CN2 is the connector to the serial port on an OBD1 ECU.
Here's the pinout of the Dataconnector IN a Honda ECU:
- 1: GND
- 2: RX (send Data from the PC to the ECU)
- 3: +5 Volt
- 4: TX (send Data from ECU to the PC)
- 5: N.C. (not connected)
This port is half-duplex (RX and TX are connected) in stock form. See OBD1 J12 for more information about full-duplex modification.
A good pin header for CN2 is digikey part# 640456-4
Question From Web Geek_ "There are 3 search results for that part #, which is the right one?"
For more information see this excellent post by Jim Truett: http://forum.pgmfi.org/viewtopic.php?t=1663
Attachment?: | Modify: | Size: | Date: | Who: | Comment: |
CN2_location.jpg | mod | 13759 | 14 Apr 2004 - 00:19 | tungsten2k | OBD1 CN2 Location |
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