Hardware pinouts information and cables schemes

OBD-2 ISO 9141-2 (14230-4, KWP2000) simple RS-232 cable schematic specification users reports and reviews

[Discuss at the forum] [SUBMIT new pinout]

There are 8 approved reports in our database

Date Content
Revision
User opinion Comment Approved by moderator?
INCORRECTfrom collector of t1, r4 has to go to GND.APPROVED
INCORRECTthere is no data control that is when sending from vehicle it still flows back to yhe computer . an aditinal transitor connected to the rts pin to control the data flow.APPROVED
CORRECTin may car (Golf 4 1.9TDI) works fine!!!APPROVED
2008-11-08 17:12:12rev. 3CORRECTThe 1st report says that from collector of t1, r4 has to go to GND. R4 to TX line seems to me to be also correct. The TX line provides a source of low voltage when needed (when high, RX must be also high). Furthermore, as RS232 wants negative voltage rather than zero for low level, it may be better.APPROVED
2011-10-16 03:34:27rev. 5CORRECTthat is correctAPPROVED
2014-03-12 22:40:48rev. 6CORRECTWhich is the best software for dealing with it? Thank YouAPPROVED
2016-06-28 05:37:12rev. 6CORRECTAPPROVED
2017-10-21 13:51:18rev. 6CORRECTSchematics have no errors.APPROVED


History of users contributions

Date Content
Revision
Author Comment
2008-07-28 16:39:59rev. 2Steve Gray
2008-09-25 21:57:22rev. 3AndreTOP
2009-08-15 14:52:45rev. 3
2010-05-18 20:19:09rev. 5
2014-04-20 23:57:48rev. 6
2014-04-20 23:57:57rev. 6
2014-04-20 23:58:08rev. 6
2014-04-20 23:58:17rev. 6
2014-04-20 23:58:27rev. 6

Back to OBD-2 ISO 9141-2 (14230-4, KWP2000) simple RS-232 cable schematic pinout


Pinouts.ru > Pinout of OBD-2 ISO 9141-2 (14230-4, KWP2000) simple RS-232 cable schematic and layout of 9 pin D-SUB female connector and 16 pin car OBD2 special connector
should be correct