Notes on Toyota DLC1 Serial Data

17/08/15
> Data Can not received via RS232 terminal.
> May be because data cable not use Rx Tx Pin.
> Pin used is DSR (Data Set Ready) Pin and Signal Ground Pin

Toyota DLC1 & DLC2 Datalogger

Recently, I made datalogger cable to connect Toyota ECU with DLC1 or DLC2 to computer via serial port.

Scheme:
ECU –> DLC1 –> Serial Port –> USB to Serial Cable –> Computer –> Datalogger Software

What is DLC1?
DLC1 (Data Link Connector 1) is the type of terminal which is used in early Toyota Car. DLC1 Year range: 1990-2000. DLC2 Year Range: 1988-1996.

Electrical Schematic:

Datalogger Software:
CarTester8000 which is made and maintained by Russian Toyota Carina Forum.
Download Link: http://primavistalab.com/files/CarTester8000StableEdition_English.zip

Tested On:
1. Toyota Corolla AE111 1996 with 4AFE Engine
2. Win7 64-bit with BAFO USBtoSerial DB9

Result:
It works!

Other Sources:
http://www.clublexus.com/forums/performance-and-maintenance/664196-free-toyota-pre-obd-datalogger-found.html
http://toyota.kgbconsulting.ca/wiki/OBD-1_Serial_Interface