Fiat Panda 1,2, Gasoline (60 HP) 2003 ISO 14230-4 
1.2, Gasoline (60HP) 2004 KWP FAST
1.2, Gasoline (64HP) 2005 KWP FAST
1.3, Diesel (70HP) 2005 KWP FAST
1.1, Gasoline (54HP) 2007 KWP FAST
1.2, Gasoline (69HP) 2008 KWP FAST
1.3 multijet, Diesel (75HP) 2008 KWP FAST
Fiat Panda Van 1.1 MPI, Gasoline (54 HP) 2002  
Fiat Punto 1.9 D, Diesel (60HP) 1999 KWP SLOW
  2000 ISO 14230-4, ISO 9141-2
Gasoline (60 HP) 2000 ISO 14230-4, ISO 9141-2
Gasoline (54 HP) 2000 ISO 9141-2 
1,2, Gasoline (60 HP) 2000  
1.2i, Gasoline (60HP) 2000 KWP SLOW
1.2 16v, Gasoline (80HP) 2000 KWP FAST
1.9 Jtd, Diesel (80HP) 2000 ISO 9141
1.9 jtd, Diesel (85HP) 2000 ISO 9141
1.2, Gasoline (60 HP) 2001 ISO 14230-4, ISO 9141-2
1.2 16V, Gasoline (80 HP) 2001 ISO 14230-4 
1.2 8v, Gasoline (60HP) 2001 KWP FAST
  2002 ISO 14230-4, ISO 9141-2
1,2 16V, Gasoline (80 HP) 2002 ISO 14230-4 
1.6, Gasoline (70HP) 2002 KWP SLOW
Gasoline (60 HP) 2003 ISO 14230-4 
Gasoline (60 HP) 2003 ISO 14230-4 
Gasoline (60 HP) 2003 ISO 14230-4 
Gasoline (60 HP) 2003  
Gasoline (60 HP) 2003 ISO 14230-4  
Gasoline (60 HP) 2003 ISO 14230-4 
Gasoline (60 HP) 2003 ISO 14230-4 
Gasoline (60 HP) 2003 -
Diesel (85 HP) 2003  
1.3 JTD, Diesel (69 HP) 2003  
1.4 16v, Gasoline (85HP) 2003 KWP FAST
1.4, Gasoline (80HP) 2004 KWP FAST
1.4, Gasoline (60HP) 2006 CAN 29bit
1.3, Diesel (90HP) 2007 CAN 29bit
1.3 multijet, Diesel (75HP) 2010 CAN 29bit
1.4 multiair, Gasoline (105HP) 2010 CAN 29bit
Fiat Punto 188 Gasoline (60 HP) 2001 ISO 14230-4 
1.9 JTD, Diesel (85 HP) 2002  
FL'03 1.3 JTD Multijet, Diesel (69 HP) 2004 CAN 
1.2L 8V, Gasoline (60 HP) 2003  
Fiat punto gt Diesel (135 HP) 1994  
Fiat Qubo 1.3 multijet, Diesel (75HP) 2010 CAN 29bit
Fiat Scudo 2.0 JTD, Diesel (88 HP) 2000 ISO 14230-4 
2.0 JTD, Diesel (93 HP) 2000 ISO 14230-4 
2.0 HDi, Diesel (110HP) 2000 KWP FAST
Diesel (108 HP) 2001  
2.0 JTD, Diesel (94HP) 2001 KWP SLOW
1.9D, Diesel (70HP) 2003 KWP SLOW
1.6 Jtd, Diesel (90HP) 2007 CAN 11bit (500kb)
2.0 mjt, Diesel (120HP) 2009 CAN 11bit (500kb)
Fiat Sedici 1.9 Multijet, Diesel (120HP) 2007 KWP FAST
Fiat Seicento Gasoline (54 HP) 2001  
1.3, Gasoline (70HP) 2001 KWP FAST
1.1, Gasoline (54 HP) 2003  
1.1, Gasoline (54HP) 2003 KWP FAST
Fiat Stilo Diesel (114 HP) 2001 ISO 14230-4 
Gasoline (102 HP) 2001 ISO 14230-4 
  2002 ISO 14230-4, ISO 9141-2
Diesel (114 HP) 2002  
1,2 16V, Gasoline (80 HP) 2002 ISO 14230-4 
1.6, Gasoline (103HP) 2002 KWP FAST
1.9 Jtd, Diesel (115HP) 2002 ISO 9141
2.4, Gasoline (170HP) 2002 KWP FAST
Gasoline (102 HP) 2003  
Diesel (114 HP) 2003 ISO 14230-4 
1.9 MJtd, Diesel (120HP) 2003 KWP FAST
1,6 16V, Gasoline (102 HP) 2004 ISO 14230-4 
1,9JTD Multijet, Diesel (139 HP) 2004  
1.9 Jtd 16V, Diesel (126HP) 2004 ISO 9141
1.9 Jtd, Diesel (115HP) 2005 KWP FAST
Diesel (119 HP) 2006  
Diesel (148 HP) 2006  
Fiat Stilo Multiwagon 1.9 JTD Multijet, Diesel (119 HP) 2006 ISO 14230-4, ISO 9141-2
Diesel (119 HP) 2006  
Diesel (80 HP) 2003  
Gasoline (141 HP) 2006  
Fiat Ulysse Diesel (89 HP) 1998  
Diesel (108 HP) 2000 ISO 14230-4 
Gasoline (135 HP) 2000  
2.0 Jtd, Diesel (105HP) 2000 KWP SLOW
2.0 jtd, Diesel (110HP) 2001 KWP SLOW
2.2 HDi, Diesel (136HP) 2004 KWP FAST
2.2 Jtd, Diesel (128HP) 2006 KWP FAST
2.0 Jtd, Diesel (107HP) 2007 CAN 11bit (500kb)

 

Here are some schemes of OBD-II diagnostic cables

 

According to 2 reports in our database (1 positive and 0 negative) the Fiat OBD II diagnostic interface pinout should be correct.

Is this pinout
Fiat OBD II diagnostic interface visual pinout:click to enlarge
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