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OBD-2 ISO 9141-2 (14230-4, KWP2000) simple RS-232 cable schematic specification users reports and reviews |
| Date | User opinion | Comment | Content Revision |
Approved by moderator? |
|---|---|---|---|---|
| INCORRECT | from collector of t1, r4 has to go to GND. | APPROVED | ||
| INCORRECT | there 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 | ||
| CORRECT | in may car (Golf 4 1.9TDI) works fine!!! | APPROVED | ||
| 2008-11-08 17:12:12 | CORRECT | The 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. | rev. 3 | APPROVED |
| 2011-10-16 03:34:27 | CORRECT | that is correct | rev. 5 | APPROVED |
| Date | Author | Content Revision |
Comment |
|---|---|---|---|
| 2008-07-28 16:39:59 | Steve Gray | rev. 2 | |
| 2008-09-25 21:57:22 | Andre | rev. 3 | TOP |
| 2009-08-15 14:52:45 | rev. 3 | ||
| 2010-05-18 20:19:09 | rev. 5 |
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 |